PB1317 Peterbilt 379 CHASSIS Supplemental Manuals Conventional Trucks Operator's Manual Prior To 12 06

User Manual: Peterbilt 379 CHASSIS

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OPERATOR’S
MANUAL
California
Proposition 65 Warning
•Diesel engine exhaust and some of its constituents are
known to the State of California to cause cancer, birth
defects, and other reproductive harm.
•Other chemicals in this vehicle are also known to the
State of California to cause cancer, birth defects or
other reproductive harm.
•Battery posts, terminals, and related accessories con-
tain lead and lead compounds, chemicals known to the
State of California to cause cancer and reproductive
harm. Wash hands after handling.
Quick Table of Contents
•Introduction ............................................ 1
•Cab And Frame Access ............................ 5
•Getting To Your Engine................................. 9
•Controls And Displays ................................... 16
•Seat And Restraint Systems............................. 63
•Driver’s Checklists................................................ 76
•Starting And Operating The Vehicle........................ 80
•Maintenance and Service......................................... 112
•Vehicle Identification .................................................... 184
•Consumer Information .................................................... 185
•Subject Index ............................................................ 187
PART 1: INTRODUCTION
PB1317 (CAT. NO. 5229 ) —1— 22-01510 (R12/01)
This manual contains useful information for the safe and efficient
operation of your Peterbilt vehicle. It also provides information on
maintaining your vehicle in the best condition, with an outline for per-
forming safety checks and basic preventive maintenance inspections.
We have tried to present the information you’ll need to learn about
your vehicle’s functions, controls, and operation - and to present it as
clearly as possible. We hope you’ll find this manual easy to use.
Please remember, though -- this manual is not a training manual. It
can’t tell you everything you need to know about driving your Peterbilt
vehicle. For that you need a good training program or truck driving
school. If you have not been trained, get the proper training before
you drive. Only qualified drivers should drive this vehicle.
There will be times when you need to take this manual out of your
Peterbilt. When you do, please be sure to return it to the cab when
you are finished using it. That way it will be there when you need it
the next time or when you pass the vehicle on to the next user.
How to Find What You Want
There are several tools built into this manual to help you find what you
need quickly and easily.
First is the Quick Table of Contents. Located at the front of the
manual, this lists the main subjects covered and gives page numbers
where you can find these subjects. Use the Quick Table of Contents
to find information on a large subject like “Maintenance.”
Cross-referenced citations also help you get the information you
need. If some other part of the manual contains further information
on the subject you are reading about, we’ll indicate that in a cross-ref-
erence like this: (See PART 6: DRIVER’S CHECKLIST). You won’t
have to go searching for more information.
Finally you’ll find a helpful Subject Index. It’s in the back of the man-
ual and alphabetically lists the subjects covered. So if you want infor-
mation on brakes, for example, just look under Brake in the Subject
Index. You’ll find all the pages listed where brakes or braking are dis-
cussed.
A Special Word about Repairs
Your Peterbilt dealer’s service center is the best place to have your
vehicle repaired. You can find Peterbilt dealers all over the country
with the equipment and trained personnel to get you back on the road
quickly - and keep you there.
Your vehicle is a complex machine. Anyone attempting repairs on it
needs good mechanical training and the proper tools. If you are sure
you have these requirements, then you can probably perform some
repairs yourself. However, all warranty repairs must be performed by
an authorized Peterbilt service facility. If you aren’t an experienced
mechanic, or don’t have the right equipment, please leave all repairs
PART 1: INTRODUCTION
PB1317 (CAT. NO. 5229 ) —2— 22-01510 (R12/01)
to an authorized service facility. They are the ones equipped to do
the job safely and correctly.
Maintenance Manuals. If you do decide to do any complex repair
work, you’ll need the Peterbilt Maintenance manuals. Order them
from your authorized dealer. Please provide your Chassis Serial
Number when you order, to be sure you get the correct manuals for
your vehicle. Allow about four weeks for delivery. There will be a
charge for these manuals.
Final Chassis Bill of Material. A complete, nonillustrated computer
printout listing of the parts used to custom-build your Peterbilt vehicle
is available through the Peterbilt dealer from whom your purchased
your vehicle.
Additional Sources of Information
Operator’s manuals are also supplied by the manufacturers of compo-
nents such as the engine, seats, transmission, and radio in your
Peterbilt. If you are missing any of these manuals, ask your Peterbilt
dealer to supply them.
Your new Peterbilt’s glove box also contains a copy of the Truck
Driver’s Handbook, published by the American Trucking Association.
Refer to it for important information on driving your vehicle. Another
place to learn more about trucking is a local truck driving school.
Contact one near you to find out what kinds of instruction it offers.
Federal and state agencies also have information you can ask for.
The Interstate Commerce Commission can give you information
about regulations governing transportation across state lines. And
various agencies in state governments are sources for regulations
that differ from state to state.
Warnings
We’ve put a number of warning messages in this manual. They are
there for your protection and information. Please read them and fol-
low them. They can help you to avoid injury to yourself and your pas-
sengers as well as to prevent costly damage to your vehicle. We’ve
WARNING! Attempting repair work without sufficient
training, service manuals, and the proper tools can be
dangerous. You could be injured or you could make
your truck unsafe. Do only those tasks you are fully
qualified to do.
WARNING! Modifying your vehicle can make it unsafe.
Some modifications can affect your truck’s electrical
system, stability, or other important functions. Before
modifying your vehicle, check with your dealer to make
sure it can be done safely.
PART 1: INTRODUCTION
PB1317 (CAT. NO. 5229 ) —3— 22-01510 (R12/01)
used certain symbols and “signal words” to indicate what kind of mes-
sage is going to follow. When you see these symbols & words, you
know that you need to pay special attention. Please don’t ignore any
of these signals.
When you see this symbol & word, the message that follows is espe-
cially vital. This signals something that can cause serious injury or
death. This message will tell you what the hazard is, what can hap-
pen if you don’t heed the warning, and how to avoid it. For example:
This symbol & word signals something that could damage your vehi-
cle. And you might receive an injury, too. For example:
Gives you information we feel you’d like to have. It could have to do
with care of your vehicle or with driving more efficiently:
Please take the time to read these messages when you see them.
And remember:
WARNING! Something that could injure you seriously.
CAUTION: Something that could cause injury to you or your
vehicle.
NOTE: Useful information.
WARNING!
WARNING! Attempting repair work without sufficient
training, service manuals, and the proper tools can be
dangerous. You could be injured or you could make
your vehicle unsafe. Do only those tasks you are fully
qualified to do.
CAUTION:
CAUTION: Continuing to operate a vehicle with insuf-
ficient oil pressure will cause serious engine damage.
NOTE:
NOTE: A cold compressor can cause refrigerant to liquefy
and warp the valve plates or cause a hydraulic lock. Warm
the engine before starting the air conditioner.
PART 1: INTRODUCTION
PB1317 (CAT. NO. 5229 ) —4— 22-01510 (R12/01)
Vehicle Safety
Make sure your Peterbilt is in top working condition before heading
out on the road—it is the
responsible
driver's duty to do so. Inspect
the vehicle according to PART 6: DRIVER’S CHECKLIST.
Please remember, this manual is not a training manual. It cannot tell
you everything you need to know about driving your Peterbilt vehicle.
For that you need a good training program or truck driving school. If
you have not been trained, get the proper training before you drive.
Only qualified drivers should drive this vehicle.
Every new Peterbilt vehicle is designed to conform to all Federal
Motor Vehicle Safety Standards applicable at the time of manufacture.
However, even with these safety features, continued safe and reliable
operation depends greatly upon regular vehicle maintenance. The
vehicle must be operated within the range of its mechanical capabili-
ties and the limits of its load ratings. (See the Tire and Rim Weight
Ratings label on the driver's door edge.)
WARNING! Do not drink and drive. Your reflexes, percep-
tions, and judgment can be affected by even a small
amount of alcohol. You could have a serious—or even fatal
accident—if you drive after drinking. Please do not drink
and drive or ride with a driver who has been drinking.
WARNING! The use of alcohol, drugs, and certain medica-
tions will seriously impair perception, reactions, and driv-
ing ability. These circumstances can substantially increase
the risk of an accident and personal injury.
PART 2: GETTING INTO AND OUT OF THE
CAB AND FRAME ACCESS
PB1317 (CAT. NO. 5229 ) —5— 22-01510 (R12/01)
Be careful whenever you get into or out of your vehicle’s cab.
Whether you have a COE or conventional cab, always maintain at
least three points of contact with your hands on the grab handles and
your feet on the steps.
COE: The pictures below show the best way to enter and exit a COE
cab.
WARNING! Jumping out of the cab or getting into the
cab without proper caution is dangerous. You could slip
and fall, possibly suffering a serious injury. Keep steps
clean. Clean any fuel, oil, or grease off of the steps
before entering the cab. Use the steps and grab han-
dles provided, and always keep at least three points of
contact between your hands and feet and the truck.
Look where you are going.
02957
PART 2: GETTING INTO AND OUT OF THE
CAB AND FRAME ACCESS
PB1317 (CAT. NO. 5229 ) —6— 22-01510 (R12/01)
CONVENTIONAL: The picture below shows the best way to enter
and exit a Conventional Cab.
Door Lock and Keys
Doors can be locked from the inside by using the lock button. Close the
door then push the button down to lock. Doors automatically unlock
when you open them from inside, and can be locked from the outside
with the key only.
To lock or unlock the doors from outside the cab, insert the key in the
lock.Turn the key toward the rear to lock; forward to unlock.
WARNING! To lessen the chance and/or severity of per-
sonal injury in case of an accident, always lock the
doors while driving. Along with using the lap/shoulder
belts properly, locking the doors helps prevent occu-
pants from being thrown from the vehicle.
02958
PART 2: GETTING INTO AND OUT OF THE
CAB AND FRAME ACCESS
PB1317 (CAT. NO. 5229 ) —7— 22-01510 (R12/01)
Climbing Onto the Deck Plate
When you are climbing onto and off the deck plate, maintain at least
three points of contact with your hands on the grab handles and your
feet on the steps.
The pictures below show you the right way to get on and off the area
behind your cab.
WARNING!
•
You can be hurt if you aren’t careful climbing onto
and off the deck plate. You can slip and fall, espe-
cially if the surfaces are wet or icy, or if you step in
oil, fuel, or grease. Keep steps clean. Always main-
tain at least three points of contact between your
hands and feet and the steps and deck plate.
•
Do not climb onto and off the deckplate–use steps
and grabhandle provided. If there is no deck plate,
or if proper steps and grab handles aren’t provided,
don’t climb onto the area behind the cab. Peterbilt
did not intend for the area to be a step if handrails or
proper steps are not provided.
02959
PART 2: GETTING INTO AND OUT OF THE
CAB AND FRAME ACCESS
PB1317 (CAT. NO. 5229 ) —8— 22-01510 (R12/01)
WARNING! Do not step on vehicle components without
antiskid surfaces or use components not designed for
entry-and-exit use. You could fall and injure yourself if
you step on a slippery surface. For example:
•
You could fall and injure yourself if you step onto a
fuel tank surface. A fuel tank is not a step. The tank
surface can get very slippery, and you might not be
able to prevent a fall. Don’t step onto the surface of a
fuel tank. Use only the steps and handholds provided,
not chain hooks, quarter fenders, etc.
•
Always reinstall steps before entering the cab or
accessing the deck plate. Without steps, you could
slip and fall, resulting in possible injury to yourself.
NOTE: Any alteration (adding bulkheads, headache racks,
tool boxes, etc.) behind the cab or sleeper that affects the
utilization of grab handles, deck plates, or frame access
steps installed by Peterbilt must comply with FMCSR 399.
02960
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —9— 22-01510 (R12/01)
Hood Hold Downs (Conventional Cabs)
Your hood hold downs keep your hood from opening unexpectedly
Hood Tilt (Conventional Cabs)
To open your hood, unlock the hood hold downs by unlatching them.
Put one hand on the top of the hood front, one foot on the bumper,
and one foot on the ground. Tilt the hood forward.
CAUTION: If you do not latch your hood securely, it
could open during operation and cause vehicle damage.
Be sure to latch the hood securely.
WARNING! Before opening or closing the hood, be sure
there are no people or objects in the way. A hood could
hurt someone in the way of its descent.
02961
02962
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —10— 22-01510 (R12/01)
Safety Cable
To attach the safety cable: The cable is on the driver’s side of the
radiator. Attach it to the hook on the hood.
COE Cab Tilt System
If you have a COE type of vehicle, your cab tilts forward for mainte-
nance on the engine and other components. An independent hydrau-
lic system raises and lowers the cab. And a positive dual locking
device increases safety and reduces the danger of mishaps while you
are driving.
WARNING! If the hood falls, anyone under it could be
injured. Always attach the safety cable to keep a hood
open any time anyone gets under a hood for any reason.
WARNING! Getting any part of your body under an
unsecured cab could cause a serious or fatal accident.
The cab could fall and crush you. Always make sure the
mechanical lock is fully engaged before getting under
the cab, or before letting anyone else get under it. See
below for instructions on using the mechanical lock.
02963
02964
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —11— 22-01510 (R12/01)
Cab tilting instructions are labeled and installed on the base of the
passenger seat in your cab.
CAUTION: Raising the cab with heavy objects in the
cab, sleeper, or luggage compartment can cause seri-
ous damage to the cab tilting mechanism and cab.
Before tilting the cab, remove heavy items such as tire
chains and tools. Remove or stow securely any loose
items. And shut the doors tightly.
WARNING! You can be seriously injured by the cab if
you do not follow safety precautions. Whenever you
raise or lower the cab, or when you work under the cab,
please remember the following safety rules:
•
Be sure no one is under the front of the cab. Whether
you are raising or lowering the cab, KEEP CLEAR.
•
Never work under a raised cab unless it is properly
supported. This means use an overhead hoist of suffi-
cient capacity to support the cab safely. Never prop
the cab up instead of using a hoist. The prop could fail
and let the cab fall on you or anyone else working
under the cab.
•
Always be sure the safety latch is engaged when you
or anyone else works under the cab.
•
Perform work only when the cab is in the mechanically
locked position or in the full tilt position.
•
When your cab’s hydraulic system needs service or
repair:
- Have maintenance and repair done only by someone
qualified in hydraulic systems.
- Be sure no one tries to bleed the system with the cab
raised. This will defeat the safety system. The cab
can fall and crush anyone under it.
- Do not tamper with any part of the cab tilt cylinders,
including removing the velocity fuses. To do so will
defeat their purpose. The cab could fall and crush
anyone under it. If you have any need for repair
involving the velocity fuses, have a qualified truck
mechanic do the work.
NOTE: In case of oil loss in the system or a lock-up in the tilt
cylinders, refer to the maintenance manual for repair instruc-
tions.
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —12— 22-01510 (R12/01)
To Raise the Cab:
1. Park the vehicle on a level surface to ensure proper hook and latch
alignment.
2. Apply the parking brake.
3. Make sure the shift lever is in Neutral. This will prevent the shift
lever from getting caught on the cab during tilt operation.
4. Secure or remove all loose items in the cab and luggage compart-
ments. Close all doors.
5. Check the clearance above and ahead of the cab. Be sure there
will be enough room to clear roof antennae, roof fairings, and side
extenders when you tilt the cab. Check for obstructions overhead,
such as branches, power lines, lights, etc. Check also for obstruc-
tions in front, such as walls, work benches, other vehicles, etc.
6. Place the control valve handle in the Tilt (Raise) position.
7. Pump the cab up until the mechanical lock engages. Now put the
control valve handle in the center position.
02965
02966
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —13— 22-01510 (R12/01)
When the cab is raised to the point where the weight of the cab is
greater in front of its hinges than to the rear, gravity will make it fall for-
ward. It will fall at a controlled rate.
8. If you want the cab in the full forward position, pull the cable to dis-
engage the mechanical lock. You may have to free the lock by
raising or lowering the cab to relieve pressure on the locking
mechanism.
WARNING! When the cab is tilted fully (90°), the roof-
mounted antenna mast could injure someone. Remove
or flag the mast before tilting the cab all the way for-
ward.
CAUTION: When tilting the cab to the full tilt, or vice
versa, hold the safety lock bar up to prevent it from
engaging at the locked position. If it does lock, your cab
could be severely damaged.
02967
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —14— 22-01510 (R12/01)
To Lower the Cab
1. Place the control valve handle in the Return (Down) position.
2. Release the mechanical lock. Hold the safety lock bar up.
3. Pump until the cab starts to descend. The valve system will con-
trol the speed in either direction automatically.
4. Leave the handle in the down position for at least 20 seconds after
the cab touches down. This allows time for the full spring force to
develop in the cab latch. Inspect the hooks to be sure they are
closed. If they are not properly engaged, raise the cab slightly and
guide the latch, if necessary, while lowering the cab.
CAUTION: Do not try to pump the cab down or hold it
down with hydraulic force. If you do, cab damage will
occur.
02968
02969
PART 3: GETTING TO YOUR ENGINE
PB1317 (CAT. NO. 5229 ) —15— 22-01510 (R12/01)
5. Return the control valve handle to the Lock (Center) position for
normal operation.
WARNING! Placing any part of your body between the
cab and the frame could result in serious injury. Keep
hands and feet out from under the cab if it must be
raised to re-engage the cab latches. Guide the cab from
the outer surfaces only.
CAUTION:
•
Do not continue to operate the pump after the cab is in
the full Down position. Additional pumping could
cause structural damage to the cab.
•
Driving with the cab tilt lock unsecured can damage
your vehicle. Check daily to be sure the lock is closed
securely.
NOTE: In case of oil loss in the system or a lock-up in the tilt
cylinders, refer to the maintenance manual for repair instruc-
tions.
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —16— 22-01510 (R12/01)
Your Instrument Panel
This part explains the location of the various features on your vehicle
and describes their function. For information on using these features
in driving, see the paragraphs below. Please remember that each
Peterbilt is custom-made. Your instrument panel may not look exactly
like the one in the pictures below. We have tried to describe all the
most common features and controls available. You can pick out the
parts that apply to you and read them to be fully informed on how your
particular vehicle operates.
Typical Conventional Cab Instruments and Controls
LEFT SIDE
1. Tachometer 8. Speedometer
2. Oil Pressure 9. Clearance Lamps
3. Clock 10. Headlamps
4. Oil Temperature 11. Ignition Key Switch
5. Warning Lamp Cluster 12. Windshield Wiper/Washer
6. Water Temperature 13. Panel Light Dimmer
7. Dual Air Pressure
1
3
4
5
6
7
82 Panel A
910
11 12 13
Panel C
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —17— 22-01510 (R12/01)
Conventional
RIGHT SIDE
1. Fuel 13. Engine Brake
2. Air Cleaner Restriction 14. Engine Fan
3. Transmission Oil Temperature 15. Fuel Tank Selector
4. Voltmeter 16. LH Air Window
5. Manifold Pressure 17. RH Air Window
6. Front Driver Oil Temperature 18. Sleeper Door Lock
7. Air Application 19. Cab Door Lock
8. Pyrometer 20. RH Mirror
9. Rear Driver Oil temperature 21. Mirror Heat
10. Air Suspension 22. LH Mirror
11. Fifth Wheel 23. Day/Night Signal
12. Interaxle Differential Lock 24. Cruise Control
Panel B
12 3
45 6
7 8 9
10
11
12
Panel D
13 14 15 16 17
18192021222324
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —18— 22-01510 (R12/01)
Typical COE Instruments and Controls
LEFT SIDE
1. Hazard Flasher 14. Water Temperature
2. Turn Signal 15. Speedometer
3. Ignition Switch 16. Air Pressure
4. Start Button 17. Air Pressure
5. Manifold Pressure 18. Transmission Temperature
6. Air Cleaner Restriction Gauge 19. Fuel Gauge
7. Ammeter 20. Clock
8. Voltmeter 21. Front Driver Temperature
9. Engine Oil Temperature 22. Rear Driver Temperature
10. Tachometer 23. Lighter
11. Oil Pressure 24. Trip Odometer
12. ABS Warning Lamp 25. Shift Pattern Decal (if used)
13. Pyrometer
02973
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —19— 22-01510 (R12/01)
COE
RIGHT SIDE
1. Air Suspension Switch 13. Engine Fan
2. 5th Wheel Lock 14. Headlamps
3. Lockout Differential Switch 15. Ether Switch
4. Reset Circuit Breakers 16. Trailer Brake Hand Valve
5. Retarder Switch 17. Cab Air Selector
6. Loading Lamp 18. Cab Heat Control
7. Fuel Tank Selector L/R 19. Cab Ventilation
8. Light Toggle Switch 20. Cab A/C Control
9. Spot Light 21. Parking Brake Valve
10. Engine Brake 22. Trailer Air Supply
11. Mirror Heat 23. Right Hand Air Window
12. Clearance Lamps 24. Windshield Washer / Wiper
02974
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —20— 22-01510 (R12/01)
Steering Column-Mounted Controls
Turn Signal and Indicator Lights
Model 379 vehicles built on
or after 5/1/98 with SRS
Your turn signal lever is mounted on the left side of the steering col-
umn below the steering wheel. Green directional indicator lights
appear on the instrument panel.
To operate the signal, move the lever in the direction of the turn.
NOTE: The ignition key must be turned to ON for the signal/
switch to operate.
WARNING! After you complete a turn, shut the system off
by returning the lever to the “OFF” (center) position. The
switch's lever action is NOT self-canceling. Failure to shut
off a turn signal could confuse other drivers and result in
an injury accident. An indicator light in the instrument
panel will flash until the turn signal is turned off.
02882 02882A
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —21— 22-01510 (R12/01)
Hazard Flasher
Model 379 vehicles built on
or after 5/1/98 with SRS
The four-way Hazard Flasher switch is on the turn signal body, just
below the turn signal lever. It will operate with the key switch in the on
or off position. Use your hazard flasher whenever you are off the
road or on the side of the road, or in a potentially hazardous situation.
Pull it out to activate the system. All turn signals will flash at once. To
turn it off, move the turn signal lever up or down. Of course, in normal
stopping in traffic, such as at a stop light, you do not use your flash-
ers.
Air Horn
Your Peterbilt has an air horn in addition to an electric horn. Control
the air horn by pulling on the lanyard extending from the overhead
header panel.
WARNING!
Use your Hazard Flasher Warning System any
time you have to stop off the road or on the side of the
road, day or night. A hard-to-see vehicle can result in an
injury accident. Another vehicle could run into you if you
do not set your flashers. Always move the vehicle a safe
distance off the road when stalled or stopped for repairs.
A
disabled vehicle can be dangerous for you and others.
•
The hot exhaust system could ignite dry grass, spilled
fuel, or other substances. Do not park or operate your
vehicle where the exhaust system could contact dry
grass, brush, spilled fuel, or any other material that
could cause a fire.
02883 02883A
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —22— 22-01510 (R12/01)
High Beam Headlights
Model 379 vehicles built on
or after 5/1/98 with SRS
All Peterbilt vehicles come equipped with a combination turn signal and
high beam/low beam switch. To switch your headlights lower or higher
•For Model 379 vehicles built on or after 5/1/98 with SRS: Gently
pull the turn signal lever up, towards the steering wheel, until you
hear the switch “click” and the beam changes.
•For all other vehicles: Push and release the button on the end of
the turn signal lever
Electric Horn
Your Peterbilt has an electric horn. To sound the horn, press on the
button or bar in the center of the steering wheel.
Model 379 vehicles built on
or after 5/1/98 with SRS
02884 02884A
02886 27884
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —23— 22-01510 (R12/01)
Trailer Brake Hand Valve
Model 379 vehicles built on or after 5/1/98 with SRS
This hand valve provides air pressure to apply the trailer brakes only.
It operates independently of the foot treadle valve.
To operate the trailer brake hand valve: Pull down on the lever
under the right side of the steering wheel or on the dash (COE models).
See “Brake Safety and Emergency” for more complete information on
when and how to use your trailer brake. Or see the Index, under Brake.”
WARNING! Grabbing the trailer hand brake lever instead
of the BrakeSaver lever could lead to an accident. If you
have these levers, they may be close together on your
steering wheel column. Be sure you get the one you
want. The BrakeSaver lever is bent, while the trailer park-
ing brake lever is straight (see
page 36
).
NOTE: The trailer brake is not to be used as the main
means of braking. To use this brake frequently instead of
using the foot brake will wear out the trailer brake sooner.
02975
02975A
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —24— 22-01510 (R12/01)
Tilt- Telescoping Steering Column
The tilting feature of the steering wheel allows forward and rearward
movement of the wheel. The telescoping feature allows you to move
the wheel up and down.
Model 379 vehicles built on
or after 5/1/98 with SRS
•Model 379 vehicles
To tilt the wheel: Push the lever away from yourself. Move the
steering wheel to the desired angle, then release the lever to lock.
To raise or lower the wheel: Pull the lever towards yourself. Push
or pull the wheel to the desired height, then release the lever to lock.
•All other models
To tilt the wheel: Pull the lever towards yourself. Move the steer-
ing wheel to the desired angle, then release the lever to lock.
To raise or lower the wheel: Push the lever away from yourself.
Push or pull the wheel to the desired height, then release the lever
to lock.
WARNING! It is dangerous to use air-applied trailer
brakes for parking or holding a vehicle. Air system pres-
sure can bleed down and release the brakes. You could
have a vehicle roll-away resulting in an accident. You or
others could be badly injured. Always apply the parking
brakes for parking or holding your vehicle on grade.
WARNING! Adjusting the Tilt-Telescoping Steering
Wheel while the vehicle is in motion could cause loss of
control. You wouldn’t be able to steer properly and
could have an accident. Make all adjustments to the
steering mechanism while the vehicle is stopped.
02976 02976A
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —25— 22-01510 (R12/01)
Dash-Mounted Features
Keys and Locks
Conventional Models: The same key fits your ignition, doors, and
sleeper luggage compartment.
COE Models: The same key operates the ignition and opens the
doors and the glove box.
Frame-mounted tool box locks and locking fuel tank caps each have
individual keys.
Ignition Switch
Your ignition switch has three (COE) or four (conventional) positions:
ACC (Accessory): With your key in this position you can play the
radio or use other accessories, but your engine
won’t start.
OFF: In this position all systems are off, and you can
remove your key.
IGN & ACC: This position allows you to turn on the engine
and all accessory power.
START: Starter activation to start engine (conventional
models only).
02977A
ACC ONLY
OFF
IGN & ACC
START
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —26— 22-01510 (R12/01)
Starter Button
On COE models: with the key switch in the IGN & ACC position, push
the starter button; this will engage the starter motor and crank the
engine.
Manual Override for Engine Shutdown
On vehicles with an engine shutdown, you will have to hold the man-
ual throw switch in the UP position until normal engine pressures are
reached. If you have one of these systems, a label on the control
panel will say so.
For detailed starting procedures, see the Index, under Starting and
Operating 80.
02887
02889
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —27— 22-01510 (R12/01)
Hand Throttle Control
If you have a hand throttle, in conventional cabs it is usually located to
the left of the driver’s seat, mounted on the floor. In COEs it is under
the lefthand dash. It can be especially helpful in cold weather to keep
your engine running at above idle speed when you leave the vehicle
briefly.
For more information on idling your engine safely, see the Index,
under Engine.
Headlights
The headlights are controlled by the control panel switch showing this
symbol. When the headlights are ON, the dash lights, side, and tail
lamps are also on.
WARNING! Do not use the hand throttle control as a
cruise control. It could cause an accident and you
could be seriously injured. In an emergency you might
not be able to unset it in time to save yourself and your
vehicle from an accident. Never try to control road
speed with your hand throttle control. Always push in
the hand throttle before driving the vehicle.
WARNING! Do not use daytime running lights (DRL)
during periods of darkness or reduced visibility. Do not
use DRL as a substitute for headlights or other lights
during operations that require lighting of your vehicle.
Doing so could lead to an injury accident
NOTE: On vehicles equipped with daytime running lights
(DRL), the high-beam headlamps go on automatically at
reduced brightness if the engine is running and the head-
lamp switch is turned off. The daytime running lights are
turned off automatically while the parking brake is engaged.
If the headlamp switch is turned on, the DRL system is over-
ridden & headlamps operate normally.
02890
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —28— 22-01510 (R12/01)
Panel Light Knob
The Panel Light Knob lets you vary the brightness of your instrument
panel lights.
To Operate Your Panel Light Knob:
1. Turn on either the headlights, clearance lights, or fog / driving
lights.
2. To brighten the instrument panel lights, turn the knob clockwise (to
the right).
3. To dim the instrument lights or to turn them off, turn the knob coun-
terclockwise (to the left).
ID and Clearance Lights Switch
These are the amber lights on top of your cab, the lights on the front
and sides of the trailer, and the red lights on the rear of a truck or
trailer. They are controlled by the control panel switch labelled CL
LPS.
02891
02892
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —29— 22-01510 (R12/01)
Fog Lights Switch
If your vehicle has fog lights, turn them ON or OFF with the control
panel switch labelled FOG LIGHT.
Dome Light Switch
A three-position switch controls each dome light.
Position 1 (Center): Light is OFF.
Position 2 (Upward): Light will stay ON.
Position 3 (Downward): Light will turn ON when a door is opened
and OFF when the door is closed.
NOTE: State requirements vary as to when high beams and
fog lights can and cannot be used together. Further, some
states allow only four lights to be used together; some allow
more. Whether you have dual or composite lights will affect
how many lights you can have on at one time. Always com-
ply with the state requirements where you are driving.
02893
02894
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —30— 22-01510 (R12/01)
Windshield Wipers and Washers
Wiper
To turn on the wipers rotate the knob to the right. As the knob is
rotated, the speed of the wipers increases. To turn off the wipers,
rotate the knob to the left.
Washer
To use the washer, push the knob showing the symbol above. With
the electric wipers, the wipers will come on for a short time when the
washer starts.
Intermittent Windshield Wiper Control
Two-speed intermittent windshield wipers are controlled by the con-
trol panel knob with the symbol shown above. To turn on the wipers,
rotate the knob to the right.
As you turn the knob further to the right, intermittent delay decreases
until the knob encounters the first position for continuous operation.
Turn the knob further right to the next position for higher speed con-
tinuous operation. Turn off the wipers by rotating the knob to the left.
WARNING! Do not drive with worn or dirty wiper blades.
They can reduce visibility, making driving hazardous.
Clean blades regularly to remove road film and wax build-
up. Use an alcohol-based cleaning solution and a lint-free
cloth, and wipe along the blades.
CAUTION: Do not use antifreeze or engine coolant in the
windshield washer reservoir—damage to seals and other
components will result.
02896
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —31— 22-01510 (R12/01)
Air Suspension Deflate Switch (Dump Valve)
Your Peterbilt vehicle may have an air suspension deflation switch
which allows the air in the suspension to be exhausted from a switch
on the dash. The purpose of this feature is to allow you to lower your
tractor to get under a trailer.
You may notice a guard over the switch. This prevents you from acci-
dentally deflating the suspension.
WARNING! Operating the Air Suspension Deflate
Switch (Dump Valve) while driving can lead to an acci-
dent. Sudden deflation while your vehicle is moving
can affect handling and control. Use this switch only
when your vehicle is not moving.
CAUTION: Operating a vehicle with air suspension
bags either overinflated or underinflated may cause
damage to driveline components. If a vehicle must be
operated under such conditions, do not exceed 5 mph.
02897
AIR SUSPENSION 03035
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —32— 22-01510 (R12/01)
Engine Fan Switch
The engine fan switch allows you to control the engine fan manually
or automatically. With the ignition key switch ON and the fan switch in
the ON position, the engine fan will be on regardless of engine tem-
perature. With the engine fan switch in the AUTOMATIC position, the
engine fan will automatically turn on when the engine coolant reaches
a temperature of about 200°F.
WARNING! Do not work on the fan with the engine run-
ning. Anyone near the engine fan when it turns on
could be badly injured. If it is set at ON, it will turn on
any time the ignition key switch is turned to the ON
position. In AUTOMATIC, it could engage suddenly
without warning. Before turning on the ignition or
switching from AUTOMATIC to ON, be sure no one is
near the fan.
CAUTION: The fan or equipment near it could be dam-
aged if the fan turns on suddenly when you don’t expect
it. Keep all tools and equipment such as rags away
from the fan, and take care no one turns on the ignition
when someone is working near the fan.
CAUTION: Do not operate the engine fan in the manual
(ON) position for extended periods of time. The fan hub
was designed for intermittent operation. Sustained
operation will shorten the fan hub’s service life as well
as reduce fuel economy.
02898
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —33— 22-01510 (R12/01)
Cruise Control Switch
The master switch turns the cruise control ON or OFF. The second
switch allows you to SET the desired speed or RESUME the desired
speed after the cruise control function has been interrupted.
In conventional models with Eaton transmissions, the cruise control
switches may be located on the shift control knob (see illustration):
WARNING! Do not operate the cruise control when operat-
ing on road surfaces with poor traction (wet, icy, or snow
covered roads) or in heavy traffic. Accelerations caused by
the normal operation of the cruise control could cause you
to lose control of the vehicle resulting in an injury accident.
NOTE: Cruise control functions and features may vary
depending upon which engine you have. For specific expla-
nation of your cruise control, see the cruise control or engine
manual included with your vehicle.
02901
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —34— 22-01510 (R12/01)
Power Mirror Switch
The power mirror control controls the adjustment of the right and left
outside mirrors. To adjust: Push to R or L to select which mirror you
want to adjust. Next push the arrow that points toward the direction
you want to move the mirror.
Mirror Heat Switch
Mirror heat is controlled by the control panel switch labelled MIR HT.
If the vehicle is equipped with this switch, mirror heat can be switched
on to help remove frost and ice from the mirror glass.
WARNING! Convex mirrors can distort images and make
objects appear smaller and farther away than they really are.
You could have an accident if you are too close to another
vehicle or other object. Keep plenty of space between your
vehicle and others when you turn or change lanes. Remem-
ber that other objects are closer than they may appear.
NOTE: The Power Mirror Switch does not control the adjust-
ment of the convex mirrors.
02900
02899
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —35— 22-01510 (R12/01)
Digital Message Center
The optional digital message center (DMC) is an onboard computer
used to provide the following:
•trip information
•clock/calendar
•fuel economy
•sensor data
•fault codes
•maintenance information
•warning messages
The DMC is available on conventional models. The DMC vacuum-
fluorescent display is capable of displaying 40 characters. Navigation
through the information is done by means of an integral keypad.
Refer to the DMC operator’s manual that came with the vehicle for
more information on using this component.
RESET MSG
DIAG
TRIP
FUEL
SENSOR
CLOCK
MAINT
INFO
CANCEL
ENTER
∨
∨
∨
°
°
∨
03038
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —36— 22-01510 (R12/01)
Brakesaver
The Caterpillar BrakeSaver provides auxiliary braking to slow the
vehicle and to control speed on long grades. Refer to the BrakeSaver
Operation section of the Caterpillar manual for complete operating
instructions.
Manual Control Lever
This hand-operated control lever provides modulated application of
the BrakeSaver in the manual or ON mode. How much braking you
get depends on how much you move the lever.
Manual and Automatic Control Switch
With the switch in the AUTOMATIC position, the BrakeSaver will be
fully applied automatically when the operator has the vehicle in gear
and takes his or her foot off the accelerator pedal.
With the switch in the ON position, the BrakeSaver will be applied
constantly, regardless of whether the operator has the vehicle in gear
or his or her foot off the accelerator.
A Control Air Pressure gauge and an Engine Oil Temperature gauge
are provided with the BrakeSaver.
02902
02903
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —37— 22-01510 (R12/01)
Jacobs Engine Brake or Cummins “C” Brake Switch
2-Mode and 3-Mode Systems
The ON/OFF switch turns the system ON or OFF. The second switch
performs the progressive braking function that controls the amount of
retarding:
•If you have the three-mode system, you can select low (A),
medium (B), or high (A + B) retarding.
•If you have the two-mode system, you can select HIGH or LOW.
In conventional models with Eaton transmissions, the engine brake
switch may be located on the shift control knob (see illustration):
For more information on when and how to use the engine brake in
your vehicle, see the engine brake manufacturer’s owner’s manual
that is included with your vehicle.
WARNING! Using the engine brake when operating on
surfaces with poor traction (such as wet or icy, slippery
roads or gravel) could cause loss of control.
02904
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —38— 22-01510 (R12/01)
Interaxle Differential Lock Switch
The interaxle differential allows differential action between the for-
ward rear and the rear rear driving axles. The interaxle differential
lock switch allows the operator to LOCK or UNLOCK the differential.
The guard over this switch prevents you from accidentally activating
the lock.
See “Interaxle Differential” on page 87 for more information on using
your interaxle differential.
Two-Speed Rear Axle (Range) Switch
If your vehicle is equipped with a two-speed rear axle, you can select
the axle range by the dash mounted switch shown above. The low
range provides maximum torque for operating off-highway. The high
range is a faster ratio for highway speeds.
For information on how to operate your two-speed rear axle properly
and safely, see PART 7: STARTING & OPERATING THE VEHICLE
or check the Index, under Two-Speed Rear Axle (Range) Switch 38.
WARNING! Placing the differential lock in the “LOCK”
position while your wheels are spinning could cause
loss of control or axle damage. You could be hurt.
Switch to “LOCK” only when your wheels are not spin-
ning.
02905
02906
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —39— 22-01510 (R12/01)
Fifth Wheel Lock (Slider Adjustment) Switch
Vehicles having an air slide fifth wheel have a fifth wheel slider lock
controlled by a switch on the instrument panel. By placing the switch
in the unlock position, you can slide the fifth wheel to various posi-
tions to adjust weight distribution. There is a guard over this switch to
protect you against accidentally activating or releasing the lock.
VARASHIELD® Wind Deflector Switch
The VARASHIELD Wind Deflector is a roof-mounted, adjustable
shield for improving vehicle aerodynamics.
You may have a manual or an electric VARASHIELD. The electric
model is controlled by a dash-mounted toggle switch. If you have one
of these, you may vary the VARASHIELD angle from 0 degrees to 50
degrees while the vehicle is stationary or in motion. The gauge on
the dash indicates the position.
WARNING!
Do not move of the fifth wheel while the trac-
tor-trailer is in motion.
Movement of the fifth wheel while
a tractor-trailer is moving can cause a serious accident.
Your load could shift suddenly, causing you to lose con-
trol of the vehicle. Never operate the vehicle with the
switch in the unlock position. Always inspect the fifth
wheel after you lock the switch to be sure the fifth wheel
is engaged
02907
CAB CONTROL
0I
03031
02978
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —40— 22-01510 (R12/01)
Manual Adjust
If you have the manual VARASHIELD, you will adjust it from the roof
of the cab. Move it to the desired angle with the telescoping strut that
is secured by a bolt and locknut. Proper VARASHIELD angle is
affected by wind, trailer height, and the gap between the tractor and
trailer. Usually the VARASHIELD should be down, at 0 degrees,
when the tractor is operating without a trailer or pulling a flatbed. With
all other trailers, you adjust the VARA-SHIELD to its best angle by
noticing the lower manifold boost pressure at cruise (as indicated by
the manifold pressure gauge), or the reduction in road dirt deposited
on the front of the trailer.
Parking Brake Valve and Trailer Air Supply Valve
Single Valve
Your parking brake valve is a yellow diamond-shaped knob located
on the right-hand control panel of conventional cab models and on
WARNING! Operating the electric VARASHIELD with
someone near it can be dangerous. Moving parts could
cause an injury to hands, feet, or anything else in the
way. Do not operate the VARASHIELD when anyone is
near it.
CAUTION: The electric motor of a VARASHIELD is
designed for use during moderate, slow speed opera-
tion only. Do not operate it while driving at speeds
greater than 35 mph. Do not operate the VARASHIELD if
it is obstructed by ice or packed snow. Additionally,
excessive continuous operation could cause the motor
to overheat. Do not change the angle continually.
WARNING! You could fall and be badly injured by trying
to climb to the top of the cab without the right equip-
ment. Always use a ladder or scaffolding to get up to
adjust your manual VARA-SHIELD.
02908
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —41— 22-01510 (R12/01)
the console panel of COE models. It controls the parking brakes for
straight truck or tractor-trailer combinations.
To apply all parking brakes, pull the yellow, or parking brake, knob
out. The truck or tractor parking brakes will set, and the Trailer Air
Supply Valve (red octagon knob) will automatically trip (“pop out”) and
set the trailer parking brakes. To release both truck/tractor and trailer
parking brakes, push in BOTH yellow and red knobs. For full informa-
tion on using parking brakes, see the Index, under Brakes.
Heater-Air Conditioning Controls
Your heat and air conditioning controls are mounted on the dog house
instrument panel in COE models and below the right hand instrument
panel in conventional models. Additionally, the sleeper compartment
may also contain a separate heating and cooling system with sepa-
rate controls.
WARNING! Stopping with the parking brake controls
can cause a sudden wheel lock-up, loss of control, or
can cause you to be overtaken by following vehicles.
You could be severely injured. Never pull out the park-
ing brake valve while the vehicle is moving.
WARNING! Exhaust fumes from the engine contain carbon
monoxide, a colorless and odorless gas. Do not breathe the
engine exhaust gas. A poorly maintained, damaged or cor-
roded exhaust system can allow carbon monoxide to enter
the cab or sleeper. Entry of carbon monoxide into the cab is
also possible from other vehicles nearby. Failure to properly
maintain your vehicle could cause carbon monoxide to enter
the cab/sleeper and causes serious illness.
CAUTION: Never idle your vehicle for prolonged periods of
time if you sense that exhaust fumes are entering the cab
or sleeper. Investigate the cause of the fumes and correct it
as soon as possible. If the vehicle must be driven under
these conditions, drive only with the windows slightly
open. Failure to repair the source of the exhaust fumes may
lead to personal harm.
02909
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —42— 22-01510 (R12/01)
To Set the Heater-Air Conditioning Controls
COE:
The COE panel contains two toggle switches and three sliding levers for
providing cab temperature control in all weather conditions (see illustra-
tion below). A secondary panel is located on the upper left wall of the
bunk or sleeper and contains two toggle switches and a rotary thermo-
stat switch to control the temperature. The thermostat controls the oper-
ation of the blower to maintain temperature within the selected range.
NOTE: Keep the engine exhaust system and the vehicle’s cab/
sleeper ventilation system properly maintained. It is recommended
that the vehicle’s exhaust system and cab/sleeper be inspected
•
By a competent technician every 15,000 miles
•
Whenever a change is noticed in the sound of the
exhaust system
•
Whenever the exhaust system, underbody, cab or
sleeper is damaged
NOTE: To allow for proper operation of the vehicle ventilation
system, keep the inlet grille at the base of the windshield clear
of snow, ice, leaves and other obstructions at all times.
NOTE: Do not stay in the vehicle with the engine running or
idling for more than 10 minutes with the vehicle’s Heater and
A/C ventilation system in RECIRC or at LOW FAN SPEED.
Even with the ventilation system On, running the engine
while parked or stopped for prolonged periods of time is not
recommended.
NOTE: If you are required to idle your vehicle for long periods of
time, install an auxiliary heater or automatic idle control. These auxil-
iary devices can reduce fuel consumption and save you money.
NOTE: When idling for short periods of time
•
Set the heating or cooling system to Heat or A/C
•
Set the fan to Medium or High speed
•
Set the controls to FRESH AIR
NOTE: If other vehicles are parked next to you idling, move
your vehicle or do not stay in your vehicle for prolonged periods
of time.
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —43— 22-01510 (R12/01)
Conventional Cab:
The Conventional cab’s control panel may have up to six controls
(four for vehicles without a sleeper unit); see illustration below:
•A rotary knob (A) in the upper left portion controlling the blower
speed with four settings.
•A rotary knob (B) in the upper center portion controlling the move-
ment of air within the cab. This control is continuously variable
through five modes (clockwise from left):
- Panel
- Panel/Floor
- Floor
- Defrost/Floor
- Defrost
•A rotary knob (C) in the upper right portion controlling the air tem-
perature.
•A rocker switch (D) in the lower left portion to engage the air condi-
tioner compressor (only vehicles with air conditioning).
02979
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —44— 22-01510 (R12/01)
•A rocker switch (E) in the lower center portion to select either fresh
or recirculated air mode.
•A rocker switch (F) on the lower right portion to send power to the
“bunk” or sleeper control panel (only vehicles with a sleeper unit).
The conventional sleeper control panel will have three controls (two
for vehicles without air conditioning); see next illustration
•A rotary knob (A) in the left portion controlling the blower speed
with four settings.
•A rotary knob (B) in the right portion controlling the air tempera-
ture.
•A rocker switch (C) in the center portion to engage the air condi-
tioner compressor (only vehicles with air conditioning).
02980
02981
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —45— 22-01510 (R12/01)
The cab “bunk” control rocker switch must be ON for the sleeper con-
trols to function.
•To heat the cab, select the desired air mode and set the tempera-
ture knob to hot (the red position on the control) and the blower to
whatever speed makes you most comfortable.
•To defog the windshield, select the Defrost mode and turn the
blower speed to high. Set the temperature knob to hot (the red
position on the control). The air conditioner is automatically acti-
vated to remove moisture from the cab. After the windshield is
clear, adjust the mode, blower speed, and temperature to your
comfort.
•To cool the cab, turn on the A/C switch, set the temperature knob
to cool (the blue position on the control), and the blower to high
until the cab becomes cool. Then you can turn down the blower if
you wish.
For Efficient Cooling:
1. Be sure all heater - air conditioner controls are off.
2. Start the engine. Allow time for warm-up.
3. Set the air control in the RECIRC mode.
WARNING! Do not drive with visibility reduced by fog, con-
densation, or frost on the windshield. Your view may be
obscured, which could result in an injury accident. For
clear visibility and safe driving it is extremely important for
you to follow the instructions pertaining to the function and
use of the ventilation/heating and defogging/defrosting
system. If in doubt, consult your dealer. Maximum heating
output and fast defrosting can be obtained only after the
engine has reached operating temperature.
CAUTION: During extreme cold weather, do not blow hot
defroster air onto cold windshields. This could crack the
glass. Turn the air flow control lever to Defrost and adjust
the fan speed accordingly while the engine warms. If the
engine is already warm, move the temperature selector to
Cool, then gradually increase the temperature when you
see that the windshield is starting to warm up.
CAUTION:
•
A cold compressor can cause refrigerant to liquefy
and warp the valve plates or cause a hydraulic lock.
Warm the engine before starting the air conditioner.
•
To avoid damage to the compressor& blower motors,
turn off all controls when a system is not in use.
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —46— 22-01510 (R12/01)
4. Close all windows.
5. Idle the engine between 1000 and 1500 RPM and turn the blower
speed control to high.
6. After the cab temperature cools to a comfortable level, adjust the
blower speed and controls to keep the desired condition.
Cigarette Lighter
Lighter
To operate your lighter, push the knob in. After a few moments the
lighter will automatically pop out, ready to use. After use, insert the
knob, but don’t push it in. The lighter circuit is protected by a 20-
ampere fuse to prevent damage should the lighter get stuck in the IN
position. If this fuse needs replacement, check to ensure that the
lighter is not stuck before replacing the fuse.
The lighter receptacle may be used to power auxiliary equipment that
does not draw more than 20 amperes maximum.
Ashtray
NOTE: When the air conditioner isn’t in regular use, operate
it for at least 15 minutes at least once a month or every
5,000 miles(8,000 Km), whichever comes first. This will
lubricate the seals in the air conditioning system. The air
conditioning system is active when the Defrost mode is
selected.
WARNING! Do not exceed the voltage/amperage capacity
of the cigarette lighter. It could result in a fire. Follow all
warnings and instructions in the operator’s manual for the
appliance you are using.
WARNING! Paper or other combustible substances in
an ashtray could cause a fire. Keep all burnable materi-
als besides smoking materials out of the ashtray.
02912
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —47— 22-01510 (R12/01)
Glove Compartment
To open your glove compartment, push or turn the latch. To close it,
push the cover up and press to latch it.
The glove compartment can be locked. Turn your ignition key clock-
wise (right) to lock and counterclockwise (left) to unlock.
WARNING! An open glove compartment can be danger-
ous. In an accident or sudden stop, you or a passenger
could be thrown against the cover and injured. Keep
the cover closed when the vehicle is in motion.
02982
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —48— 22-01510 (R12/01)
Gauges
On the pages that follow you will find descriptions of some of the
gauges on your instrument panel. For more information about using
them in driving, see PART 7: STARTING & OPERATING THE VEHI-
CLE. Also check the Index under the name of the gauge or function
you want to know more about.
Speedometer / Odometer
The speedometer indicates your vehicle’s speed in miles per hour
and in kilometers per hour. The odometer, in the center of the speed-
ometer, records the miles your vehicle has traveled.
Trip Odometer
Some vehicles are also equipped with a trip odometer which tells how
many miles the vehicle has gone on a particular trip. To use it, press
the button next to the trip odometer. The numbers will record 0, and
will then begin to count the miles traveled. To start over, just push the
button again.
WARNING! Do not ignore a warning light or buzzer. These
signals tell you something is wrong with your vehicle. It
could be a failure in an important system, such as the
brakes, which could lead to an accident. Have the appropri-
ate system checked immediately.
02983
02984
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —49— 22-01510 (R12/01)
Tachometer
Your tachometer measures the engine speed in revolutions-per-
minute (RPM). Watching your tachometer is important to driving effi-
ciently. It will let you match driving speed and gear selection to the
operating range of your engine. If your engine speed gets too high,
you can select a higher gear to lower the RPM. If your engine speed
drops too low, you can select a lower gear to raise the RPM.
Air Application Gauge
This gauge will show you how much air pressure is being applied
from your foot brake valve or trailer brake hand valve.
02985
02986
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —50— 22-01510 (R12/01)
Dual Air Pressure Gauge (Air Reservoir)
The dual air pressure gauge indicates the amount of air pressure in
the brake system in pounds per square inch (psi). The white pointer
shows the front reservoir air pressure, and the red pointer indicates
pressure in the rear reservoir. Ensure the air pressure registers more
than 100 psi in both service systems before you move the vehicle.
If the pressure in either or both circuits is too low for normal brake
operation (the pointer of one gauge is in the red sector), a warning
light in the panel will glow and the audible alarm will sound.
WARNING! The air pressure warning light and the audi-
ble alarm indicate a dangerous situation. There is not
enough air pressure in the reservoirs for repeated brak-
ing
and the brake system has failed
.
If air pressure falls
below 60 psi (414 kPa) the spring brakes could suddenly
apply, causing a wheel lockup, loss of control, or your vehi-
cle to be overtaken by following vehicles. You could be in
an accident and severely injured.
If these alarms come on
while you are driving, bring your vehicle to a safe stop
right away. If the light and alarm do not turn off at start-
up, do not try to drive the vehicle until the problem is
found and fixed
02987
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —51— 22-01510 (R12/01)
Engine Oil Pressure Gauge
It is important to maintain oil pressure within acceptable limits. Your
engine manual will give normal operating pressures for your engine.
If your oil pressure fails to rise within 10 seconds after your engine
starts, stop the engine and determine the cause.
If your oil pressure suddenly drops while you are driving, bring the
vehicle to a stop as soon as possible in a safe location off the road
and turn off the engine. Wait a few minutes to allow oil to drain into
the oil pan, and then check the oil level. Add oil if necessary. If the
problem persists, contact an authorized service center.
Check the engine manufacturer’s manual for the correct oil pressure
ranges for your engine.
Water Temperature Gauge
The water temperature gauge shows the temperature of the engine
coolant. Under normal operating conditions the water temperature
gauge should register between 165° and 205° F (74° and 90° C).
Under certain conditions, somewhat higher temperatures may be
acceptable. But the maximum allowable temperature is 210° F (99°
C) with the cooling system pressurized, except for certain special
engines. Check your engine manual to be sure.
CAUTION: Continuing to operate your vehicle with in-
sufficient oil pressure will cause serious engine damage
02988
02989
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —52— 22-01510 (R12/01)
Engine Overheating
Wait until the coolant temperature is below 122° F (50° C). Protect
your face, hands, and arms by covering the cap with a large, thick rag
to protect you against escaping fluid and steam. Before you com-
pletely remove the cap, carefully and slowly turn the cap part way to
allow excess pressure to escape. Then push down and turn for final
removal.
The cooling system may overheat if the coolant level is below normal
or if there is a sudden loss of coolant (such as a worn hose splitting).
It may also temporarily overheat during severe operating conditions
such as climbing a long hill on a hot day or stopping after high-speed
driving.
If the “Engine Coolant Temperature” warning light comes on, or you
have any other reason to suspect the engine may be overheating:
•Stop the vehicle, but DON’T TURN OFF THE ENGINE unless a
low water warning device indicates a loss of coolant.
•With the transmission in neutral, check to be certain the oil pres-
sure gauge reads normal. Increase the engine speed to about
1100 - 1200 RPM, maximum. Return the idle speed to normal
after 2 or 3 minutes. If the warning light doesn’t go off or the tem-
perature gauge doesn’t begin to drop, then turn the engine off.
•If the overheating came from severe operating conditions, the tem-
perature should have cooled by this time. If it has not, stop the
engine and let it cool before checking to see if the coolant is low.
WARNING! Do not remove the radiator fill cap while the
engine is hot. Scalding steam and fluid under pressure may
escape and cause serious personal injuries. You could be
badly burned.
•
Wait until the coolant temperature is below 122°F
(50°C).
•
Protect face, hands, and arms by covering the cap
with a large, thick rag to protect against escaping fluid
and steam.
•
Carefully and slowly turn the cap one-quarter of a turn
or until it reaches the first stop—allowing excess pres-
sure to escape—push down and turn for final removal.
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —53— 22-01510 (R12/01)
Fuel Gauge
The fuel gauge shows the approximate amount of fuel in the fuel
tanks. Besides empty and full, the gauge also indicates 1/4, 1/2, and
3/4 of total capacity. You will want to keep your fuel tanks at least half
full to reduce condensation of moisture in the tanks. This moisture
can damage your engine.
Warning Lights and Buzzers
Conventional Lamp Cluster
WARNING! Do not remove a fuel tank cap near an open
flame. Hot fuel vapors are combustible and can cause an
explosion or fire resulting in injury or death.
WARNING! Carrying additional fuel containers in your
vehicle is dangerous. Full or empty, they may leak,
explode, and cause or feed a fire. Don’t carry extra fuel
containers - even empty ones.
WARNING! Ignoring a warning light or buzzer could
lead to an accident. These signals tell you something is
wrong with your vehicle. It could be a failure in an
important system, such as your brakes. Never ignore a
warning signal. Have the appropriate system checked
right away.
02990
ABS
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —54— 22-01510 (R12/01)
COE Lamp Cluster
When you turn on your ignition, the following will turn on for 3 - 5 sec-
onds, as a test to let you know they are working.
LAMPS:
•Diff Lock •Low Water
•Water Temp •Left Turn
•Mirror Heat •Load Light
•Brake Air •High Beam
•Fifth Wheel •Right Turn
•Oil Pressure •Engine Fan
•ABS •Airbag System Warning Light
•Trailer ABS
BUZZER: The warning buzzer sounds to let you know some of the
systems are working.
OPTIONAL LAMPS: Additional lamps may be operational depending
on how the truck is equipped. These will also turn on for three sec-
onds as a test to let you know they are working (see ABS lamp infor-
mation on page 93). After this self-test period, the module operates
normally.
The warning lights and buzzer may indicate something is wrong with
one of the vital systems on your vehicle. Check the lights frequently,
and respond properly as soon as you see one go on. These lights
could save you from a serious accident.
WARNING! Ignoring a warning light could lead to an
accident. These signals tell you something is wrong
with your vehicle. It could be a failure in an important
system, such as the brakes. Never ignore a warning
signal. Have the appropriate system checked right
away.
CHECK
STATUS
LOWLOW
WATER AIR
DIFF
LOCK
ABS
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —55— 22-01510 (R12/01)
Transmission Temperature Gauge
Your Transmission Temperature Gauge indicates the temperature of
the oil in your transmission. Watch this gauge to know when your
transmission is overheating. If it is, have it checked by an authorized
service representative.
Maximum transmission temperature may vary, depending upon the
transmission and type of lubricant. Check your transmission’s
owner’s manual.
Forward Drive Axle Temperature Gauge
Rear Drive Axle Temperature Gauge
These gauges indicate the temperature of the lubricant in your vehi-
cle’s axle(s). These temperatures will vary with the kind of load you
are carrying and the driving conditions you encounter. Maximum axle
temperature may vary, depending upon the axle and type of lubricant.
Very high temperatures signal a need to have your axle(s)’ lubrication
checked.
CAUTION: Driving with very hot temperatures in your
rear drive axles can cause serious damage to axle bear-
ings and seals. Have your axle lubrication checked if
you notice a sign of overheating.
02993
02994
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —56— 22-01510 (R12/01)
Manifold Pressure Gauge
Your manifold pressure gauge indicates the power your engine is put-
ting out by showing the amount of turbo boost. If the pressure indi-
cated by your manifold pressure gauge goes down, there may be
something wrong with your engine. Have it checked by a qualified
service person.
Pyrometer
The pyrometer gauge indicates engine exhaust gas temperature.
Since it responds almost immediately to changes in exhaust gas tem-
perature, the pyrometer is an excellent indicator of engine output.
Monitor it in conjunction with the tachometer and manifold pressure
gauge. The pyrometer can be a useful aid to operating your truck
more efficiently and avoiding sudden changes in engine operating
temperature. See your engine owner’s manual for maximum temper-
ature recommendations.
Ammeter
Your ammeter tells you whether your electrical system is “in balance”
and operating normally. If not, it may be drawing power from the
alternator (positive reading) or from the batteries (negative reading).
NOTE: Under normal conditions the ammeter will read nearly
“zero.” If it begins to read noticeably above or below the “zero”
balance point, have the system checked out immediately. If you
do not, you could have a roadside breakdown.
02995
02996
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —57— 22-01510 (R12/01)
Air Filter Restriction Indicator or Gauge
This gauge indicates the condition of the engine air cleaner and is
measured by inches of water (H2O). A clean filter should register 7”
H2O (may vary with system design) and a filter whose life is over will
register approximately 25” H2O.
Shift Pattern Display
The correct shift pattern for your vehicle appears on your control
panel or windshield or on a medallion in the shift knob. It is important
that you know more about your transmission than just the shift pat-
tern. Please read the manufacturer’s manual that is included with
your vehicle.
Mirrors
Your vehicle is equipped with outside mirrors to enable you to see to
the sides and behind your vehicle. Be sure they are adjusted prop-
erly before you drive off. You will have the best field of view to the
side if you adjust each mirror so you can just see the side of your
vehicle in the inboard part of the mirror.
CAUTION: Continued operation with the Air Filter
Restriction Gauge reading 25” H
2
O may cause damage
to the engine. Inspect the filter and replace if neces-
sary. Holes in the paper element render an air cleaner
useless and may cause the Air Filter Restriction Gauge
to give a false reading, even if the element is clogged.
Replace the element if it is damaged.
WARNING! Optional convex outside rear view mirrors
make objects appear smaller and farther away than they
really are. You could have an accident if you were too
close to another vehicle or other object. Keep plenty of
space between your vehicle and others when you turn
or change lanes. Remember that other objects are
closer than they seem.
02997
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —58— 22-01510 (R12/01)
Luggage Compartment(s)
An interior luggage compartment is under the bunk in the Conven-
tional sleeper. The exterior compartment is beneath the bunk, open-
ing from the driver’s side, on the outside of the cab.
Appliances in the Cab
You may decide to equip your vehicle with a radio, a refrigerator, or
other appliances and conveniences. Be sure they are compatible
with your truck’s electrical system. Secure them in the cab so they
can’t fly loose in a sudden stop.
UltraSleeper Table
Follow the procedure below to deploy the table in an UltraSleeper.
1. Pull on the leg loop (see Illustration) until the leg snaps open.
WARNING! Carrying objects loose in your cab or
sleeper can be dangerous. In a sudden stop, or even
going over a bad bump, they could fly forward and
strike you or a passenger, possibly causing serious
injury. Secure loose objects. Carry any heavy objects in
the exterior luggage compartment and close it securely.
WARNING! In a sudden stop or collision a heavy object
in your cab could strike you or anyone with you. You
could be injured or even killed. Secure any appliance
(such as a refrigerator or radio) you add to your cab.
BUNK-UP BELT
LEFT HAND SOFA
BACKREST
RIGHT HAND
SOFA CUSHION
LEFT HAND
BUNK GAS SPRING
CUPHOLDER
TRAY
BUNK TABLE LATCH
BUNK TABLE
RIGHT SIDEWALL
CABINET
SOFA
SEATBELTS
LOWER REAR WALL
UPHOLSTERY PANEL
BUNK
(STOWED)
SLEEPER WALKTHROUGH
OPENING
BUNK END TRAY
BUNK DOWN STOP HOOP
LEFT HAND
SOFA CUSHION
LEFT HAND
BUNK PIVOT
BRACKET
LEG LOOP
LEG
LEG SUPPORT
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —59— 22-01510 (R12/01)
2. Raise the bunk table latch and pull the table away from the bunk.
3. Lower the table and guide the leg into the leg support, which is
bolted to the door jamb of the through-compartment access door
(see previous illustration).
Follow the procedure below to stow the table.
1. Lift the table.
2. Raise the bunk table latch and stow the table completely in the
recess in the bunk.
3. Lower the bunk table latch and snap the table leg in place.
UltraSleeper Refrigerator
Follow the procedure below to operate the refrigerator.
The main power supply to the refrigerator and cooling fan (located
behind the refrigerator) is controlled by a switch labeled "REFRIG/
FAN" located on the sleeper control panel.
•To turn the refrigerator and cooling fan on, move the REFRIG/FAN
switch to ON, then turn the thermostat dial (located inside the
refrigerator) clockwise from the OFF setting.
•To turn the refrigerator and cooling fan off, turn the thermostat dial
inside the refrigerator counterclockwise to the OFF setting, then
move the REFRIG/FAN switch to OFF.
•To turn only the refrigerator off, turn the thermostat dial counter-
clockwise to OFF.
CAUTION: To avoid possible damage or injury from an
unrestrained table, ensure that the table is latched when
in the stowed position.
NOTE:
•
For additional information about the refrigerator, refer to
the refrigerator owner’s manual that came with this appli-
ance.
•
During periods of extended refrigerator use, it may be
necessary to run the engine to avoid excess drain on the
vehicle’s batteries.
•
Refrigerator cooling ability decreases as sleeper temper-
ature increases.
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —60— 22-01510 (R12/01)
UltraSleeper Bunk
Follow the procedure below to deploy the bunk in an UltraSleeper.
1. Unlatch the bunk-up belt (see previous illustration) and pull the
bunk forward. The bunk will swing down and come to rest in a hor-
izontal position.
2. Latch the bunk in the down position. Ensure the bunk latch
engages. If the bunk latch doesn’t properly engage the down stop
bracket hoop as shown below, or if there is too much play between
latch & hoop, have the latch adjusted by a Peterbilt dealer.
3. Attach the bunk restraint end buckles to the bunk restraint tongues.
CAUTION: To avoid possible damage, do the following
before deploying the bunk:
•
Ensure that the table is latched in the stowed position
and that the right sidewall cabinet door is latched
closed (see previous illustration).
•
Remove all items from the center cupholder tray, bunk
down stop tray, and sofa cushions (see previous illus-
tration).
•
Place sofa seatbelts flat on the cushions or stow them
under the cushions.
•
Remove and stow the left-hand sofa backrest (see pre-
vious illustration).
NOTE: Bunk upswing and downswing will be assisted and
dampened, respectively, by the bunk gas springs. The
amount of assistance and dampening will vary with sleeper
temperature: these amounts are reduced in colder tempera-
tures and increased in warmer temperatures.
BUNK RESTRAINT
TONGUE
LATCH
HOOP
THUMB LEVER
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —61— 22-01510 (R12/01)
The UltraSleeper bunk restraint is attached to the sleeper in three
locations (see illustration below):
•The bunk front: Access to the bunk is easiest when one or both of
the bunk restraint (buckle) ends are detatched from the bunk
restraint tongues.
•The roofbow: The roofbow-mounted tether straps are adjustable
so that the restraint may be tightened up when fully deployed.
•The upper rear wall: The restraint is attached to the upper rear
wall by two removeable mounting bolts.
Upper Rear Wall
Roofbow
Bunk Front
PART 4: CONTROLS AND DISPLAYS
PB1317 (CAT. NO. 5229 ) —62— 22-01510 (R12/01)
Follow the procedure below to stow the bunk in an UltraSleeper.
1. (Optional) Detach the bunk restraint end buckles from the bunk
restraint tongues.
2. Push in on the thumb lever of the bunk down latch to release the
bunk.
3. Lift up the bunk and swing it up to a vertical stowed position.
4. Latch the bunk-up belt. If the bunk leans forward when stowed,
have the belt adjusted or the gas springs serviced by a Peterbilt
dealer.
CAUTION: To avoid damage, do the following before
stowing the bunk:
•
Ensure that the right sidewall cabinet door is latched
closed.
•
Remove all items from the top of the bunk mattress,
and arrange bedding so that items will not slide down
the mattress and fall behind the bunk.
NOTE: If the restraint is left unattached from the roofbow
and bunk restraint tongues, then it may get pinched behind
the pivoting bunk and the rear wall of the sleeper when the
bunk is stowed. If this happens, unbuckle the bunk-up belt
and rotate the bunk open just enough to reach behind the
bunk. Free the restraint net, then rotate the bunk fully down.
WARNING! To avoid possible damage or injury from an
unrestrained bunk, always latch the bunk-up belt when
the bunk is stowed.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —63— 22-01510 (R12/01)
Seat
For information on the features and adjustment of the seat, see the
seat manufacturer’s literature included with the vehicle.
Seat Belts And Their Proper Use
Seat (or safety) belts have proven to be the single most effective
means available for reducing the risk of serious injury and death in
motor vehicle accidents. It’s not just an opinion -- it’s a fact: Seat
belts save lives.
Person In Crash, Unbelted
WARNING! Do not drive or ride with your seat back in the
reclined position. You could be injured by sliding under the
seat belts in a collision.
WARNING! Do not adjust the driver’s seat while the
vehicle is moving. The seat could move suddenly and
unexpectedly and can cause you to lose control of the
vehicle. Make all adjustments to the seat while the vehi-
cle is stopped. After adjusting the seat and before driv-
ing off, ensure that the seat is firmly latched in position.
WARNING! Do not drive vehicle without your seat belt
and your riders’ belt fastened. Riding without a safety
belt properly fastened can lead to increased injury or
death in an emergency. Unbelted riders could be thrown
into the windshield or other parts of the cab or could be
thrown out of the cab. They could strike another person.
Injuries can be much worse when riders are unbelted.
Always fasten your seat belt
02998
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —64— 22-01510 (R12/01)
Shoulder Belt
Your combination shoulder-lap belt needs proper adjustment:
•The lap portion should be worn as low on the hips as possible.
Properly worn belt Improperly worn belt
•The shoulder portion should fit snugly across your body. It should
always be worn over the shoulder next to the door. It you put the
belt under your arm, it can’t protect you properly.
Correct (over arm) Incorrect (under arm)
WARNING! You can be seriously injured if your belt is
buckled too high. In a crash, it would apply force to
your abdomen, not your pelvic bones. This could cause
serious internal injuries. Always wear your seat belt low
over your pelvic bones.
02928
02929
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —65— 22-01510 (R12/01)
•Be sure, also, that your belt is not too loose. A loose belt could
allow you to slide under it in an accident, and that could bring the
belt up around your abdomen.
•Watch that you don’t twist the belt in the process of putting it on. A
twisted belt won’t work as well to protect you.
Twisted Belt
To connect your shoulder-lap belt: Grasp the belt tongue and pull
in a smooth, slow motion across your chest and lap. Insert the
tongue into the buckle on the inboard side of the seat. Push down
until you hear a click. Pull on the belt to make sure it is buckled.
Check that it is positioned correctly on your body.
WARNING! Wearing the shoulder belt under your arm
could lead to serious injury. In a crash your body would
move too far forward, increasing the chance of head and
neck injury. And the belt would apply too much force to
the ribs, which aren’t as strong as your shoulder bones.
You could also suffer internal injuries. Wear the shoul-
der belt over your shoulder.
WARNING! A too-loose seat belt can lead to injury in a
crash. It can allow you to fall too far forward, possibly
causing head and neck injuries. You could strike the
wheel or the windshield. Adjust your belt so that there
is no more than one inch (25 mm) of slack.
WARNING! You could be seriously injured by a twisted
belt. In a crash, the full width of the belt wouldn’t be
protecting you. And the twisted belt could cut into your
body. Straighten the belt before buckling it. If you can’t,
have your dealer or service person fix it.
02930
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —66— 22-01510 (R12/01)
Komfort-Lok® Feature
Your Peterbilt contains a feature designed to eliminate cinching and
provide improved safety and comfort. Cinching is the condition where
a belt becomes continually tighter around you during a rough, bouncy
ride. The need for this feature increases with rough road conditions,
particularly over long distances.
To eliminate cinching simply activate the Komfort-Lok feature at the
appropriate time:
1. Fasten your seat belt according to the directions above.
2. You are now ready to activate the Komfort-Lok. Lean forward to
pull a little slack (about 1 inch) in the belt. Be sure to allow only a
small amount of slack. See the Warning on a loose belt, on the
previous page.
Komfort-Lok®
3. When the slack is right, flip the latch cover up, cinching it into
place. This locks the Komfort-Lok.
4. To release the Komfort-Lok latch, reach up and pull the latch cover
open (down), or simply pull down on the shoulder belt.
5. When you want to get out of the cab, release the latch, then just
push the button on the buckle.
02931
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —67— 22-01510 (R12/01)
Pregnant Women: Sometimes pregnant women worry that in a crash
the seat belt could hurt the baby. But if a woman wears her belt prop-
erly - low over her pelvis, below her abdomen - the belt won’t harm
the baby, even in a crash. And remember - the best way to keep an
unborn baby safe is to keep the mother safe.
Pregnant Woman With Belt Properly Worn
Sleeper Bunk Restraints
If your cab is equipped with a sleeper, be sure to use the restraint
device. You may have belts which either are over the bunk or cover
the opening. Of course, you do not need to use a restraint if you
sleep in a parked vehicle. But anyone using the sleeper while the
truck is in motion should be restrained in a safety device.
You will notice that if your Peterbilt has an upper bunk, it has no
restraint device. This is because no one should ever be in an upper
bunk when the vehicle is moving.
Passengers
Anyone riding in your vehicle should wear a seat belt. The responsi-
ble operator sees to it that everyone in the vehicle rides safely - and
that means with a seat belt.
WARNING!
•
In an accident an unrestrained person lying in a sleeper
bunk could be seriously injured. He or she could be
thrown from the bunk. Be sure anyone occupying the
sleeper is restrained while a vehicle is moving.
•
Be sure that no one ever rides in the upper bunk. That
person would be thrown out in an accident and could
be very seriously injured.
02932A
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —68— 22-01510 (R12/01)
Some Other Safety Restraint Tips:
•Don’t wear belts over rigid or breakable objects in or on your cloth-
ing. Such things might be eyeglasses, pens, keys, etc. These
could cause injury in an accident.
•Damaged belts in the cab or sleeper must be replaced. Belts that
have been stretched, cut, or worn out may not protect you in an
accident.
•Avoid catching belts in the doors or seat hardware. They could be
damaged.
•Don’t modify or disassemble the seat belts in your vehicle. They
won’t be available to keep you and your passengers safe.
•Never bleach or dye seat belts; chemicals can weaken them. Do,
however, keep them clean by following the care label on the belts.
Let them dry completely before allowing them to retract.
•If any seat belt is not working properly, see an authorized Peterbilt
dealer for repair or replacement.
Tether Belts
Tether belts are installed on suspension seats. They help secure the
seat to the floor to restrain it in case of a sudden stop or an accident.
Tether Adjustment
•Make sure the tether belt is attached to the cab deck and seat
frame. It should be routed through the buckle on each side.
•To lengthen the tether, turn the buckle to a right angle to the web-
bing. Then pull the buckle. To shorten the tether, pull on the strap.
WARNING! Do not remove, modify, or replace the tether
belt system with a different tether system. A failed or miss-
ing tether belt could allow a seat base to fully extend in the
event of an accident leading to greater injuries or death.
WARNING! Failure to adjust tether belts properly can
cause excessive movement of the seat in an accident.
This could lead to greater injuries for you. Tether belts
should be adjusted so that they are taut when the seat is
in its most upward and forward position.
WARNING! Before driving or riding in a vehicle, ensure
that there is adequate head clearance at maximum
upward travel of seat. Serious injury may occur if head
clearance is not adequate. Shorten the tether belt as
necessary to provide adequate head clearance.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —69— 22-01510 (R12/01)
Inspection of the Restraint System
The typical three-point seat systems in passenger cars may seem
very similar to the three-point seat belt system in heavy duty vehicles,
but there are some key differences that all users of this system should
be aware of:
•In typical passenger vehicle automotive seat belt applications, the
normal life of the vehicles is usually 8 to 10 years and the total
mileage frequently does not exceed 125,000 miles (200,000 km).
Heavy duty vehicles often see this type of mileage in a very short
period of time, and accumulation of mileage in excess of 500,000
miles (800,000 km) during the vehicle lifetime is not unusual.
•A significant difference in the two systems is the amount of move-
ment of webbing in the system. In an automotive application,
there is little movement of the seat belt system, except when the
user puts on or takes off the belt. In trucks, however, there is
almost constant movement of the belt through hardware due to
ride characteristics and seats which are designed to move, in
order to enhance driver comfort. There can even be movement of
the webbing in the seat belt system when the belt in not being
used. Relative movement between the seat and the cab, which
normally occurs whenever the truck is in operation, can cause
wear of the seat belt webbing.
•Environmental conditions represent another major difference in
the systems in automobiles and heavy duty and specialty vehicles.
Unlike the automotive environment, heavy duty and specialty vehi-
cles may be very dirty, and have more exposure to the Sun’s dam-
aging ultraviolet rays, thus resulting in a reduction of the life of the
seat belt system.
The high mileage associated with heavy duty vehicles and possible
wear of the 3-point seat belt system, the continual relative movement
of the system, the possible contact with the vehicle seat or other parts
of the cab structure, and the potential exposure of this system to
severe environmental conditions make it crucial to inspect the three-
point seat belt systems regularly. It is recommended that the seat belt
system in a vehicle be inspected every 20,000 miles (32,000 km) or
more often if the vehicle is exposed to severe environmental condi-
tions. Any seat belt system that shows cuts, fraying, extreme or
unusual wear, significant discoloration due to UV exposure, abrasion
to the seat belt webbing, or damage to the buckle, latch plate, retrac-
tor hardware or any other obvious problem should be replaced imme-
diately, regardless of mileage.
WARNING! Failure to properly inspect and maintain
restraint systems can lead to serious injury or loss of
life. Without periodic inspection and maintenance to
detect unsafe conditions, seat restraint components
can wear out or not protect you in an accident.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —70— 22-01510 (R12/01)
One of the most critical areas to be inspected is the seat belt web-
bing. Constant movement of the belt actually means the webbing is
experiencing wear as it travels in and out of the retractor, through the
pillar loop web guide and through the various pieces of hardware
associated with the belt. The following guidelines detail how to
inspect for cuts, fraying, extreme or unusual wear of the webbing, etc.
and damage to the buckle, retractor, hardware, or other factors which
indicate that belt replacement is necessary.
1. Check the web wear in the system. The webbing must be closely
examined to determine if it is coming into contact with any sharp or
rough surfaces on the seat or other parts of the cab interior.
These areas are typical places where the web will experience cut-
ting or abrasion. Cuts, fraying, or excessive wear would indicate
the need for replacement of the seat belt system.
2. The D-loop web guide is the area where almost constant move-
ment of the seat belt webbing occurs because of relative move-
ment between the seat and the cab.
WARNING! It is important to remember that any time a
vehicle is involved in an accident, the entire seat belt
system must be replaced. Unexposed damage caused
by the stress of an accident could prevent the system
from functioning properly the next time it is needed,
which could result in severe injury or even death.
03004
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —71— 22-01510 (R12/01)
3. Check the Komfort Latch™ for cracks or possible damage and that
it works properly.
4. Check the buckle and latch for proper operation and to determine
if the latch plate is worn, deformed, or damaged.
5. Inspect the retractor web storage device, that is mounted on the
floor or B-pillar of the vehicle for damage. The retractor is the
heart of the occupant restraint system and can often be damaged
if abused, even unintentionally. Check retractor web storage
device operation to ensure that it is not locked up and that it spools
out and retracts webbing properly.
6. If adjustable tethers are being used, be sure they are adjusted in
accordance with installation instructions. Tethers must also be
inspected for web wear, just as with the seat belt systems.
7. Mounting hardware should be evaluated for corrosion, and for
tightness of bolts and nuts.
8. Check web in areas exposed to ultraviolet rays from the sun. If the
color of the web in these areas is gray to light brown, the physical
strength of this web may have deteriorated due to exposure to the
sun’s ultraviolet rays; replace the system.
If the inspection indicates that any part of the seat belt system
requires replacement, the entire system must be replaced, both
retractor and buckle side. An installation guide is attached to every
replacement belt. This set of instructions is entitled “
THREE-POINT
SEAT BELT INSTALLATION GUIDE.”
There are separate seat belt
instruction guides for suspension and fixed bench seats. Use the
proper guide for your type of seat, and follow the instructions very
closely. It is vitally important that all components must be remounted
back in the same position as the original components that were
removed. This will maintain the design integrity of the mounting
points for the seat belt assembly.
Once the need for replacement of the seat belt has been determined,
be certain that it is only replaced with the recommended replacement
seat belt. The occupant restraint system has been developed and
tested specifically for this vehicle. If the vehicle was originally
equipped with a lap belt, it cannot be replaced with a three-point
shoulder harness system, because the cab mounting points are not
structurally designed for a three-point seat belt.
WARNING! Failure to adjust tether belts properly can
cause excessive movement of the seat in an accident.
This could lead to greater injuries for you. Tether belts
should be adjusted so that they are taut when the seat is
in its most upward and forward position.
WARNING! Replace the entire belt system (retractor and
buckle side) if replacement of any one part is necessary.
Unexposed damage to one or more components could pre-
vent the system from functioning properly the next time it is
needed, which could result in severe injury or even death.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —72— 22-01510 (R12/01)
Airbag System
General Information
Your vehicle may be equipped with a driver-side airbag system, other-
wise known as a Supplemental Restraint System (SRS). The driver’s
airbag provides supplemental protection to the standard 3-point seat
belt assembly in a severe frontal collision. For maximum safety, ALL
occupants should always wear their seat belts whether or not an air-
bag is provided at their seating position to minimize the risk of severe
injury or death in the event of a crash.
A properly worn seat belt is
your best protection in any collision .
The airbag system is designed to deploy during severe frontal or
head-on collisions, where the vehicle collides with an object severe
enough to warrant airbag protection. Less severe frontal collisions,
collisions from the rear, side, or rollover accidents may not activate
the system. This is normal and does not mean the airbag is faulty.
WARNING!
•
Always wear your seat belt. Relying on the driver air-
bag alone could lead to more severe injuries in a colli-
sion. The airbag supplements your seat belt to
provide proper occupant restraint.
•
Do not place objects, accessory equipment or stickers
on or near the airbag module on the steering wheel.
Any such objects could increase the risk of personal
injury if the vehicle is in a collision severe enough for
the airbag to inflate or could prevent the module from
deploying properly.
•
Being too close to the steering wheel during airbag
deployment could cause possible injury. Airbags need
room to inflate. For the best protection
-fasten your seat belt
-sit in a normal upright position
-comfortably extend your arms to reach the steering
wheel
CAUTION: If the airbag system warning light
stays on, doesn’t come on when you start your
vehicle, or comes on while driving the vehicle,
take your vehicle to the nearest Peterbilt dealer for ser-
vice immediately! The airbag system may have a fault
that will render the system inoperable.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —73— 22-01510 (R12/01)
Airbag System/SRS Description
The airbag system is made up of several components within the cab
including
•Airbag module - mounted to center of steering wheel
•Sensor/Control system - on the floor aft of the driver seat
•Airbag (SRS) system warning light in the light bar
•Various electrical wiring harnesses and connectors
•Seat belts
Airbag Module
The driver airbag module is located in the center of the steering wheel
and inflates in the event of a serious frontal collision. The module has
the letters “SRS” embossed into it.
The angle of impact of the collision, crash severity, and type of object
impacted play a part in whether the airbag system deploys or not.
The driver airbag module is used as a supplement to the seat belt
restraint system. The function of the airbag is to inflate at a precise
calibrated vehicle deceleration level, typically found in higher speed
frontal impacts, to provide supplemental protection for the driver. In
collisions where the airbag does deploy, the seat belt is needed to
help keep the driver in the correct position for the airbag to provide
proper protection. The ignition must be on for the airbag to deploy.
CAUTION: The airbag module must be replaced by an
authorized Peterbilt dealer every 10 years from the air-
bag’s date of installation. Failure to replace the airbag
module could result in nondeployment or insufficient
deployment.
27884
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —74— 22-01510 (R12/01)
Sensor/Control Unit
The sensor/control unit is mounted on the floor of the vehicle behind
the driver seat. It detects the rate of deceleration and monitors sys-
tem function. The control unit has a single point electronic crash sen-
sor. The sensor monitors the crash direction and severity of the
impact. When the crash sensor detects an impact severe enough to
require the airbag, it activates the inflator. A non-toxic argon gas is
released to inflate the airbag cushion at the proper time. The airbag
module trim cover rotates out of the way from the force of the inflating
bag as the cushion reaches full size. The cushion inflates, then
deflates by venting the argon gas through the airbag fabric. All this
occurs in approximately one second.
Airbag (SRS) System Warning Light
There is an airbag system warning light in the warning light bar in the
dash. The system performs self-diagnostics during vehicle start-up.
The light will flash for approximately 5 seconds when the ignition is
turned to the "RUN” or "START" position. When the system is operat-
ing correctly, the light will go out after 5 seconds.
Airbag Electrical Components
CAUTION: If the airbag system warning light
stays on, doesn’t come on when you start your
vehicle, or comes on while driving the vehicle,
take your vehicle to the nearest Peterbilt dealer for ser-
vice immediately! The airbag system may have a fault
that will render the system inoperable.
WARNING! Do not attempt to repair, probe, or splice
any part of the air bag system. Modifications or repairs
to any part of the airbag system could result in system
failure or sudden, inadvertent deployment of the airbag
module and could result in possible injury. One of the
components for the airbag electrical system is a clock
spring harness located in the hub of the steering col-
umn. Repair work should only be performed by an
authorized Peterbilt dealer.
PART 5: SEAT AND RESTRAINT SYSTEMS
PB1317 (CAT. NO. 5229 ) —75— 22-01510 (R12/01)
To connect the airbag module, sensor/control system, and the airbag
warning light, numerous electrical connectors and harnesses are
installed in the vehicle. They can be identified by a yellow covering.
There are no serviceable components in the airbag system.
When
working on the vehicle’s electrical system, ensure
that no damage is
done to the SRS electrical components as it may prevent the airbag
system from operating properly or may cause it to inadvertently deploy.
If an Airbag Deployment Occurs
Vehicle Operation or Modification
The SRS sensing unit installed in your vehicle is calibrated for a spe-
cific cab and sleeper combination vehicle and designated for on-high-
way operation/service. Any change from the vehicle’s original cab and
sleeper combination or operation can cause the airbag not to perform
or function properly as originally designed. If your vehicle was built
with a sleeper unit, the sleeper unit must not be removed. If it is nec-
essary to remove the sleeper and operate the vehicle, the SRS sys-
tem must be deactivated by an authorized Peterbilt dealer.
CAUTION: Do not remove any steering driveline compo-
nent. If removal of any steering component occurs, the
clock spring harness can be damaged resulting in
expensive repairs or system failure. Any repair or
replacement of steering gear, steering shaft, steering
column, or steering wheel must be done by an autho-
rized Peterbilt dealer.
WARNING!
•
The airbag inflator becomes hot during deployment. To
avoid burns immediately after a deployment, do not
place any part of your body on the steering wheel hub.
•
Never attempt to drive your vehicle if the airbag has
deployed. Have your vehicle towed to an authorized
Peterbilt dealer anytime the airbag deploys and have
the dealer replace the airbag module and check the
entire system. The vehicle may not be safe to steer and
the system can no longer provide proper protection.
CAUTION: If a collision causes the airbag to deploy, the
nylon airbag cushion material may cause abrasions
and/or skin reddening to the driver as the airbag
deploys and unfolds itself from the steering wheel. The
abrasions are similar to friction rope, carpet, or floor
burns. They are not caused by contact with chemicals.
They are not permanent and normally heal quickly.
However, if the affected areas blister, or have not healed
within a few days, consult your doctor.
PART 6: DRIVER’S CHECKLIST
PB1317 (CAT. NO. 5229 ) —76— 22-01510 (R12/01)
To keep your vehicle in top shape, and to maintain its high level of
safety for you, your passengers, and your load, make a thorough
inspection every day before you drive. You’ll save maintenance time
later -- and the safety checks could help prevent a serious accident.
Please remember, too, that Federal law requires a pre-trip inspection
and so do commercial trucking companies.
For more information, you can refer to Federal Motor Carrier Safety
Regulation 392.7 which tells you that interstate commercial motor
vehicles are not to be driven unless the driver is sure that certain
parts and accessories are in working order.
You aren’t expected to become a professional mechanic. The pur-
pose of your inspections is to find anything that might interfere with
the safe and efficient transportation of yourself and your load. If you
do find something wrong and can’t fix it yourself, please have a quali-
fied mechanic fix it right away.
Safe Vehicle Operation
For your safety, as well as those around you, be a responsible driver:
•If you drink, do not drive.
•Do not drive if you are tired, ill, or under emotional stress.
Much has gone into the manufacturing of your Peterbilt, including
advanced engineering techniques, rigid quality control, and demand-
ing inspections. These manufacturing processes will be enhanced by
you—the safe driver—who observes the following:
•knows & understands how to operate a vehicle and all its controls
•maintains the vehicle properly
•uses driving skills wisely
WARNING! Do not drink and drive. Your reflexes, percep-
tions, and judgment can be affected by even a small
amount of alcohol. You could have a serious—or even fatal
accident—if you drive after drinking. Please do not drink
and drive or ride with a driver who has been drinking.
The use of alcohol, drugs, and certain medications will seri-
ously impair perception, reactions, and driving ability.
These circumstances can substantially increase the risk of
an accident and personal injury.
PART 6: DRIVER’S CHECKLIST
PB1317 (CAT. NO. 5229 ) —77— 22-01510 (R12/01)
The daily checks listed below are the foundation of your overall pre-
ventive maintenance program. See PART 8: MAINTENANCE AND
SERVICE for the complete preventive maintenance schedule for your
vehicle.
Approaching the Vehicle
1. Check the overall appearance and condition. Are windows, mir-
rors, and lights clean and unobstructed?
2. Check beneath the vehicle. Are there signs of fuel, oil, or water
leaks?
3. Check for damaged, loose, or missing parts. Are there parts
showing signs of excessive wear or lack of lubrication? Have a
qualified mechanic examine any questionable items and repair
them without delay.
Checking Under the Hood or Cab
With the engine stopped:
1. Check the engine oil level; top up as necessary. Refer to your
engine’s operating manual for the type of oil to use.
2. Check the engine coolant level while the engine is cold. Top up as
necessary with premixed coolant. Refer to the instructions on
page 160 for adding coolant to the proper level.
3. Check the engine belts. Refer to the instructions on page 160 to
check belt condition and adjust tension.
4. Check brake lines and hoses.
5. Check all other accessories, controls, belts, hoses, and wiring for
condition and adjustment.
6. Check the windshield washer fluid level; top up as necessary
(Conventional).
7. Check the power steering fluid reservoir; top up as necessary.
8. Check the steering components (pitman arm; draglink; power
steering hoses, etc.)
9. Drain the fuel/water separator.
Checking the Luggage Compartment
1. Check the fire extinguisher charge.
2. Check the road emergency kit. Is it complete?
3. Check the windshield washer fluid level; Top up as necessary
(COE).
PART 6: DRIVER’S CHECKLIST
PB1317 (CAT. NO. 5229 ) —78— 22-01510 (R12/01)
Checking Outside the Vehicle
1. Be sure all wheel studs and cap nuts are secure. Check wheel
cap nut torque weekly; refer to the instructions on page 152.
2. Check tires for condition and proper inflation.
3. Check the front wheel bearing lube level.
4. Check parking (spring) brakes as to the condition and tightness of
air lines, breathers, clamp rings & bolts, mounting studs, and
release bolts.
5. Check turn signal operation.
6. Check emergency flashers and exterior lamps.
7. Check the fuel tanks. Is there enough fuel? Are the tank caps
secure?
8. Visually inspect the fuel tank mounting hardware. Are the tank
straps tight? Is the webbing in place?
9. If equipped with fuel tank steps: are they damaged or broken? Is
the grommet/windlace in place between the tank and side plate?
Are bolts missing or loose?
10.Check the air cleaner and muffler(s). Are they tight and secure?
11.Check the trailer connections. Are they secure and the lines
clear? If they are not being used, are they stored properly?
12. Is the trailer spare wheel secure? Inflated?
13.Is the landing gear up and the handle secured?
14.Check the 5th wheel. Is the kingpin locked?
15. Is the sliding 5th wheel locked?
16.Check for loose or missing suspension fasteners.
17. Check springs or other suspension parts for damage such as
cracks, gouges, distortions, bulges, or chafing.
18.Check the air system. Are there leaks?
WARNING!
•
Diesel fuel in the presence of an ignition source (such as
a cigarette) could cause an explosion. You could be seri-
ously injured. A mixture of gasoline or alcohol with diesel
fuel increases this risk of explosion.
Use only the fuel
recommended for your engine.
•
Hot fuel vapors are combustible and can cause an
explosion or fire resulting in injury or death. Do not
remove a fuel tank cap near an open flame.
PART 6: DRIVER’S CHECKLIST
PB1317 (CAT. NO. 5229 ) —79— 22-01510 (R12/01)
19.Drain excess moisture from all air supply tanks. Make sure the
drain cocks are closed. This procedure is also required for air sup-
ply tanks equipped with automatic drain valves.
20.Check that cab latch or hood hold-downs are hooked.
In - Cab Checklist
1. Adjust the seats.
2. Fasten and adjust safety restraint belts. (See PART 5: SEAT AND
RESTRAINT SYSTEMS or the Index, under Restraint
Systems 63.)
3. Sleeper Restraints: Check and inspect condition. (See PA RT 5:
SEAT AND RESTRAINT SYSTEMS or the Index, under Restraint
Systems 63.)
4. Adjust the steering column.
5. Check mirror adjustment.
6. Operate air-powered devices to circulate lubricants.
After Engine Warmup
Check automatic transmission oil (if equipped).
Superintendent of Documents
U.S. Government Printing Office
Washington, DC 20402
CAUTION: To avoid injury while entering or leaving the
cab, keep your feet in contact with the steps and your
hands on the handhold. Always have three points of
contact as you enter or exit a cab. See PART 2: GET-
TING INTO AND OUT OF THE CAB AND FRAME
ACCESS of this manual for more information.
NOTE: The above items should be checked daily, as a min-
imum. They are in addition to, not in place of Federal
Motor Carrier Safety Regulations. These may be purchased
by writing to:
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —80— 22-01510 (R12/01)
Since each vehicle is custom-equipped, all engine operation instruc-
tions in this manual are general. You will want to consult the manual
for your engine to find out details about your specific engine’s needs.
You may need to use a slightly different procedure from the one out-
lined here.
Also check the ATA Truck Driver’s Handbook in your glove box. It will
give you tips on starting, shifting, and driving a truck.
Below are instructions for both normal-temperature starting and cold-
weather starting.
Normal Temperature Starting Procedure
When the outside temperature is above 50° F (10° C), you can use
the following procedure.
1. Set the parking brake.
2. Put your main transmission in Neutral.
3. Disengage (depress) the clutch (with manual transmission).
4. Turn the key switch to ON.
•If your vehicle is equipped with a digital message center (DMC),
the DMC display will come on in the “Clock” mode.
5. Press the starter button.
If the engine does not start within 30 seconds, release the starter but-
ton. To avoid overtaxing the starter motor or the batteries, don’t use
the starter for more than 30 seconds. Let the starter motor cool and
the batteries recover for two minutes before trying again.
If the engine still won’t start after a couple of tries, check the manual
override shutdown valve and fuel lines for possible fuel starvation or
air leaks. Starting failure may mean fuel isn’t reaching the injectors.
6. As soon as the engine starts, begin to watch the oil pressure
gauge. Check your engine manufacturer’s manual for the right
pressure for your engine. If the oil pressure doesn’t rise within a
few seconds, stop the engine. Find out what is wrong before
restarting the engine.
7. Slowly engage (release) the clutch after the engine has started.
CAUTION: Never operate the starter motor while the
engine is running. The starter and flywheel gears could
clash or jam, severely damaging them.
NOTE: Some starters are equipped with overcrank protection.
Check the “Engine Operation and Maintenance Manual” for
details.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —81— 22-01510 (R12/01)
8. Wait until normal engine oil pressure registers on the gauge before
idling or accelerating the engine beyond 1000 RPM.
Cold Temperature Starting Procedure
In cold weather, fast engine starting helps relieve the loads on the
electrical system and cranking motor. Using the special cold starting
equipment will help starting. If you follow a few simple guidelines, you
will extend the service life of your engine.
•Keep the electrical system in top condition.
•Use the best quality fuel of the recommended grade.
•Use recommended engine lubricating oil.
Ether Metering Equipment
NOTE: If your vehicle has a DDC engine, and if it has not
been started for more than 30 days, squirt about half a cup
(120 ml) of clean, specified engine oil into the turbocharger
oil inlet port. Use an oil can. This will keep the turbocharger
bearings lubricated until the engine oil pressure gets up to
normal.
WARNING! The fluid in ether starting systems is
extremely flammable and poisonous. If ignited, it could
burn you badly. If you swallow it, it can be harmful or
fatal.
•
Do not smoke when testing, installing, or servicing an
ether starting unit. Service it in a well-ventilated area
away from heat, open flames, or sparks.
•
If swallowed, do not induce vomiting. Call a physician
immediately.
•
Wear goggles to avoid getting fluid in your eyes.
Avoid getting it on your skin and avoid breathing the
fumes. If fluid does get in your eyes or fumes irritate
your eyes, flush for 15 minutes with large amounts of
clean water. Contact an eye specialist.
•
Do not move or relocate the ether cylinder or tubing
from its original installation. It must be mounted to
protect it from engine exhaust heat and from moving
parts which could damage it.
•
Do not store the spare cylinder in the cab.
•
In warm weather, when you will not need the ether
starting system, remove the ether bottle from your
truck and store it safely. Return the protective cap to
the bottle mounting connector.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —82— 22-01510 (R12/01)
In cold weather the engine will start faster and the starter motor will
work more easily if ether is injected into the engine cylinder while the
engine is being cranked.
Automatic System
When you press your ignition starter button, the cranking motor and
the ether system are engaged. When needed, starting fluid is
released from a pressurized cylinder, flows through a valve and tub-
ing, and sprays from a nozzle in you engine’s air intake system.
Preheater With Glow Plug
If you have a Caterpillar 3306 PCTA or an earlier model engine, you
may have a glow plug. The glow plug preheater aids cold starting by
burning fuel in the intake manifold and heating the intake air. This
feature can be very helpful if you operate your truck in cold weather.
For more helpful starting information, refer to the engine manual that
came with your vehicle.
Engine Warmup
The purpose of engine warmup is to allow oil film to be established
between pistons and liners, shafts and bearings while your engine
gradually reaches operating temperature.
Warmup Procedure
1. After you’ve started your engine, idle it at approximately 600 RPM
while you check
•oil pressure
•air pressure
•alternator output
2. After a few minutes of idling at 600 RPM, increase your idle speed
to 900 or 1000 RPM. Continue your warmup. This procedure
allows oil to warm and flow freely while pistons, liners, shafts, and
bearings expand slowly and evenly. In extremely cold tempera-
tures, you may have to increase idle speed.
3. Continue the engine warmup until the coolant temperature
reaches at least 130° F (54° C). At this temperature, you can use
partial throttle. Wait until the coolant temperature is at least 160° F
(71° C) before operating at full throttle.
NOTE: In colder climates where the temperature is often
below freezing, the warmup for turbocharged engines is
especially important. Chilled external oil lines leading to the
turbocharger will slow the oil flow until the oil warms, reduc-
ing oil available for the bearings. Watch the engine oil tem-
perature or pressure gauge for a warming trend before
increasing engine idle speed (RPM).
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —83— 22-01510 (R12/01)
WARNING! Exhaust fumes from the engine contain carbon
monoxide, a colorless and odorless gas. Do not breathe the
engine exhaust gas. A poorly maintained, damaged or cor-
roded exhaust system can allow carbon monoxide to enter
the cab or sleeper. Entry of carbon monoxide into the cab is
also possible from other vehicles nearby. Failure to properly
maintain your vehicle could cause carbon monoxide to enter
the cab/sleeper and causes serious illness.
CAUTION: Never idle your vehicle for prolonged periods of
time if you sense that exhaust fumes are entering the cab
or sleeper. Investigate the cause of the fumes and correct it
as soon as possible. If the vehicle must be driven under
these conditions, drive only with the windows slightly
open. Failure to repair the source of the exhaust fumes may
lead to personal harm.
NOTE: Keep the engine exhaust system and the vehicle’s cab/
sleeper ventilation system properly maintained. It is recommended
that the vehicle’s exhaust system and cab/sleeper be inspected
•
By a competent technician every 15,000 miles
•
Whenever a change is noticed in the sound of the
exhaust system
•
Whenever the exhaust system, underbody, cab or
sleeper is damaged
NOTE: Do not stay in the vehicle with the engine running or
idling for more than 10 minutes with the vehicle’s Heater and
A/C ventilation system in RECIRC or at LOW FAN SPEED.
Even with the ventilation system On, running the engine
while parked or stopped for prolonged periods of time is not
recommended.
NOTE: If other vehicles are parked next to you idling, move
your vehicle or do not stay in your vehicle for prolonged periods
of time.
CAUTION: The use of a winterfront can result in excessive
engine coolant, oil, and charge air (intake) temperatures,
which can lead to overheating and possible engine dam-
age. If you must use a winterfront, refer to the “Engine
Operation and Maintenance Manual” for operating restric-
tions and recommendations.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —84— 22-01510 (R12/01)
Transmission Warmup
COE Only
In cold weather you may find shifting sluggish when you first start the
engine. Transmission warmup is especially important at this time, but
it is always a good idea to warm up your transmission before starting
out on the road. To warm up the transmission lubricating oil during
engine warmup, with a single transmission:
•Check that the transmission is in Neutral.
•Release the clutch pedal.
If you have a two-transmission combination:
•Put the main transmission in gear.
•Put the auxiliary transmission in Neutral. This will allow the trans-
mission countershaft to turn, agitating the oil and warming it.
Idling the Engine
Under most circumstances, idling your engine for long periods merely
wastes fuel. In severe arctic weather conditions, however, you may
need longer idling to be sure all parts of your engine are fully lubricated.
WARNING! Do not operate this vehicle if you notice a
gradual or sudden increase in cable shift effort or a
decrease in the usable travel. Take the vehicle to the
nearest authorized Peterbilt dealer for repair. Failure to
correct either of these conditions could result in serious
injury or death.
CAUTION: Cables are designed to be contaminant resis-
tant, not contaminant proof. Protect cable from contami-
nants, chemicals, and physical damage which may damage
the control cable.
NOTE: Shift control cables are lubricated for life and are non-
repairable. The cables cannot be lubricated and/or repaired. If
you detect a broken seal, moisture, or if the cable has frozen,
the shift cable must be replaced. Do not apply heat to thaw or
improve performance of the cables.
WARNING! To reduce the chance of personal injury and/or
vehicle damage from overheated engines, which can result
in a fire, never leave the engine idling without an alert
driver present. If the engine should overheat, as indicated
by the engine coolant temperature light, immediate action
is required to correct the condition. Continued unattended
operation of the engine, even for a short time, may result in
serious engine damage or a fire.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —85— 22-01510 (R12/01)
During the time it takes you to drink a cup of coffee, your engine can
cool as much as 60° F (33° C) below normal operating temperature.
To keep the engine warm during a short break, turn it off. And don’t
allow your engine to idle longer than five minutes.
Putting The Vehicle In Motion
This section discusses the clutch and transmission operation to get
your Peterbilt underway.
Shifting The Transmission
You will find a shift pattern either on a decal in your cab or on a
medallion in the shift knob. Check to be sure you know the correct
sequence for your particular transmission. Refer to the transmission
manual included with your vehicle for complete instructions in the
operation of your transmission.
Shifting Gears in a New Vehicle
Shift carefully in a new vehicle. The transmission may be a little stiff
at first. So be careful to avoid gear clashing.
When you are operating a new vehicle or one that has been exposed
to cold weather, you want the transmission lubricant to circulate and
coat the contacting surfaces of the gears. Metal contacting metal in
moving parts may seriously damage your transmission. So don’t
drive in one gear for long until the transmission lubricant has had a
chance to coat those contacting surfaces.
Operating the Clutch
“Riding” the Clutch
The clutch pedal is not a footrest. Driving with your foot on the clutch
pedal will allow your clutch to slip, causing excessive heat and wear.
You can damage your vehicle this way.
CAUTION: Do not allow your engine to idle, at low rpm’s
(400–600 rpm), longer than five minutes. Long periods of
idling after the engine has reached operating temperatures
can decrease engine temperature and cause gummed pis-
ton rings, clogged injectors, and possible engine damage
from lack of lubrication. The normal torsional vibrations
generated can also cause transmission wear.
WARNING! Do not carry loose objects in your cab, it can be
dangerous. In a sudden stop, or even going over a bump in
the road, they could fly through the air and strike you or a
passenger. You could be injured or even killed. Secure all
loose objects in the cab before moving the vehicle.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —86— 22-01510 (R12/01)
Clutch Travel
To put your vehicle into motion, push down on the clutch pedal until
the clutch brake makes contact. This contact will occur at about 1/2
inch to 1 inch from the end of pedal stroke. Select a gear low enough
to let your vehicle start forward with the throttle at idle until the clutch
is fully engaged.
The total stroke of the clutch pedal is about 10 inches. The first 1 3/4
to 2 inches is free travel. After that is the release stroke, the part that
fully releases the clutch. The last 1/2 to 1 inch engages the clutch
brake. If your vehicle is new, watch the free travel in your clutch care-
fully for the first few hundred miles. As your clutch lining wears and
high spots get worn smooth, you will get less free travel.
Always start out in a low gear with a ceramic-faced clutch. Starting in
higher gears, even with a light load, will cause a very jumpy start and
excessive wear.
And don’t allow your vehicle to roll in the opposite direction at all during
clutch engagement. If you need to start up on an incline, apply your
service brakes before you release the parking brake. Then release
your service brakes as you engage the clutch and apply throttle.
Release Bearing Wear
When you must idle your engine for any period of time, shift your
transmission to neutral and engage the clutch (take your foot off the
pedal). This helps prevent unnecessary wear of your clutch release
bearing. And it is less tiring for you, too.
Clutch Adjustment
Inspect manual and self-adjusting clutches regularly to maintain cor-
rect clutch adjustment. Have your dealer’s service department per-
form any adjustments necessary. Do not adjust your clutch by
adjusting the external linkage without first checking (and correcting if
necessary) the internal clutch adjustment. Using only the external
linkage adjustment could damage the clutch.
Clutch Brake
Your clutch brake is used for stopping gear rotation to let you shift into
1st gear or reverse when your vehicle is at a standstill.
About the last 1/2 to 1 inch of clutch pedal travel activates your clutch
brake. So if you are stopped and want to shift directly into 1st or
reverse, depress the clutch pedal until contact with the clutch brake is
made to stop transmission gear rotation.
CAUTION: Always use first gear or a low speed range to
start the vehicle in motion. The use of a higher gear or
speed range forces undue strain on the engine, clutch,
other transmission components, and may cause damage.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —87— 22-01510 (R12/01)
If you have a butt-tooth condition and can’t shift the transmission,
gradually release the clutch. Then the drive gear can roll enough to
allow the teeth to line up properly and complete the shift.
Double Clutching
Whether you are upshifting or down shifting, it is best to double
clutch. Double clutching is easier on your transmission and on your
engine, helping your vehicle match engine speed with driveline speed
and achieving clash-free shifts. To double clutch:
1. Push down the clutch pedal to disengage the clutch.
2. Move the gear shift lever to neutral.
3. Release the pedal to engage the clutch. This lets you control the
RPM of the mainshaft gears. Thus you can match the RPM of the
mainshaft gears to those of the output shaft.
Upshifts - Let the engine and gears slowdown to the RPM
required for the next gear. Use the tachometer to determine opti-
mum RPM for gear engagement.
Downshifts - Press accelerator to increase engine and gear
speed to the RPM required in the lower gear. Use the tachometer
to determine optimum RPM for gear engagement.
4. Now quickly press the pedal to disengage the clutch. Move the
gear shift lever to the next gear speed position.
5. Release the pedal to engage the clutch.
Interaxle Differential
On vehicles with tandem rear axles, the interaxle differential allows
each axle to turn independently. Differential action between the tan-
dems relieves stress on the rear axles and tires and provides better
performance.
CAUTION: Be careful not to apply the clutch brake while
the vehicle is moving. The purpose of the clutch brake
is to stop the transmission so that you can shift into a
starting gear without grinding. Applying the clutch
brake when the vehicle is moving causes a braking
effect on the entire vehicle. This wear naturally short-
ens the service life of your clutch brake.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —88— 22-01510 (R12/01)
When operating normally on paved, dry surfaces, keep your truck’s
interaxle differential in the UNLOCK position.
Switch In Unlock Position
In the LOCK position, continuous operation on a paved, dry surface
stresses the tandem axles, possibly causing internal damage to them.
Shift into the LOCK position to operate on slippery surfaces like
•Ice or snow - with or without tire chains.
•Dirt roads.
•Loose sand, mud, or other off-road conditions.
Switch into LOCK when checking performance on a chassis dyna-
mometer.
To reduce load on the drive train, ease up on the throttle pedal when-
ever you shift into LOCK or UNLOCK.
WARNING! Do not put the differential lock in the LOCK
position while the wheels are spinning freely (slipping),
you could lose control of the vehicle or cause axle dam-
age—you could be injured. Switch to LOCK only when the
wheels are not spinning.
WARNING! Do not operate the vehicle on dry pavement
with the differential locked; it could lead to an injury acci-
dent. On dry pavement, you will not be able to steer well
with the differential locked. Lock the differential only when
operating on surfaces with poor traction, such as wet, slip-
pery roads or loose gravel.
WARNING! Do not use the differential lock during downhill
operation or at speeds above 25 mph (40 km/h). When it is
engaged under these conditions, your vehicle will exhibit
“understeer” handling characteristics. This “understeer”
condition will cause your vehicle to not turn as quickly and
more steering effort will be required, which can cause an
injury accident.
02905
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —89— 22-01510 (R12/01)
Dual Range (Two Speed) Axles
If you have this option, dual range axles provide two rear axle ratios for
operating under heavy loads or off-highway as well as for over the road
trucking. The Low range provides maximum torque for off-road work.
The High range is a faster ratio for highway speeds and conditions. A
switch on your instrument panel controls this function. You will notice
that it has a guard to protect you from activating it accidentally.
Range Selector
Here’s how to use your dual range axle:
1. Unlock the interaxle differential before starting.
2. Put the Range Selector in the LOW range. Shift the transmission
to start the truck moving.
3. Off-Highway: When you are driving on rough terrain and second-
ary roads, or under a very heavy load, keep the axle in the LOW
range. Shift your transmission to maintain the road speed you
want.
4. When you go from off-highway to highway driving, shift the axle to
the HIGH range this way:
•Be sure the differential is UNLOCKED.
•Keep the accelerator down and move the Range Selector lever to
HIGH.
•Keep driving with the accelerator down until you want the axle to
shift.
•Then release the accelerator until the axle has shifted.
•You are now in the HIGH axle range on the highway. Shift the
transmission normally to reach your desired cruising speed.
WARNING! Never shift the axle when moving down hill.
Engine driveline disengagement may occur, eliminating
engine retardation and allowing the wheels to spin
faster than the current speed of the engine. This may
require severe braking to slow the vehicle down and can
result in an injury accident.
02906
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —90— 22-01510 (R12/01)
5. If you need to downshift the axle for more power:
•Keep the accelerator down & move the Range Selector lever to LOW.
•Keep driving with the accelerator down until you want to downshift
the axle.
•Then release and depress the accelerator pedal quickly to
increase the engine RPM.
•The axle will shift to the LOW range.
Important Tips on Operating Your Dual Range Axle
•To avoid damaging your vehicle, shift the axle at a slower speed
until you are used to driving with the dual range axle.
When driving on a surface with good traction, keep the interaxle differ-
ential unlocked. You can drive with the axle in LOW or HIGH range.
Interaxle In Unlock
•When you are driving with poor traction, lock the differential.
When you have the differential locked, drive with the axle in LOW
range only.
Interaxle In Lock
•Always UNLOCK the interaxle differential before shifting the axle
speed range.
NOTE: If your vehicle has an automatic transmission, it may be
necessary to shift it to the Neutral position momentarily to allow
the main differential lock splines to fully engage or disengage.
02905
02933
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —91— 22-01510 (R12/01)
•Park the truck with the Range Selector in LOW.
Automatic and Automated Transmissions
An automatic or automated transmission makes shifting much easier,
of course. But because your truck pulls a heavy load, if you have
such a transmission, it is important to use it efficiently. For correct
operation, see the manual for your automatic or automated transmis-
sion included with your vehicle.
There is no “park” position. So you will need to apply the parking
brake before leaving the cab.
Transmission Retarder
Retarder Switch
If you have this option, it will act like a brake to slow your vehicle with-
out using the brakes. Take your foot off the throttle and operate the
retarder switch. When you do not need full retarder effect, you can
CAUTION: If you shift the axle range with the interaxle dif-
ferential in LOCK, you could do serious damage to your
axles. Never shift the axle range with the differential
locked.
WARNING! If your vehicle has a Freedomline™ transmis-
sion, be aware that it can roll backwards when stopped on
a hill or grade, or when starting from a stop on a hill or
grade. This could cause serious damage or personal
injury. Observe the following guidelines:
•When stopped on a hill or grade, press the brake pedal.
•When starting from a stop on a hill or grade, quickly
remove your foot from the brake pedal and firmly press on
the accelerator pedal.
WARNING! Do not leave the cab without applying the park-
ing brake. The truck could roll and cause an injury accident.
Always apply the parking brake before you leave the cab.
02934
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —92— 22-01510 (R12/01)
apply it intermittently (off and on) to cause gradual or partial slowing.
Continuous application of your retarder will cause your hydraulic fluid
to get hotter. Intermittent application will help prevent overheating.
Auxiliary Transmission
If you have an auxiliary transmission, see your transmission manufac-
turer’s manual for its proper operation.
If Your Vehicle Must Be Towed
Returning a Towed Vehicle to Service
You will have to add lubricant to prevent damage after your vehicle
has been towed.
1. Into the pinion cage, add 1 pint (.47 liter) of lubricant, OR
Into the inter-axle differential, add 2 pints (.94 liter) of lubricant.
See the Index, under Lubricant Specifications, for the lubricant
required by each axle.
2. After adding the specified type and amount of lubricant, drive the
vehicle. It should be unloaded. Drive 1 to 2 miles (1.5 to 3 km) at
a speed lower than 25 mph (40 km/h).
This will thoroughly circulate the lubricant through the assembly.
Anti-Lock Braking System Operating Information
This vehicle may be equipped with an anti-lock braking system (ABS).
This ABS reduces the possibility of wheel lock-up. If a wheel is about
to lock during braking, the ABS will automatically adjust air pressure
to the brake chambers on the appropriate wheel(s) to prevent wheel
lock-up. The ABS is automatically turned on when the ignition switch
is turned on.
WARNING! Relying completely on your automatic transmis-
sion hydraulic retarder is dangerous. If your engine shuts
down, your retarder will not operate. If you are going fast, or
going downhill at any speed, you could lose control and have
a serious accident. When you are using your retarder, be
ready in an emergency to apply your service brakes suddenly.
CAUTION: Remove the driveline and axle shafts or lift the
driving wheels off the ground before towing the vehicle.
You could seriously damage your vehicle by towing it with
the driveline connected and the drive wheels on the
ground. Worse, when vehicles are towed either by wrecker
or piggy-back, the lubricant in the top front of the drive axle
will drain to the rear. This will leave the top components
dry. The resulting friction will seriously damage them.
Always remove the main driveshaft and axle shafts before
towing your vehicle.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —93— 22-01510 (R12/01)
ABS Warning Lamps
Truck/Tractor ABS Warning Lamp
A truck/tractor ABS warning lamp illuminates when the ignition switch
is first turned on and will remain on until the system self-test has been
completed successfully. Normally, this ABS lamp will remain on until
a speed of no more than 9 mph has been reached and the speed
sensors have been checked for correct output. The lamp should
remain off after this point unless a failure in the system is detected.
The truck/tractor ABS lamp is located in the warning lamp cluster
(see page 53 and page 54).
WARNING! The brake system is a critical vehicle safety
system. For the safety of you and others around you, have
the vehicle submitted for periodic preventive maintenance
checks as well as having any suspected problems immedi-
ately checked by an Authorized Service Center. Failure to
properly maintain your brake system can lead to serious
injury accidents.
WARNING! Do not drive through water deep enough to wet
brake components, as it may cause the brakes to work less
efficiently than normal. The vehicle’s stopping distance
may be longer than expected, and the vehicle may pull to
the left or right when brakes are applied, which could con-
tribute to an accident.
WARNING! Do not rely on an anti-lock brake system that is
functioning improperly. You could lose control of the vehi-
cle resulting in a severe accident and personal injury. If any
ABS lamp goes on while you are driving or stays on after
the self-check, that anti-lock system might not be working.
That ABS may not function in an emergency. You will still
have conventional brakes, but not anti-lock brakes. If any
warning lamp indicates a problem, have that ABS checked.
02999A
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —94— 22-01510 (R12/01)
Trailer ABS Warning Lamp
Trucks, tractors, and trailers built on and after March 1, 2001 are
equipped with power line communication (PLC) per U.S. FMVSS 121,
including a trailer ABS warning lamp in the cab (see page 53 and
page 54):
A trailer ABS warning lamp will illuminate for a bulb check when the
ignition switch is first turned on - whether or not a trailer is connected
to the vehicle. If the bulb check is satisfactory, the lamp will next do
either of the following:
1. If no trailer is connected, or if a non-ABS-equipped trailer is con-
nected, the trailer ABS lamp will go off after a few seconds.
CAUTION: If the truck/tractor ABS warning lamp does
not illuminate when the ignition is first turned on, there
is a problem with the bulb or wiring. The driver should
have this checked as soon as possible.
CAUTION: If the trailer ABS warning lamp does not illu-
minate when the ignition is first turned on, there is a
problem with the bulb or wiring. The driver should have
this checked as soon as possible.
NOTE: A successsful warning lamp illumination and bulb
check at ignition on does not indicate that the trailer you may
be connected to has trailer ABS. You should personally
inspect every trailer to determine its braking system.
NOTES:
•
A “properly connected” ABS-equipped trailer is
-a trailer with PLC hooked up to the J560 connector
-a trailer without PLC that is hooked up to an optional
ISO 3731 connector
•
For doubles or triples: PLC does not distinguish between
trailers. An ABS problem in any trailer will activate the
trailer ABS warning lamp.
ABS
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —95— 22-01510 (R12/01)
2. If an ABS-equipped trailer is properly connected, the trailer ABS
warning lamp will remain illuminated for a few more seconds while
the trailer ABS is tested.
•If no trailer ABS problems are detected, the lamp will go off.
•If a trailer ABS problem is detected, the lamp will remain on. The
driver should have the trailer’s ABS problem corrected before the
vehicle is driven with that trailer attached.
Wheel Spin Control Warning Lamp
Your truck/tractor ABS may have an acceleration slip regulation (ASR)
or automatic traction control (ATC) feature. Either of these features is
monitored by a wheel spin control warning lamp. In conventional mod-
els this lamp is located in the warning lamp cluster (see page 53). In
COE models, this lamp is located on the main dash:
The Wheel Spin Control warning lamp will briefly illuminate and then
go out when the ignition switch is first turned on. The Wheel Spin
Control warning lamp will illuminate whenever the ASR or ATC sys-
tem detects drive wheel spin. The lamp will remain illuminated as
long as wheel spin is detected and the ASR or ATC system is apply-
ing the drive wheel brakes or reducing engine torque. Do not allow
the Wheel Spin Control lamp to remain on continuously for an
extended length of time. Extended continuous use of the ASR / ATC
can cause overheating of the drive wheel brakes. Engine torque or
vehicle speed should be reduced to eliminate wheel spin and prevent
excessive application of the ASR/ATC system. Except for checking for
proper illumination of the ABS and Wheel Spin Control warning lamps
when first starting the vehicle, and for monitoring these lamps while
driving, no special operating procedures are required. For detailed
system description, see service literature for your specific ABS that
was provided with your vehicle.
Digital Message Center
If so equipped, the digital message center (DMC) in a vehicle will
detect faults during operations. When a new fault is detected, a LED
next to the DIAG key on the DMC’s keypad will illuminate. All faults
are either active or inactive (active faults are conditions that still exist).
02935
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —96— 22-01510 (R12/01)
•Active faults cannot be erased until they become inactive. They
should be investigated as soon as possible.
•Inactive faults can be erased by using the CANCEL key on the DMC.
Refer to your DMC operator’s manual for more information.
Bobtail Brake Proportioning System
Peterbilt tractors without anti-lock brake systems (ABS) are typically
equipped with a bobtail brake proportioning system. When a trailer is
not connected, the drive axle brake application pressure will automat-
ically be limited by the proportioning system. When driven in a bobtail
mode, these tractors will require greater brake pedal application to
provide the equivalent braking to a bobtail tractor not equipped with a
proportioning system.
Brake Safety and Emergency
To stop your vehicle in an emergency, vary the service brake applica-
tion pressure to provide maximum braking force without locking the
wheels. Use engine compression to assist the service brakes; i.e.,
don’t depress the clutch pedal until the engine reaches idle speed.
NOTE: The following information is applicable only to tractor
configurations built on or after March 1, 1997 and not regis-
tered in the United States.
WARNING! Because of the increased use of the steer
axle brakes when driving bobtail, always ensure the
steer axle brakes are functioning and properly adjusted.
Failure to do so can lead to decreased braking ability,
longer stopping distances, loss of vehicle control, and
can cause an accident.
WARNING! Do not operate the vehicle in the event of a
malfunction in any air circuit. The vehicle should not be
operated until the system is repaired and both braking
circuits, including all pneumatic and mechanical com-
ponents, are working properly. Loss of system air can
cause the service brakes not to function resulting in the
sudden application of the spring brakes causing wheel
lock-up, loss of control, or overtake by following vehi-
cles. You could be in an accident and severely injured.
WARNING! Unless you have an anti-lock braking sys-
tem, always avoid completely depressing the service
brake pedal, if possible, even during emergency brak-
ing. Depressing the brake pedal too aggressively can
cause the wheels to lock, which can lead to an uncon-
trolled skid and could cause an accident.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —97— 22-01510 (R12/01)
Overheated Brakes
Under normal braking conditions, the energy generated will bring the
internal brake drum temperature to about 500° F (260° C). This is
well within the safe zone: The maximum safe temperature of linings
for drum type brakes is usually about 800° F (427° C).
But if service brakes are used improperly or for prolonged periods,
internal brake drum temperatures may commonly exceed 800° F
(427° C). Such brake overheating may be detected by a burning
smell or smoke coming from a drum. If this occurs, you should imme-
diately stop and check for cracked brake drums or lining fires. If nei-
ther exists, get back behind the wheel and resume a slow speed as
soon as possible to cool the brakes.
Parking Brakes and Their Use
The yellow diamond-shaped knob on your instrument panel controls
your parking brakes. These are spring brakes which you activate by
releasing air pressure from their chambers. When they are not in
use, air pressure compresses the springs and releases the brakes.
But putting the valve in the Park position exhausts air from the cham-
bers and allows the springs to extend and apply the brakes. Also, if
your system air drops below the safe operating level, the spring
brakes will apply automatically, bringing your vehicle to a stop.
Red / Yellow Controls
WARNING! On trailers built before March 1975 you may
not have parking brakes if the trailer reservoir pressure
leaks down. If you depend on them to hold your vehicle,
they could release, causing a serious accident. These
older trailers have emergency brakes not designed for
parking. They will apply only if there is enough trailer
reservoir pressure. Don’t use your trailer emergency
brakes for parking. Apply your tractor parking valve
too.
0290
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —98— 22-01510 (R12/01)
To apply all your parking brakes, pull the yellow knob Out. The
parking brakes will set. And the trailer air supply valve (red octagon
knob) will automatically pop out, releasing air pressure and setting
the trailer brakes.
To release your truck or tractor brakes ONLY, push in the yellow
knob. Your trailer will remain parked.
•To release the trailer brakes ONLY, push in the red knob. The truck
or tractor will remain parked.
•To release the full combination of brakes, push in BOTH yellow
and red knobs.
WARNING! Do not leave the cab without applying the park-
ing brake. The truck could roll and cause an injury acci-
dent. Always apply the parking brake before you leave the
cab.
WARNING! Stopping with the parking brake controls
can cause a sudden wheel lock-up, loss of control, or
can cause you to be overtaken by following vehicles.
You could be severely injured. Never pull out the park-
ing brake valve while the vehicle is moving.
WARNING! Do not use the trailer hand brake or service
brakes to park and hold an unattended vehicle—use the
parking brakes. Because service brakes work with air pres-
sure, these brakes could slowly release. Your vehicle could
roll, causing a serious accident. Someone could be hurt or
killed. Never rely on the service brakes to hold a parked
vehicle.
WARNING! Never drive your vehicle with the parking brake
applied. Always release the parking brakes prior to moving
the vehicle. Failure to disengage the parking brakes prior
to moving your vehicle could result in excessive heat build-
up in the brake system, resulting in a fire.
NOTE: Today’s diesel electronic engines have significant
torque and startability power at low RPM. Combinations of
engine speed and available torque may over-power the vehi-
cle’s parking brakes.
CAUTION: Do not try to put the vehicle in motion before
pressure in the system reaches 100 psi (689 kPa) because
the wheels are locked by the spring brake action. Unneces-
sary stress and possible brake malfunction could occur if
the vehicle is forced to move before the air system reaches
100 psi (689 kPa).
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —99— 22-01510 (R12/01)
Trailer Air Supply Valve
The red octagon knob controls the air supply to the trailer.
To supply air to the trailer system and release the trailer parking
brakes:
•Allow the tractor air system pressure to build up to operating level.
•Push the red knob in.
•Hold the red knob in by hand until the trailer air pressure builds to
a pre-set level, about 45 psi. At this point it will remain in.
The yellow knob will remain out; the tractor will remain parked. If you
ever have a failure or disconnect of the air supply hose to the trailer,
the trailer parking brakes will set. The red knob will automatically pop
out and seal off the tractor air reservoirs to protect the tractor air sys-
tem pressure.
When operating the tractor “bobtail”: The red knob must remain out
to protect the tractor air system pressure
Manually Releasing Spring Brakes
You may sometime have to release your vehicle’s spring brakes by
hand to allow the vehicle to be towed. This could happen if the sys-
tem air pressure doesn’t reach operating pressure because your
engine or compressor is not working properly. You will have to
release the spring brakes at the spring brake chambers.
WARNING! Do not operate a vehicle when the spring
brakes have been released manually. Driving a vehicle
that has had its spring brakes manually released is
extremely dangerous. You would probably have no
brakes at all. You could have a serious or fatal accident.
WARNING! Releasing the spring brakes on an unse-
cured vehicle could lead to an accident. The truck could
roll, causing severe injury. Always secure the truck with
wheel chocks, chains, or other safe means to prevent
rolling before manually releasing the spring brakes.
NOTE: The primary purpose of the manual release feature
is to permit the vehicle to be towed to a repair facility.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —100— 22-01510 (R12/01)
To release spring brakes manu-
ally:
1. Remove the cap from the
spring chamber.
2. Remove the release stud
assembly from the side
pocket; remove the release
nut and washer from the
release stud.
3. Slide out the release stud.
02936
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —101— 22-01510 (R12/01)
4. Insert the release stud
through the opening in the
spring chamber where the
cap was removed. Insert it
into the pressure plate. Turn
the release stud 1/4-turn
clockwise in the pressure
plate. This secures the cross
pin into the cross pin area of
the pressure plate and locks
it into the manual release
position.
5. Assemble the release stud
washer and nut on the
release stud.
6. With a wrench, turn the
release stud assembly nut
until the compression spring
is 90% - 95% caged. While
doing this, check to make
sure the push rod (adapter
push rod or service push rod)
is retracting. Do not over-
torque the release stud
assembly. (S-Cam type max-
imum 50 ft.-lb, Wedge type
maximum 30 ft.-lb.) The
spring brake is now mechani-
cally released. 02937
PART 7: STARTING & OPERATING THE VEHICLE
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Retarders
Various retarders are available which function against the engine,
driveline, or transmission. These are devices that use your engine’s
power to slow down your vehicle. They save wear and tear on your
service brakes and can be a safety feature, too, because they can
keep your brakes from overheating.
Ideally, you should always slow your vehicle with your retarder (where
permitted by law) and use your service brakes only for stopping com-
pletely. Operating this way will greatly prolong the life of your brakes.
WARNING! Disassembling the spring brake chamber is
dangerous and could cause serious injury. These
chambers contain a powerful spring that is compressed.
Sudden release of this spring could cause you to be
badly injured. Do not disassemble a spring brake cham-
ber.
WARNING! In an emergency, the retarder might not stop
you fast enough to prevent an accident. You could be
badly hurt if you relied only on your retarder. Use the
service brakes for quick stops. The retarder is not an
emergency brake.
WARNING! The retarder is NOT intended as the primary
brake for the vehicle, nor is it an emergency brake. The
retarder only helps the service brakes by using pressure to
slow the drivetrain. Use the service brakes for quick stops.
WARNING! The service brakes must be used in an emer-
gency. The retarder alone might not stop you fast enough
to prevent an accident. You could be badly hurt if you relied
only on the retarder.
WARNING! Do not use the retarder when operating on road
surfaces with poor traction (such as wet, icy, or snow cov-
ered roads or gravel). Retarders can cause the wheels to
skid on a slippery surface. You could lose control of the
vehicle if the wheels begin to skid, resulting in an accident.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —103— 22-01510 (R12/01)
Driving Bobtail or with an Unloaded Trailer
We recommend that you do not use your engine retarder to slow
down when you are bobtailing or pulling an empty trailer.
Pyrometer
Maintaining Correct Operating Temperature
The optional pyrometer indicates engine exhaust gas temperature.
Because it responds almost immediately to changes in exhaust tem-
perature, the pyrometer is an excellent indicator of engine output.
If you watch engine speed and exhaust temperature ranges, the
pyrometer can help you operate your truck more efficiently and avoid
sudden changes in engine operating temperature.
Procedure For Reducing High Pyrometer Temperature Readings
1. If the pyrometer indicates excessive temperature, ease up slightly
on the throttle.
2. If RPM and speed drop, downshift one gear to help lower the
exhaust temperature.
3. Observe the pyrometer reading. If the temperature continues to
be high, continue downshifting until acceptable operating tempera-
tures can be maintained.
WARNING! Using an engine retarder can cause a wheel
lockup. The trailer is not loading the tires enough to
give the traction you may need. When you are bobtail or
unloaded, you can have a serious accident if your
wheels lock suddenly during braking. You could be
injured. Don’t use your retarder when you are driving
bobtail or with an unloaded trailer.
CAUTION: Do not allow the pyrometer reading to
exceed the specified maximum operating temperature.
If the pyrometer has no label specifying the maximum
operating temperature for the pyrometer, contact your
engine distributor for a recommendation.
NOTE: Different size injectors or changes in altitude may
affect engine operating and exhaust temperatures.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —104— 22-01510 (R12/01)
Stopping The Engine
Before Stopping The Engine
A hot engine stores a great amount of heat. And it doesn’t cool down
immediately after you shut it off. Always cool your engine down
before shutting it off. You will greatly increase its service life.
Idle the engine at 1000 RPM for five minutes. Then low idle for thirty
seconds before shutdown. This will allow circulating coolant and
lubricating oil to carry away heat from the cylinder head, valves, pis-
tons, cylinder liners, turbocharger, and bearings. This way you can
prevent serious engine damage that may result from uneven cooling.
Turbochargers
This cooling-down practice is especially important on a turbocharged
engine. The turbocharger contains bearings and seals that are sub-
jected to hot exhaust gases. While the engine is operating, heat is
carried away by circulating oil. If you stop the engine suddenly after a
hard run, the temperature of the turbocharger could rise as much as
100°F (55°C) above the temperature reached during operation. A
sudden rise in temperature like this could cause the bearings to seize
or the oil seals to loosen.
Refuel Before the Final Stop
Air space in your fuel tanks allows water to condense there. To pre-
vent this condensation while you are stopped, fill your tanks to 95% of
capacity.
Final Stop
To make sure your vehicle is ready to go after a long stop (such as
over night), please follow the suggestions below. Your vehicle will be
easier to get going when you are ready, and it will be safer for anyone
who might be around it.
Please remember, too, that in some states it is illegal to leave the
engine running and the vehicle unattended.
Final Stopping Procedures
1. Set the parking brake before leaving the driver’s seat.
To hold your vehicle while it is parked, don’t rely on
•Air Brakes
•Hand Control Valve for Trailer Brakes
•Engine Compression
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —105— 22-01510 (R12/01)
2. If you are parked on a steep grade, block the wheels.
Blocked Wheels
3. Drain water from the air reservoirs.
While the engine and air supply system are still warm, drain mois-
ture from the air reservoirs. Open the reservoir drains just enough
to drain the moisture. Don’t deplete the entire air supply. Be sure
to close the drains before leaving the vehicle.
Opening Drains
4. Secure the vehicle. Close all the windows and lock all the doors.
WARNING! Using the trailer hand brake or air brakes to
hold a parked vehicle is dangerous. Because they work
with air pressure, these brakes could come loose. Your
vehicle could roll, causing a serious accident. Someone
could be hurt or killed. Always set the parking brakes.
Never rely on the trailer hand brake or truck air brakes
to hold a parked vehicle.
02938
02939
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —106— 22-01510 (R12/01)
Setting Ride Height
Vehicles equipped with rear air suspensions have their ride height
and axle (pinion) angle(s) preset at the factory. These are precision
settings and should not be altered. Incorrectly adjusted ride height
may result in improper interaxle U-joint working angles. This can
result in premature driveline wear and driveline vibration. If your vehi-
cle is equipped with a Peterbilt rear air suspension, and if it becomes
necessary to reset the ride height, you may temporarily set it by fol-
lowing the next procedure. Proper ride height measurement and val-
ues are shown in the illustration and table below.
Ride Height Measurement (Location for Tandem Axles Shown)
Follow this procedure to temporarily set ride height.
1. Ensure that the air supply and delivery plumbing of the height con-
trol valve is consistent with the illustration on the next page.
Proprietary Rear Air Suspension Ride Height [inches (mm)]*
Single Drive Tandem Drive
Air Leaf N/A 11.70 (297)
Air Trac 11.00 (279) 11.00 (279)
Low Air Leaf 8.50 (216) 8.50 (216)
Low Low Air Leaf N/A 6.50 (165)
FLEX
Air N/A 8.50 (216)
*These values are for a fully laden vehicle
WARNING! To prevent possible injury and damage to
property, ensure that a vehicle is parked and the wheels
chocked before beginning this procedure.
CAUTION: Completing this procedure will enable you to
safely reach the nearest authorized Peterbilt repair facil-
ity to have ride height and pinion angle reset using the
proper equipment and technique. Do this as soon as
possible to avoid potential driveline damage.
NOTE: Suitable wheel chocks are at a minimum an 18-inch
(46 cm) long 4x4.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —107— 22-01510 (R12/01)
Typical Height Control Valve (Top & Rear Views Looking Forward)
FORWARD
ALIGNMENT PIN OR DOWEL LINK BOLT
FROM DUMP VALVE SWITCH
CONTROL ARM
MOUNTING NUTS
SUPPLY FROM FORWARD
AIR TANK
DELIVERY TO RH AIR BAG(S)
DELIVERY TO LH AIR BAG(S)
AIR BAG LINK ROD
EXHAUST
02941
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —108— 22-01510 (R12/01)
2. Loosen the fasteners mounting a height control valve to its bracket.
3. Rotate the valve either clockwise or counterclockwise until air pres-
sure in the air springs provides the ride height specified for that
suspension. Measure the ride height from the bottom of the frame
rail to the approximate centerline of the rearmost drive axle hub:
•For tandem axles, make the vertical measurement at the center-
line of the suspension (see illustration on page 106).
•For a single axle, make the measurement in front of the axle, in the
area forward of the tires but not past the suspension bracket.
4. When at the correct ride height, ensure that the height control
valve lever is in the neutral position, then install either the built-in
alignment pin or a 1/8-inch (3 mm) dowel (see page 107).
5. Torque the mounting fasteners to 55 — 75 Lb. in. (6.2 — 8.5 N.m.).
6. Remove the alignment pin or dowel.
7. Repeat Steps 2 through 6 above for the RH valve on vehicles with
a dual-valve system.
CAUTION:
•
The rear of a vehicle will drop about 3 1/2 inches (88
mm) when the air springs are deflated. Ensure that no
persons or objects that could be injured or damaged
are under the vehicle before deflating the air springs.
•
To minimize risk of damage or injury, do not use a
dump valve to deflate the air springs. Rotate the
height control valve(s) manually to ensure positive
control of air spring deflation.
•
To minimize risk of injury, keep away from air springs
as they are being inflated.
NOTE: On dual-valve systems, begin with the LH valve on
the next step.
NOTE: At least one of the mounting holes in the height con-
trol valve bracket will be slotted to permit rotating the valve.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —109— 22-01510 (R12/01)
Driving With Deflated Air Springs
If an air spring is ruptured, there will be enough air pressure to drive
the vehicle to a safe stop off the highway to investigate the problem.
You can get to a repair facility if you do the following:
•Remove the height control link connected to the axle and to the
suspension air valve control arm. This will cause the air valve con-
trol arm to center in the closed position.
•The air system can then be pumped up to normal pressure for
continued operation.
WARNING! Your brakes could fail if you continue driv-
ing with deflated air springs. Air escaping from the sys-
tem will lower the air pressure, which could cause a
spring brake to engage. The spring brake may cause
your brakes to drag and burn up the linings. Don’t con-
tinue to operate in this condition.
WARNING! Low air pressure could make the brakes
unsafe for driving. Before driving the vehicle, make
sure the pressure does pump up to over 100 psi for nor-
mal brake operation. If the air pressure does not pump
up to at least 100 psi, don’t try to move the vehicle.
CAUTION: Operating a vehicle with air suspension bags
either overinflated or underinflated may cause damage
to driveline components. If a vehicle must be operated
under such conditions, do not exceed 5 mph.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —110— 22-01510 (R12/01)
Driving Tips And Techniques
This section covers additional driving tips and techniques on how to
drive your Peterbilt more efficiently. For further information, read the
American Trucking Association’s (ATA)
Truck Driver’s Handbook
. It
will give you more tips on starting, shifting, and driving your vehicle.
Coasting
Do not coast with the transmission in neutral or with the clutch pedal
depressed. Besides being illegal and dangerous, coasting is also
expensive. It causes premature failure or damage to the clutch and
transmission and overloads the brake system.
Coasting with the transmission in neutral also prevents proper transmis-
sion component lubrication. During coasting the transmission is driven by
the rear wheels, and the countershaft gear (which lubricates the transmis-
sion components by oil splash) will only be turning at idle speed.
Descending a Grade
WARNING! Do not coast with the transmission in neu-
tral or with the clutch pedal depressed—it is a danger-
ous practice. Without the use of the retarding power of
the drivetrain, your vehicle can reach dangerous
speeds. At very high speeds you may not be able to put
the transmission in any gear. At high speeds you could
seriously damage your vehicle or cause an accident
when you put the transmission in gear. The engine
speed could exceed the maximum governed speed and
cause a serious accident due to mechanical failures.
WARNING! Do not hold the brake pedal down too long or
too often while going down a steep or long grade. This
could cause the brakes to overheat and reduce their effec-
tiveness. As a result, the vehicle will not slow down at the
usual rate. To reduce the risk of personal injury and/or an
accident, before going down a steep or long grade, reduce
speed and shift the transmission into a lower gear to help
control your vehicle speed. Failure to follow procedures for
proper downhill operation could result in loss of vehicle
control.
PART 7: STARTING & OPERATING THE VEHICLE
PB1317 (CAT. NO. 5229 ) —111— 22-01510 (R12/01)
Engine Overspeed
•Operate the engine within the optimum engine rpm range and do
not allow the rpm’s to exceed the maximum governed speed. See
your
Engine Operation and Maintenance manual
for information
regarding engine rpm. When the engine is used as a brake to
control vehicle speed (e.g., while driving down a grade), do not
allow the engine rpm to exceed maximum governed speed.
•Under normal load and road conditions operate the engine in the
lower end of the range.
Use of Tachometer
The tachometer is an instrument that aids in obtaining the best perfor-
mance of the engine and manual transmission, serving as a guide for
shifting gears. Refer to the
Engine Operation and Maintenance man-
ual
for optimum engine rpm.
If the engine rpm moves beyond the maximum governed speed, indi-
cating an overspeed condition, apply the service brake or shift to a
higher gear to bring engine rpm within the optimum speed range.
•When driving downhill: shift to a lower gear, use the engine brake
(if so equipped), and use the service brake, keeping the engine
speed below 2,100 rpm.
When the engine speed reaches its maximum governed speed, the
injection pump governor cuts off fuel to the engine. However, the gov-
ernor has no control over the engine rpm when it is being driven by
the vehicle’s transmission, for example, on steep downgrades. Apply
service brakes or shift to a higher gear.
Fuel economy and engine performance is also directly related to driv-
ing habits:
•The best results in trip time and fuel economy are obtained while
driving the vehicle at a steady speed.
•Shift into higher or lower gears (or apply the service brake) to keep
engine rpm near the lower end of the optimum operating range.
•Avoid rapid acceleration and braking.
CAUTION: To avoid engine damage, do not let the engine
rpm go beyond the maximum governed rpm—valve dam-
age could result if overspeed conditions occur.
NOTE: Often these recommendations are secondary to main-
taining an adequate and safe speed relative to the surrounding
traffic and road conditions.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —112— 22-01510 (R12/01)
Preventive Maintenance Schedule
Your preventive maintenance program begins with the daily checks
you perform. See PART 6: DRIVER’S CHECKLIST for these. If you
check your Peterbilt vehicle regularly, you can avoid many large,
expensive, and time-consuming repairs. Your vehicle will operate bet-
ter, be safer, and last longer. Neglect of recommended maintenance
may in some cases void your vehicle’s warranty. So for your safety
and the life of your vehicle, please follow the Maintenance Schedule.
Remember - there may be maintenance operations that demand skills
and equipment you don’t have. If so, please take your vehicle to an
expert mechanic, for your safety and your vehicle’s safety.
WARNING! It can be dangerous to attempt maintenance
work without sufficient training and the proper tools.
You could be injured, or you could make your vehicle
unsafe. Do only those maintenance items you are fully
trained and equipped to do.
•
Before attempting any procedures in the engine com-
partment, stop the engine and let it cool down. Hot
components can burn skin on contact.
•
Be alert and cautious around the engine at all times
while the engine is running.
•
If work has to be done with the engine running, always
(1) set the parking brake, (2) chock the wheels, and (3)
ensure that the shift lever or selector is in Neutral.
•
Exercise extreme caution to prevent neckties, jewelry,
long hair, or loose clothing from getting caught in the
fan blades or any other moving engine parts.
•
Disconnect the battery ground strap whenever you
work on the fuel system or the electrical system. When
you work around fuel, do not smoke or work near heat-
ers or other fire hazard. Keep an approved fire extin-
guisher handy.
•
Always support the vehicle with appropriate safety
stands if it is necessary to work underneath the vehi-
cle. A jack is not adequate for this purpose.
•
When working underneath the vehicle without appro-
priate safety stands but with the wheels on the ground
(not supported), make sure that (1) the vehicle is on
hard level ground, (2) the parking brake is applied, (3)
all wheels are chocked (front and rear) and (4) the
engine cannot be started. Remove the ignition key.
•
Never start or let the engine run in an enclosed, unven-
tilated area. Exhaust fumes from the engine contain
carbon monoxide, a colorless and odorless gas. Car-
bon monoxide can be fatal if inhaled.
NOTE: Suitable wheel chocks are at a minimum an 18-inch
(46 cm) long 4x4.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —113— 22-01510 (R12/01)
If you operate your vehicle off-highway or in very heavy-duty applica-
tions such as mining, logging, or earth moving, you will need to per-
form maintenance checks and services more frequently. The charts
on the following pages show the maintenance intervals for recom-
mended maintenance practices.
NOTES:
•Engine lubricating oil change intervals aren’t listed here. Refer to
your engine’s operating manual for recommendations. For specific
information on maintenance procedures consult your vehicle main-
tenance manual.
•The initial fill of drive axle lubricant must be changed before the
end of the first scheduled maintenance interval. Refer to the infor-
mation on page 137 before you put a new vehicle into service.
•The initial fill of lubricant in manual transmissions must be
changed before the end of the first maintenance interval. See
page 134 for specific information.
•If your vehicle is equipped with an automatic transmission, consult
the owner’s manual for it that came with your vehicle to obtain
lubricant check and change intervals.
PREVENTIVE MAINTENANCE (PM) INTERVALS
IAB CD E
At the first
15,000 mi./
24,000 km or
at the first PM
15,000 mi./
24,000 km/
Monthly
30,000 mi./
48,000 km
60,000 mi./
96,000 km/
6 months
120,000 mi./
192,000 km/
Annually
240,000 mi./
384,000 km
NOTE:
•
Where questions or discrepancies develop between these
recommendations and component supplier recommenda-
tions, consult the supplier for specific recommendations.
•
Maintenance requirements of specific vocational configura-
tions will dictate whether the intervals used are determined
based on mileage, time in service, hours operating, etc.
•
These maintenance practices and intervals are intended as
additional requirements and are not to replace, in whole or
in part, the pretrip inspection requirements of the Commer-
cial Driver’s License (CDL) as established in the Federal
Commercial Motor Vehicle Safety Act of 1986.
part8.fm Page 113 Friday, December 7, 2001 7:02 AM
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —114— 22-01510 (R12/01)
*
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
Frame Fifth Wheel Check the kingpin lock and plate for wear and function; lubricate
(NLGI #2 grease).
X
Frame Fasteners Check for tightness; tighten to the specified torque value as
required (see page 170).
X
Crossmembers and
Mounting Brackets
Inspect for cracks and loose fasteners. Replace or tighten to the
specified torque value as required (see page 170).
X
Front Axle Steering knuckles, thrust
bearings, kingpins,
drawkeys, tie rod ends,
steering stops, & bushings
Inspect for wear and damage and for endplay. Shim or replace as
required (see page 168).
X
Kingpin bushings & tie rod
ball ends
Lubricate with approved grease. X
Total Vehicle Alignment Check and adjust as required. X X
Front
Suspension
Front Spring Inspect for cracked leaves, worn bushings, & excessive corrosion. X
Spring Pins & Shackles Inspect for worn parts and excessive joint clearance. Shim or
replace as required. X
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —115— 22-01510 (R12/01)
Front
Suspension
Spring Pins Lubricate. X
Shock Absorbers Inspect for leaking, body damage, and damaged or worn bush-
ings. Replace as required.
X
Shock Absorbers Check for proper function. X
U-bolts (ON HIGHWAY) Check the general condition and the tightness of the nuts. Tighten
the nuts to the specified torque value as required (see page 169 ). XX
U-bolts (OFF HIGHWAY) Check the general condition and the tightness of the nuts. Tighten
the nuts to the specified torque value as required (see page 169 ).
X
Drive Axle
(Dana)
Axle Housing Visually inspect for damage or leaks. X
Axle Housing Check oil level. Check “cold.” Torque the drain plug. X
Axle Housing Drain the lubricant while warm. Flush each unit with clean flushing
oil. Change the lubricant.
See information on
page 140
Air Shift Unit Check the lubricant level. X
Air Shift Unit Remove the housing cover and drain the lubricant. Wash the parts
thoroughly and dry in air.
X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —116— 22-01510 (R12/01)
Drive Axle
(Dana)
Breather Clean or replace. X
Lube Pump (ON HIGHWAY)
Remove the magnetic strainer and inspect for wear particles.
Wash in solvent and dry in air.
X
Lube Pump (OFF HIGH-
WAY)
Remove the magnetic strainer and inspect for wear particles.
Wash in solvent and dry in air.
X
Lube Filter (ON HIGHWAY) Change. X
Lube Filter (OFF HIGH-
WAY) Change. X
Magnetic drain plug and
breather (ON HIGHWAY)
Clean or replace. X
Magnetic drain plug and
breather (OFF HIGHWAY)
Clean or replace. X
Drive Axle
(Meritor)
Axle Housing Check the “cold” fill level at the differential carrier plug for a pinion
angle of less than 7 degrees, or at the axle bowl plug for a pinion
angle of greater than 7 degrees. Tighten the plug to 35 - 50 Lb. ft.
(47 - 68 N.m.)
X
Axle Housing Visually inspect for damage or leaks. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —117— 22-01510 (R12/01)
Drive Axle
(Meritor)
Axle Housing Drain and replace the lubricant. See information on
page 139
Lubricant filter Change the filter. X
Breather Check the operation. If the cap doesn’t rotate freely, replace. X
Input shaft & pinion shaft Check and adjust the endplay. X
Axle shaft Tighten the rear axle flange nuts to the specified torque value. X
Interaxle differential Check the operation. X
Rear
Suspension U-bolts Check the torque. Tighten to specified torque value as required
(see page 169). XX
Frame & crossmember
bolts
Check the torque. Tighten to specified torque value as required
(see page 170).
X
Mounting brackets and
fasteners
Check the condition and the fastener torque. Tighten to the speci-
fied torque value as required (see page 170).
XX
Brakes Brake lining Inspect; replace as required. X
Slack adjusters Check the push rod travel and check the control arm for cracks.
Adjust at reline (see page 143).
X
Slack adjusters Lubricate (NLGI #2 grease). X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —118— 22-01510 (R12/01)
Brakes Brake camshaft bearing Lubricate (NLGI #2 grease). X
Brake treadle valve Clean the area around the treadle, boot, and mounting plate.
Check the pivot and mounting plate for integrity. Check the
plunger boot for cracks. Lubricate roller pin, pivot pin, and plunger
(NLGI #2 grease).
X
Brake treadle valve Rebuild through an authorized Peterbilt service facility. X
Brake air system Check air lines and fittings for leaks (see page 143). Adjust routing
as required to reduce chafing. Check tank mounting and condition.
X
Brake air system Clean or replace the inline filters. X
Hub,
Drum, &
Hubcap
Hubs (non-LMS) Check the bearing endplay and adjust as required (see page 152). X
Hubs (non-LMS) with out-
runner seals
Clean the components and check for excessive wear or damage.
Change the oil and seal (see page 141).
X
Hubs (non-LMS) with
standard seals
Clean the components and check for excessive wear or damage.
Change the oil and seal (see page 141).
X
Hub seals (all) Check for leaks; replace as required. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —119— 22-01510 (R12/01)
Hub,
Drum, &
Hubcap
LMS Hubs (Dana) Check the bearing endplay and adjust as required (see page 152). X
LMS Hubs (Dana) with
Synthetic Lubricant
Clean the components and check for excessive wear or damage.
Change the oil and seal (see page 141). 500,000 miles/
800,000 km
LMS Hubs (Dana) with
Mineral Lubricant
Clean the components and check for excessive wear or damage.
Change the oil and seal (see page 141). 360,000 miles/
576,000 km
Brake drums Inspect for visible cracks, heat checking, galling or scoring of the
braking surface, and for severe corrosion on the outside surface.
Check for out-of-round or oversize condition [0.080 in. (2 mm)
more than the original diameter]. Replace as required.
X
Hubcaps Clean the sight window. Check the center plug, mounting flange,
and fill plug for leaks and for proper installation. Replace broken or
damaged parts. Check the lubricant level and add as required.
X
Main &
auxiliary
transmission
Main & auxiliary transmis-
sion and transfer case
Inspect for visible damage, signs of overheating, and leaks. X X
Main & auxiliary transmis-
sion and transfer case
Check the drain plugs for tightness. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —120— 22-01510 (R12/01)
Main &
auxiliary
transmission
Oil cooler Clean the fins (air-to-oil type) and body. Check the hose condition
and for leaks; replace as required.
X
Main &
auxiliary
transmis-
sion (Dana)
Main & auxiliary transmis-
sion Check the oil level; refill as required (see page 134 and page 136). X
Main &
auxiliary
transmis-
sion
(Dana)
Main & auxiliary transmis-
sion (ON HIGHWAY) Drain the lubricant while warm. Flush each unit with clean flushing
oil. 500,000 miles/
800,000 km
Main &
auxiliary
transmis-
sion
(Dana)
Main & auxiliary transmis-
sion (OFF HIGHWAY)
Drain the lubricant while warm. Flush each unit with clean flushing
oil.
XX
Main &
auxiliary
transmission
(Meritor)
Transfer Case Check the oil level; refill as required (see page 138). X X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —121— 22-01510 (R12/01)
Main &
auxiliary
transmission
(Meritor)
Transfer Case Drain lubricant while warm. Flush each unit with clean flushing oil. X
Main &
auxiliary
transmission
(ZFMeritor)
Freedomline Transmis-
sion
Change the oil (see page 138). 500,000 miles/
800,000 km
Air Intake Air intake piping, mount-
ing, and charge air cooler
Check the system for broken pipes, leaks, joint integrity, cleanli-
ness, and proper support (see page 173).
X
Engine air intake tubing Disassemble, clean, check for cracks, leaks, and joint integrity. X
Cold starting aids Check for leaks and proper operation (see page 81). X
Air cleaner Replace the element as indicated (see page 173). When required by the
air restriction indicator
Clutch Clutch pedal shaft Check for excessive looseness and lubricate (NLGI #2 grease). X
Clutch pedal Check for proper free pedal (see page 158). X
Clutch release linkage Check for excessive looseness and lubricate (NLGI #2 grease). X
Clutch release bearing Lubricate. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —122— 22-01510 (R12/01)
Clutch Clutch release shaft Lubricate. X
Cooling Hoses Check the radiator and heater hoses for leaks. X X
System Flush, drain, and refill with new coolant mix (see page 159). X
System Check concentration of antifreeze solution and condition of coolant.
(see page 159).
X
System Change coolant filter; add conditioner and supplemental cooling
additives (SCAs) (see page 159). X
Fan clutch housing Check for leaks (see page 172). X X
Tires &
Wheels
Tires Check inflation pressure (see page 146). Weekly “cold” using
calibrated gauge
Tires Inspect for cuts, irregular wear, missing lugs, sidewall damage, etc. X
Disc wheels Inspect the wheel disc for any cracks or surface irregularities.
Inspect the rim edge and bead seat area for damage. Replace any
damaged wheels - DO NOT ATTEMPT TO REPAIR.
X
Demountable rims Inspect the mounting ring, rim gutter, side ring, and lock ring for
damage; replace as required.
X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —123— 22-01510 (R12/01)
Tires &
Wheels
Wheel nuts and studs Check the tightness of the fasteners and tighten the fasteners to
the specified torque as required (see page 152).
X
Wheel nuts and studs Inspect for damaged hex corners, stripped or damaged threads,
and excessive corrosion; clean or replace as required.
X
Power
Steering
Reservoir Check the fluid level (see page 142). X
Reservoir (ON HIGHWAY) Drain, replace the filter, and refill (see page 142). X X
Reservoir (OFF HIGHWAY) Drain, replace the filter, and refill (see page 142). X X
Steering gear Check the lash of the sector shaft; adjust as required. X
Steering gear Grease the trunnion bearing (EP NLGI #2 lithium-based, moly-
filled, HD grease).
X
Steering gear Grease the input shaft seal (EP NLGI #2 lithium-based, moly-
filled, HD grease). X
Power assist cylinder Lubricate the ball joints. Inspect for leaking rod seals, damaged
ball joint boots, and damage to cylinder rod or barrel.
X
Hoses and tubes Check for leaks and chafing. X
Steering linkage Check all joints for excessive lash; replace as required (see page
168).
X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —124— 22-01510 (R12/01)
Power
Steering
Draglink tube clamp and
ball socket
Check the torque; tighten to specified torque value as required. X X
Pitman arm clamp bolt
and nut
Check the torque; tighten to specified torque value as required. X X
Steering intermediate shaft Check the torque on the pinch bolt and nut. X X
Steering intermediate shaft
U-joints (ON HIGHWAY)
Lubricate [EP NLGI #2 HD grease, +325° F to -10° F (+163° C to
-23° C) range].
XX
Steering intermediate shaft
U-joints (OFF HIGHWAY
or CITY DELIVERY)
Lubricate [EP NLGI #2 HD grease, +325° F to -10° F (+163° C to
-23° C) range].
XX
Draglink and tie rod arm ball
sockets (ON HIGHWAY)
Lubricate (EP NLGI #2 lithium-based, moly-filled, HD grease). X X
Steering intermediate shaft
U-joints (OFF HIGHWAY
or CITY DELIVERY)
Lubricate (EP NLGI #2 lithium-based, moly-filled, HD grease). X X
Fuel &
Tanks
Fuel tanks Inspect tanks, brackets, hoses, and fittings for correct location, tight-
ness, abrasion damage, and leaks; repair or replace as required.
X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —125— 22-01510 (R12/01)
Fuel &
Tanks
Fuel tank breathers Check for proper function; clean the drain hoses. X
Fuel tank straps Check the strap tightness; tighten to proper torque value as required:
-Aluminum tank: 30 Lb. ft. (41 N.m.)
-Cylindrical Steel tank: 8 Lb. ft. (11 N.m.)
XX
Fuel tank steps Check for snug fit of side plates against tank and tank straps.
Check for damaged or broken steps, missing bolts, and missing
grommet between tank and side plate. Replace missing or dam-
aged parts and adjust for fit as required.
X
Driveshafts Models 1610-1810 & SPL-
90 slip member & U-joints
Lubricate. X X
Model SPL-100 slip mem-
ber & U-joints
Lubricate. X
Models SPL-140/140HD/
170/170HD/250/250HD
slip members & U-joints
Lubricate. X
Models SPL-140XL/
170XL/250XL slip mem-
bers and U-joints (ON
HIGHWAY & LINE HAUL)
Lubricate. 360,000 miles/
576,000 km/
every 3 years
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —126— 22-01510 (R12/01)
Driveshafts Models SPL-140XL/
170XL/250XL slip mem-
bers and U-joints (OFF
HIGHWAY & CITY)
Lubricate. X
Battery
Boxes, Tool
Boxes, and
Steps
Battery cables Check the condition of the cables, cushion clamps, and routing.
Replace a cushion clamp if the rubber has deteriorated. Repair or
tighten terminals, and secure cables to prevent chafing. Replace
damaged cables (cuts, cracks, or excessive wear) (see page 162).
XX
Batteries Check for cracks and damage, electrolyte level, condition of termi-
nals, and tightness of holddowns (see page 162).
X
Battery box and tray Check the box integrity. Clean the drain tube and check for acid
leaks. Check condition of all equipment mounted under the box.
X
Electrical &
lights
Headlamps Check the aim and adjust as required. X
Warning lights in light bar Check at the ignition start position to verify bulbs function (see
page 53).
X
Turn signal Visual check. X
Stop lights Visual check. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —127— 22-01510 (R12/01)
Electrical &
lights
Reverse lights Visual check. X
Alternator Check operation and output. X
Alternator Check tightness of the pulley nut. X
Alternator Check the tension of the drive belt (see page 171). X
Alternator Check tightness of the terminal hex nuts. X
Starter Check torque on hex nuts. X
ECM connector Check the tightness of the ECM connector. X
Wheel sensors
Check for damaged sensors and connectors, and worn or frayed wires.
X
Fuel tank sending unit Check the mounting screws and electrical connections for worn or
damaged wires and connectors.
XX
Power supply harnesses
(engine, transmission, etc.) Check for worn or damaged insulation, corroded terminals, frayed
wires, and oil or fluid leaks on the connectors or wiring. X
Power supply harnesses
(engine, transmission, etc.)
Wash to remove excess grease. X
Cab struc-
ture, doors,
& hoods
Hood Lubricate the lower hood pivot (only if lube fittings are present). X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —128— 22-01510 (R12/01)
Cab, doors,
& hoods
Hinges and latch Lubricate with silicone spray. X
Body & cab holddown bolts Check the condition and tightness. X
Tilt pump Check the oil level; refill as required. X
Cab tilt system Check for hydraulic leaks. X
Heating &
Air Condi-
tioning
Air conditioner Operate the system. (NOTE: The air conditioning system is active
when the Defrost/Defog mode is selected.) X
Heater & air conditioner Perform the checks listed on page 175.X
Cab air filter Clean; replace after a maximum of three cleanings. X
Heater & air conditioner Full operational and diagnostic check. X
Exhaust System Check for leaks and proper support (see page 174).t X
Air Air compressor governor Replace air strainer. X
Air lines Check condition and routing to prevent chafing. X
System Lubricate
(see
page 156
)
.X
Inline filters Replace elements or clean with solvent. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —129— 22-01510 (R12/01)
Air Air dryer Perform the checks listed on page 157.X
Air dryer (ON HIGHWAY) Overhaul. 360,000 miles/
576,000 km
Air dryer (OFF HIGHWAY) Overhaul. X
Engine Basic Engine The maintenance and service interval recommendations for the
specific engine are the maintenance requirements specified in the
engine manufacturer’s Operations and Maintenance Manual
included with the vehicle. Strict adherence to these recommenda-
tions is required to maintain warranty coverage. The maintenance
and service interval recommendations for the engines vary signifi-
cantly, depending on the manufacturer and the model of the engine.
As a minimum, perform the operations listed below:
Fuel filter Drain, clean, and refill or replace as required (see page 167). X
Bypass oil filter Clean filter and change element. X
Block Clean with steam or solvent. X
Crankcase breather Clean. x
Manifold nuts Tighten to specified torque. X
Oil pan Capscrew Tighten to specified torque. X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —130— 22-01510 (R12/01)
Engine Drive pulleys Check for tightness. X
Turbocharger Check manifold and mounting. X
Radiator shutters Check controls. X
All lines and seals Check for leaks. X
Mounts Check for tightness. X
Fan hub Lubricate; check for air leaks. If vehicle is not equipped with an air
filter/dryer, check the inline filter to the fan hub (see page 172).
X
SYSTEM COMPONENT MAINTENANCE TASK
Recommended
PM Interval
I ABCDE
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —131— 22-01510 (R12/01)
Lubricant Specifications
In this section you will find the basic information you need to do the
routine lubrication your vehicle requires. Of course you will want to
schedule service more frequently if you are operating under severe
conditions such as extreme heat or cold, with very heavy loads, off-
road, etc. For any special service requirements, consult your service
manuals and your lubricant supplier. And please remember: one key
to keeping your truck running at top economy and in prolonging its life
is proper lubrication servicing. Neglecting this essential aspect of
vehicle care can cost time and money in the long run.
Engine
Proper engine lubrication depends on the outside temperatures
where you will be driving. Use the oil recommended for the conditions
you are most likely to be facing. You will find a complete engine lubri-
cation service guide in the Engine Operation Manual that came with
your vehicle. There, the engine manufacturer explains more fully all
the maintenance operations that you — and a qualified service
mechanic — need to perform on your engine.
WARNING! Handle lubricants carefully. Vehicle lubricants
(oil and grease) are poisonous and can cause sickness.
They can also damage the paint on the vehicle.
CAUTION:
Do not mix different types of lubricants. Mixing
lubricants (oil and grease) of different brands or types
could damage vehicle components; therefore, drain (or
remove) old lubricants from the unit before refilling it.
WARNING! Exhaust fumes from the engine contain carbon
monoxide, a colorless and odorless gas. Do not breathe
the engine exhaust gas. A poorly maintained, damaged or
corroded exhaust system can allow carbon monoxide to
enter the cab or sleeper. Entry of carbon monoxide into the
cab is also possible from other vehicles nearby. Failure to
properly maintain your vehicle could cause carbon monox-
ide to enter the cab/sleeper and causes serious illness.
CAUTION: Never idle your vehicle for prolonged periods of
time if you sense that exhaust fumes are entering the cab
or sleeper. Investigate the cause of the fumes and correct it
as soon as possible. If the vehicle must be driven under
these conditions, drive only with the windows slightly
open. Failure to repair the source of the exhaust fumes may
lead to personal harm.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —132— 22-01510 (R12/01)
Master Lubrication Index
Lubricant Symbol Key
BB: Ball Bearing grease
CB: Engine oil for mild to moderate requirements
CC/CD: Engine oil for severe requirements (MIL-L-2104B /
MIL-L-45199B w/ 1.85% max. sulfated ash content)
CD: Engine oil meeting API “Five engine test sequence”
CD50: SAE 50W synthetic transmission fluid
CE: Engine oil meeting severe duty service requirements for
direct-injection turbocharged engines.
CL: Multipurpose chassis grease
C4: Type C4 transmission fluid (torque fluid)
EP: Extreme Pressure Lubricant
GL: Straight mineral gear lubricant
HD: Hypoid Gear Oil, A.P.I. - GL-5, SAE 80W-90
HT: High Temperature grease (Timken Spec. 0-616)
MP: Multipurpose gear lubricant (MIL-L-2105B)
WB: Wheel Bearing grease (Timken Spec. 0-610)
NOTE: Keep the engine exhaust system and the vehicle’s
cab/sleeper ventilation system properly maintained. It is rec-
ommended that the vehicle’s exhaust system and cab/
sleeper be inspected
•
By a competent technician every 15,000 miles/24,000 km
•
Whenever a change is noticed in the sound of the
exhaust system
•
Whenever the exhaust system, underbody, cab or
sleeper is damaged
NOTE: The responsibility for meeting these specifications,
the quality of the product, and its performance in service
rests with the lubricant supplier.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —133— 22-01510 (R12/01)
Component Lubrication Index
Component Lubricant
Universal Joints EP
Drive Shaft Splines CL
Wheel Bearings (driven hubs) HD
Wheel Bearings (nondriven hubs) CD50
Wheel Bearings (all grease-lubri-
cated hubs)
WB
Steering Column CL
Alternator Bearing BB*
Fan Hub BB*
Power Steering Reservoir C4
Steering Drag Link CL
Steering Knuckles CL
Spring Pins CL
Clutch Release Bearings BB
Brake Shoe Anchor Pins HT
Brake Cam Bearings HT
Slack Adjusters CL
Starter Bearings CC
Turbocharger Aneroid CC
Water Pump BB*
Cab Tilt Hydraulic Reservoir Hydraulic Jack Oil, MIL-L-5056B
Speedometer Cables Lubriplate Aero or equivalent
*Consult manufacturer or lubricant supplier for special details.
02942
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —134— 22-01510 (R12/01)
Fuller Transmission Lubrication
Fuller transmissions are designed so that the internal parts operate in
a bath of oil circulated by the motion of gears and shafts. Grey iron
parts have built-in channels where needed to help lubricate bearings
and shafts. All parts will be amply lubricated if these procedures are
closely followed:
1. Maintain oil level; check it regularly.
2. Change oil regularly.
3. Use the correct grade and type of oil.
4. Buy oil from a reputable dealer.
Lubrication Change and Inspection
Highway Use
•
Refer to the Eaton Fuller transmission manual for servicing information.
•Refer to the oil change vs. temperature chart below for special oil
change information. The “intermittent peak temperature” is the
maximum temperature observed for a short time in a fully loaded
vehicle performing normally.
Off-Highway Use
•Refer to the Eaton Fuller transmission manual for servicing infor-
mation.
02944
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —135— 22-01510 (R12/01)
Recommended Lubricants
Allison Transmission Lubrication
Refer to your transmission manual (furnished separately) for lubrica-
tion information.
CAUTION: Exceeding the recommended oil change
intervals may be harmful to the life of the transmission
and the transmission oil cooler.
Type Grade
(SAE) Ambient
Temperature
Heavy Duty Engine
Oil MIL-L-2104B, C,
or D;
50 Above 10° F (-12° C)
API - SF, or API-CD
(Previous API desig-
nations acceptable)
40 Above 10° F (-12° C
30 Below 10° F (-12° C)
Mineral gear oil with
rust and oxidation
inhibitor API-GL-1
90 Above 10° F (-12° C)
80W Below 10° F (-12° C)
Synthetic Lubricant* 50 All
* See your Peterbilt dealer for approved brands.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —136— 22-01510 (R12/01)
Spicer Transmission Lubrication
It is extremely important to use the proper lubricants and maintain the
correct oil levels in Spicer units. This will ensure proper lubrication
and operating temperatures in these units.
Recommended Lubricants
The lubricants listed below are recommended, in order of preference,
for use in all Spicer mechanical transmissions, auxiliaries, and trans-
fer cases. Do not use extreme pressure additives such as those found
in multipurpose or rear axle-type lubricants. These additives are not
required in Spicer transmissions, and may in some cases create
transmission problems. Multipurpose oils, as a group, have relatively
poor oxidation stability, a high rate of sludge formation, and a greater
tendency to react with or corrode the steel and bronze parts.
Type Grade
(SAE) Ambient
Temperature
Heavy Duty Engine Oil MIL-L-2104D
or MIL-L-46152B, API-SF or API-CD
(MIL-L-2104B or C or MIL-L-46152
designations are acceptable)
30, 40, or 50 Above 0° F
(-18° C)
30 Below 0° F
(-18° C)
Mineral gear oil
(R & O type) API-GL-1
90 Above 0° F
(-18° C)
80 Below 0° F
(-18° C)
Synthetic Engine Oil meeting
MIL-L-2104D or MIL-L-46152B,
API-SF or API-CD
CD50
CD30 All
*Synthetic Gear Oil Meeting
MIL-2105C or API-GL5
EP75W90
EP75W140
All
*EP Gear Oils are not recommended when lubricant operating temperatures
are above 230° F (110° C).
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —137— 22-01510 (R12/01)
Oil Changes
An initial oil change and flush should be performed after the transmis-
sion has been placed in actual service. This change should be made
any time after 3000 miles (4800 km) but never longer than 5000 miles
(8000 km) of over-the-road service. In off-highway use, the change
should be made after 24 hours but before 100 hours of service have
elapsed.
Refilling
Remove all dirt around filler plug. Refill with new oil of the grade rec-
ommended for the existing season and prevailing service. Fill to the
bottom of the level testing plug positioned on the side of the transmis-
sion. Do not overfill the transmission. Overfilling usually results in oil
breakdown due to excessive heat and aeration from the churning
action of the gears. Early breakdown of the oil will result in heavy var-
nish and sludge deposits that plug up oil ports and build up on the
splines and bearings. Overflow of oil can also escape onto clutch or
parking brakes. When adding oil, do not mix different types of oil.
CAUTION: When adding oil, types and brands of oil should
not be intermixed because of possible incompatibility,
which could decrease the effectiveness of the lubrication
or cause component failure.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —138— 22-01510 (R12/01)
Meritor Transmission Lubrication
Lubrication Change and Inspection
•An initial oil change and flush should be performed after the trans-
mission has been in service for 5000 miles (8000 km).
•Refer to the Meritor Transmission manual for servicing information.
Recommended Lubricants
Type Of Lubricant Grade (SAE) Ambient
Temperature
Heavy-Duty Engine Oil
A.P.I.-CD, -CE, -SF or
-SG (Previous A.P.I. desig-
nations acceptable)*
MIL-L-2104B, C, or D*
50 Above 10° F (-12° C)
40 Above 10° F (-12° C)
30 Below 10° F (-12° C)
Mineral Gear Oil with Rust
and Oxidation Inhibitor,
A.P.I.-GL-1*
90 Above 10° F (-12° C))
80 Below 10° F (-12° C)
Synthetic Oil, Meritor Speci-
fication 0-81 *@
50 All
Mobil Trans SHC50 Syn-
thetic#
50 All
* Multi-weight and EP gear oils are not recommended.
DO NOT MIX OILS IN THE TRANSMISSION.
@ See your Peterbilt dealer for Meritor-approved lubricant brands.
# Freedomline transmission
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —139— 22-01510 (R12/01)
Meritor Axle Lubrication
Under Meritor’s Advanced Lube Rear Drive Axle program, the axles
listed below are exempt from an initial lubricant change:
Meritor rear axles that do not appear on the list above will continue to
require an initial drain at 3000-5000 miles (4800-8000 km).
•Refer to the Meritor Field Maintenance Manual for a particular axle
for lubricant specifications.
•See your Peterbilt dealer for Meritor-approved lubricant brands.
•Refer to the following chart for lubricant change intervals:
•Change the lubricant filter every 120,000 miles (192,000 km). Top
off the lubricant level with a similar lubricant.
NOTE: Axles utilized in 100% off-highway use are not eligi-
ble for Meritor’s Advanced Lube Rear Drive Axle program.
AVAILABLE ADVANCED LUBE AXLES
RS-17-145 RS-23-180 RT-40-145 RT-44-145P
RS-19-145 RS-26-180 RT-40-145P RT-46-160
RS-21-145 RS-30-180 SQ-100A RT-46-160P
RS-23-160 RT-34-145 SQ-100AP RT-52-160
RS-23-161 RT-34-145P RT-44-145 RT-52-160P
Application Type Of Lubricant Mileage Interval
Linehaul Synthetic 240,000 Miles (384,000 km)
Synthetic with Pump
and Filter
500,000 Miles (800,000 km)
Mineral Base 120,000 miles (192,000 km)
City Delivery Synthetic 120,000 miles (192,000 km)
Synthetic with Pump
and Filter
240,000 Miles (384,000 km)
Mineral Base 120,000 miles (192,000 km)
Vocational Synthetic 120,000 miles (192,000 km)
Synthetic with Pump
and Filter 120,000 miles (192,000 km)
Mineral Base 120,000 miles (192,000 km)
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —140— 22-01510 (R12/01)
Eaton/Dana Axle Lubrication
•The original mineral-based lubricant must be drained within 3000-
5000 miles (4800-8000 km) on all Eaton axles. This initial change
is very important because it flushes out break-in contaminants that
might otherwise cause premature wear.
•No initial drain is required on Eaton axles that are factory filled with
an Eaton-approved synthetic lubricant.
•Mineral-based lubes must be drained within the first 5000 miles
(8000 km) if converting to an Eaton-approved synthetic lube.
•Change the lubricant within the first 5000 miles (8000 km) of oper-
ation after a carrier head replacement, regardless of the lubricant
type.
•Refer to the Eaton Field Maintenance Manual for a particular axle
for lubricant specifications.
•See your Peterbilt dealer for Eaton-approved lubricant brands.
•Refer to the chart below for lubricant change interval.
Type of
Lubricant On-
Highway
Miles(km)
Maximum
Change
Interval
On/Off Highway
Severe Service
Miles (km)
Maximum
Change
Interval
Mineral-Based 120,000
(192,000)
Yearly 60,000
(96,000)
Yearly
Eaton-Approved
Synthetic
240,000
(384,000)
2 Years 120,000
(192,000)
Yearly
Eaton-Approved
Synthetic in axle
with extended
drain interval
option
360,000
(576,000)
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —141— 22-01510 (R12/01)
Wheel Bearing Lubrication
Oil-lubricated Driven Hubs
Use hypoid oil, A.P.I.-GL-5 SAE 80W-90 or equivalent. A minimum of
1 quart (921 ml) of oil is required for proper lubrication of each drive
hub. Add oil through the filler hole in the hub; if none, add oil through
the differential filler hole. (Note: Remember to replace vent plug or
threaded filler plug when done.) Allow time for the oil to seep through
the bearings when initially filling a hub. Maintain the differential oil
level by adding oil until its surface is even with the bottom of the filler
hole (see page 133).
Oil-lubricated Nondriven Hubs
Use CD50 synthetic transmission fluid SAE 50W or equivalent. A min-
imum of 9 oz. (270 ml) of lubricant is required for proper lubrication of
an LMS™ hub; 10 - 13 oz. (295 - 400 ml) is required for a non-LMS
hub, depending on wheel design. Allow time for the fluid to seep
through the bearings when initially filling a hub. When properly filled,
the fluid level will lie between the fluid level line and 1/4” above the
line. (Note: Remember to replace vent plug when done.)
Grease-Lubricated Hubs
Repack the hub bearing with clean wheel bearing grease after disas-
sembling, cleaning, and inspecting.
Universal Joint Lubrication
Refer to the Spicer Universal Joints and Driveshafts service manual
and lubrication specifications.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —142— 22-01510 (R12/01)
Steering Gear Lubrication
Inspection
1. Check the fluid level; add fluid if required.
2. Check fluid for contamination, discoloration, or burnt smell; correct
source of such problems before replacing fluid & filter.
Replacement
1. Replace both the fluid and filter as per the chart below.
2. Bleed the system if necessary
.
*Extremely low temperatures may require lower viscosity fluids; con-
sult your Peterbilt dealer for recommendations
@See TRW or Sheppard Service Manuals for additional fluid listings
Servicing Specific Systems And Units
This section will help you keep your Peterbilt vehicle in good running
condition. There are a number of checks you can do, and you may be
able to do some of the service work yourself. But please: let your
dealer’s service department do any work you don’t have the tools or
skill to perform. Authorized service mechanics are trained in the proper
technical and safety procedures to fix your Peterbilt vehicle right.
CAUTION: When adding fluid, be sure to use fluid of the
same type. Do not mix different fluids. While many flu-
ids have the same description and intended purpose,
they should not be mixed due to incompatible additives.
If incompatible (insoluble) fluids are mixed in a power
steering system, air bubbles can be produced at the
interface of the two fluids. This can cause cavitation,
which reduces the lubrication between moving parts in
the gear. This could result in worn components.
NOTE: Before removing reservoir cover, wipe outside of cover
so that no dirt can fall into the reservoir.
Steering
Gear Fluid * Inspect
[miles(km)] Replace
(miles/months)
TRW Type C-4 Fluid Every 15,000
(24,000) Every 240,000
(384,000)/24
Sheppard Type C-4 Fluid Every 15,000
(24,000)
Every 240,000
(384,000)/24
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —143— 22-01510 (R12/01)
Brake Adjustment
To operate your vehicle safely and profitably, you need some under-
standing of its brake systems. For more on brakes, see the Index,
under Brakes.
Brake adjustment and brake balance must be set carefully to (1)
make the most efficient use of the forces available for braking and (2)
allow equal stopping forces at all wheels.
Once a brake system is set to specifications, changing any one of its
components or any combination of components may cause the sys-
tem to not work as well. All parts have to work together to perform as
they should. Any replacement components in your brake system
should be exactly equal to the original components. Any changes
from the original specifications can affect the whole system.
All of the following areas are interrelated and must conform to original
specifications:
•Tire Size •Brake Linings
•Cam Radius •Brake Chambers
•Wedge Angle •Slack Adjusters
•Drum Radius
WARNING! It is dangerous to work on a vehicle without
the right know-how and proper tools. You could be
badly injured, and you could damage the vehicle. Do
only work you know you are fully capable of doing, and
for which you have the right tools.
WARNING! To prevent uncontrolled vehicle movement and
reduce risk of personal injury, park the vehicle on a hard
level surface, apply the parking brake, and chock all
wheels securely.
CAUTION: The air brake system of this vehicle was con-
figured for ONE of the following operations: tractor or
truck, and complies with the respective portions of
FMVSS 121. A tractor shall not be operated or config-
ured as a truck, nor shall a truck be operated or config-
ured as a tractor, without significant modifications to
the air brake system in order to retain compliance with
FMVSS 121.
Contact your Peterbilt dealer for instructions.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —144— 22-01510 (R12/01)
All vehicle operators should check their brakes regularly. Always
adjust your brakes when they are cool.
Perform these checks & adjustments every 15,000 miles (24,000 km):
•Have brake linings inspected by a qualified mechanic for wear at
least every 15,000 miles. In severe service or off-highway applica-
tions inspect the linings more frequently.
•Check the air system for leaks:
1. Build up air pressure in the system to the governor cut-out point.
2. Stop the engine.
3. Release the parking brakes (push in the yellow knob).
4. Watch the rate of air pressure drop. The rate of drop should not be
more than 2 psi (14 kPa) per minute.
5. Now start the engine and build up the air pressure again.
6. Stop the engine. Ensure that the parking brakes are still released
(i.e., the yellow knob is pushed in).
7. Fully apply the service brakes.
8. Watch the rate of air pressure drop registered by the air gauge. The
rate of drop should not be more than 3 psi (21 kPa) per minute.
9. If you find excessive leakage, a leakage test should be made at the
air line connections and at all air brake control units. To perform a
leakage test, refer to the detailed instructions in the Peterbilt Mainte-
nance Manual, or take your vehicle to an authorized Peterbilt dealer.
Readjust the brakes if pushrod travel reaches 1 3/4 inches (44.4 mm)
for steer axle brakes or 2 inches (51 mm) for rear axle brakes [2 1/4
inches (57 mm) for Type 36 chambers] at 80 - 90 psi (550 - 620 kPa)
application pressure.
WARNING! A nonconforming part in your brake system
could cause an accident. Sizes and types are so related
to one another that a seemingly unimportant change in
one may result in a change in how well your brakes work
for you on the road. If parts don’t work together prop-
erly, you could lose control of your vehicle. Be sure any
replacement parts in your brake system conform exactly
to original specifications.
WARNING! Brake linings with a thickness below the speci-
fied minimum will have lining rivets exposed. Use of such
linings can damage the brake drum and also reduce brake
efficiency, which could cause an accident or system fail-
ure.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —145— 22-01510 (R12/01)
If you have manual slack adjusters:
•Adjust the slack adjuster until the brake is tight.
•Then back off two or three clicks until the shoes are just free. You
can determine this by spinning the wheel or tapping on the drum
and listening for a clear ringing sound.
Normal pushrod travel is about 1 to 1 3/8 inch front and rear after
brakes have been properly adjusted.
Correct Pushrod Travel
If you have automatic slack adjusters:
Constant manual adjustment of automatic slack adjusters can
shorten the life of your internal clutch. If proper stroke cannot be
maintained, replace the slack adjuster.
Operational Checks of Automatic Slack Adjusters
•Measure brake chamber stroke with the spring brake released and
the air pressure at 100 psi (690 kPa) minimum. Correctly installed
and functioning auto slack will produce the following strokes:
CAUTION: The brake adjuster alone does not ensure
proper brake operation. Inspect all brake components. All
brake components work together and must be checked
periodically to ensure the brake system works properly.
See the Peterbilt Master Maintenance Manual for more
information on brake maintenance.
02945
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —146— 22-01510 (R12/01)
-Type 36 chamber (rear brakes) should have a 1 1/2 inch to 2 1/4
inch (38 mm to 57 mm) stroke.
-Type 30 chamber (rear brakes) should have a 1 1/2 inch to 2 inch
(38 mm to 51 mm) stroke.
-Type 16, 20, & 24 chambers (front brakes) should have a 1 inch
to 1 3/4 inch (25.4 mm to 44.4 mm) stroke.
•If the stroke exceeds the above specifications, check to verify that
the slack adjuster is working. With the air system at 100 psi
(690 kPa) or more, apply the brake. If adjustment is necessary and
the slack adjuster is working, the adjusting hex nut will rotate dur-
ing the chamber return stroke. Installing a wrench on the hex nut
will make this easier to see. On each stroke after the first, the
amount of adjustment and chamber travel will be less.
Tires, Wheels, And Rims
Tires
Your tires are a very important part of your vehicle’s whole braking
system. How fast you can stop depends in large measure on how
much friction you get between the road and your tires.
In addition, keeping your tires in good condition is essential to the
safe, efficient operation of your vehicle. Regular, frequent inspection
and the right care will give you the assurance of safe and reliable tire
operation. Here are some tips on maintaining your tires.
1. Underinflated Tires. Low pressure is a tire’s worst enemy. Under-
inflation allows tires to flex improperly, causing high temperatures
to build up. Heat causes early tire damage such as flex break,
radial cracks, and ply separation. Low pressure may affect control
of your vehicle, especially at the front wheels. Most tire wear
problems are caused by underinflation as the result of slow leaks,
so you’ll want to check tire pressure regularly.
Checking Inflation Pressure
Give your tires a visual test every day, and check inflation with a
gauge every week.
WARNING! Underinflated tires could cause a serious
accident. The extra heat caused by underinflation can
cause sudden tire failure. Low pressure may affect con-
trol at the front wheels. You could be seriously hurt in
an accident that could result. Keep your tires inflated to
the manufacturer’s recommended limit.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —147— 22-01510 (R12/01)
•When checking tire pressure, inspect each tire for damage to side-
walls, cuts, cracks, uneven wear, rocks between duals, etc. If a tire
appears underinflated, check for damage to the wheel assembly.
Don’t forget to check between dual wheels. If you find wheel dam-
age, have an expert tire service repair it.
•Maximum tire pressure will be indicated on the sidewall of a tire.
•Check pressure only when the tires are cool. Warm or hot tires
cause pressure buildup and will give you an inaccurate reading.
So never deflate a warm tire to the specified pressure.
•Lower tire pressure does not give you more traction on ice or
snow. This is an old myth that refuses to die. Underinflation actu-
ally reduces traction, steering control and tire load capacity.
2. Overloaded tires. Overloading your truck is as damaging to your
tires as underinflation. The following chart shows how neglect or
deliberate abuse can affect the life of your tires.
3. Overinflated tires. Too much air pressure reduces the tire tread
contact area and results in rapid wear in the center of the tread.
The chart on page 150 gives you the right load and inflation rates for
different tire sizes. Please follow it for the safest and most economical
use of your tires.
WARNING! You can be badly injured trying to fix tires.
Don’t mount or dismount a tire yourself; have any wheel
service performed by an expert. And stand away from
the tire assembly while the expert is working.
EFFECT OF LOAD PRESSURE ON TIRE LIFE
Vehicle
Load
Normal 20%
Over
40%
Over
60%
Over
80%
Over
100%
Over
Tire
Pressure
Normal 20% Low 30% Low 35% Low 45% Low 55% Low
Expected
Total Tire
Mileage
Normal 70% 50% 40% 30% 25%
WARNING! Overinflated tires can cause accidents.
They wear more quickly than properly inflated tires.
And they are more subject to punctures, cracks, & other
damage. They could fail and cause you to lose control
of your vehicle. Be sure all tires are inflated correctly
according to the manufacturer’s recommendations.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —148— 22-01510 (R12/01)
4. Matching tires. Be sure to buy matched tires for your vehicle,
especially on the rear axles. Mismatched tires can cause stress
between axles and cause the temperature of your axle lubricant to
get too hot. Matched tires will help your driveline last longer and
will give you better tire mileage.
5. Replacing Tires.
Front: Replace front tires when less than 4/32 in. of tread remains.
Check at three places equally spaced around the tire.
Drive Axles or Trailers: Replace tires on drive axles or trailers when
less than 2/32 in. of tread depth remains in any major groove. Check
at three places equally spaced around the tire.
See next illustration for recommended measuring points for tread
depth:
Steer Tire Drive Tire
WARNING! Mismatched tires are dangerous. Mixing
tire types may lessen the road-holding ability of both
types of tires. You can lose control and be injured.
Never mix tires of different design, such as steel belted
radials and bias ply tires. Make sure, too, that you use
the right size tires on each wheel. Some vehicles
require different sizes on front and rear wheels. For
safety, always use the recommended size and type of
tires.
WARNING! Regrooved tires or tires with reinforcement
repairs can be dangerous on steering axles. They could
cause you to lose control of your vehicle. Do not install
regrooved or reinforcement-repaired tires on your steer-
ing axles.
02946
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —149— 22-01510 (R12/01)
6. Tire chains. If you need tire chains, install them on both sides of
each driving axle.
NOTE: To prolong your tires’ life and make them safer, have
their radial and lateral run-out checked at your dealer. And
of course you should have your tires balanced any time you
change a tire.
CAUTION: Chains on the tires of only one tandem axle
can damage the driveline U-joints and the interaxle dif-
ferential. Your repairs could be costly & time-consum-
ing.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —150— 22-01510 (R12/01)
Tire Load and Inflation Tables
NOTE:
1. Pressure listed is the minimum for the load.
2. All tire load figures are in pounds.
3. Figures in Bold face indicate maximum recommended load.
Source: Bridgestone Tire
Load Range Letters and Corresponding Ply Rating
(E = 10 ply; F - 12 ply; G - 14 ply; H - 16 ply)
SINGLE RADIAL TIRES FOR VEHICLES IN HIGHWAY SERVICE
Tire
Size
Load
Range
Tire Load Limits At Various Cold Inflation Pressures (psi)
70 75 80 85 90 95 100 105 110 115 120 125
11R22.5 G 4530 4770 4990 5220 5420 5640 5840 6040
11R22.5 H 4530 4770 4990 5220 5430 5640 5840 6040 6240 6430 6610
11R24.5 G 4820 5070 5310 5550 5780 6000 6210 6430
11R24.5 H 4820 5070 5310 5550 5780 6000 6210 6430 6630 6240 7030
275 / 70R22.5 E 4385 4580 4765
275 / 70R22.5 F 4385 4580 4765 5010 5220 5425
275 / 70R22.5 G 4385 4580 4765 5010 5220 5425 5630 5830 6025
275 / 70R22.5 H 4385 4580 4765 5010 5220 5425 5630 5830 6025 6220 6410 6600
295 / 75R22.5 G 4500 4725 4945 5155 5370 5575 5780 5980 6175
285 / 75R24.5 G 4545 4770 4990 5210 5420 5675 5835 6040 6175
DUAL RADIAL TIRES FOR VEHICLES IN HIGHWAY SERVICE
11R22.5 G 4380 4580 4760 4950 5120 5300
11R22.5 H 4380 4580 4760 4950 5120 5300 5470 5630 5800
11R24.5 G 4660 4870 5070 5260 5450 5640
11R24.5 H 4660 4870 5070 5260 5450 5640 5820 6000 6170
275 / 70R22.5 E 4335
275 / 70R22.5 F 4335 4560 4750 4935
275 / 70R22.5 G 4335 4560 4750 4935 4095 4280 4420 4540
275 / 70R22.5 H 4335 4560 4750 4935 4095 4280 4420 4540 4850 5070
295 / 75R22.5 G 4500 4690 4885 5075 5260 5440 5675
285 / 75R24.5 G 4540 4740 4930 5205 5310 5495 5675
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —151— 22-01510 (R12/01)
Hub Pilot Mount Ball Seat Mount
Hub, Drum, and Stud Assembly
Wheels
Wheel Nuts
The hub pilot mounting system uses
M22x1.5 metric threads (about 7/8
in. dia.). The stud stands out at least
1.9 in. beyond the brake drum. All
studs are right hand threads. Pilot
bosses machined on the hub fit
tightly to the wheel center bore.
The ball seat mounting uses 3/4 x 16
or 1-1/8 x 16 threads. The dual
mounting studs provide 1.3 - 1.44 in.
standout. Right hand and left hand
threads are required. Inner and
outer cap nuts center the wheels by
seating against wheel ball seats.
Pilot mount wheels have stud holes
that are reamed straight through (no
ball seats). Center bore diameter is
8-21/32 in. Budd Uni-Mount - 10
wheels have UNIMOUNT stamped
on the disc.
Ball seat wheels have spherical
chamfers machined on each stud
hole. Center bore diameter is 8-23/
32 in.
Nut has a hex body and a flange for
clamping against wheel face. Hex
size is 33 mm (same as 1-5/16 in.).
Inner and outer cap nuts mate with
spherical chamfers on wheels. Inner
nut has 13/16 in. square end. Outer
nut has 1-1/2 in. hex.
WARNING! Mismatched wheel components are danger-
ous. Equipment that does not exactly match original
specifications or that is mismatched could cause your
wheels to break and separate from the vehicle. The
resulting accident could be very serious. Each mount-
ing system is engineered for use only with its correct
mating part. Be sure properly matched components are
used for each type of mounting.
02949
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —152— 22-01510 (R12/01)
Wheel Cap Nut Torque
At the first 100 miles, have all wheel cap nuts torqued to their speci-
fied value. After that, check wheel cap nuts at least once a week.
Contact the Service Department at your dealership for information on
the proper installation procedure for the wheels on your truck. This is
a job you may not be able to do yourself. You need the right torquing
equipment to do it.
Wheel Bearing Adjustment
For safe, reliable operation and adequate service life, your wheel
bearings must be checked and adjusted properly. The person best
equipped to do this is your authorized dealer’s service mechanic.
Disc Wheels
To check the torque on disc wheels, follow the crisscross sequence
below. See the Specifications chart for proper torque specification.
Crisscross Sequence For Disc Wheels
Demountable Rims
To check the torque on demountable rims, follow the crisscross
sequence shown on the next page. See the Specifications chart for
proper torque specification.
WARNING!
•
Grooves in the wheel disc or other damage to the disc
can lead to a serious accident. The disc will be weak-
ened and can eventually come off, maybe causing you
to lose control of your vehicle. Be sure to use the right
components and the right tools.
•
The end of the wheel wrench must be smooth. Burrs
on the end of the wrench can tear grooves in the disc,
especially on aluminum wheels. These grooves may
lead to cracks in the disc, and can cause it to fail.
02950
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —153— 22-01510 (R12/01)
Crisscross Sequence For Demountable Rims
WARNING! Use only components marketed by
PACCAR Parts. Use of non–original equipment could
cause wheel breakage and wheel separation from vehi-
cle. Each mounting system is engineered only for use
with its correct mating part. Be sure that properly
matched components are used for each type of mount-
ing. The comparison chart on page 142 illustrates the
differences between parts used in hub–piloted mount
and ball seat mount applications. Only PACCAR Parts
supplied hub–piloted or ball–seat mounted wheels may
be used on this vehicle.
•
If you are not fully qualified and not equipped with the
proper tools and equipment, do not attempt to raise
the vehicle or remove or install the damaged tire and
wheel assembly. Obtain expert help. A person can be
seriously injured and/or damage can result from using
the wrong service methods. Truck tires and wheels
should be serviced only by trained personnel using
proper equipment. Do not reinflate a tire that has been
run flat or is seriously low on air without first removing
the tire from the rim and inspecting for damage.
•
Follow OSHA regulations per section 1910.177.
•
Do not exceed the speed rating of tires. Exceeding the
speed rating may result in sudden tire failure and loss
of vehicle control.
•
Follow all warnings and cautions contained within the
tire and wheel manufacturers literature.
•
Only properly trained personnel should service tire
and rim assemblies
02951
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —154— 22-01510 (R12/01)
Vehicle Loading
GVW: GVW is the Gross Vehicle Weight. This is the TOTAL WEIGHT
your vehicle is designed to carry. Never carry so heavy a load that you
exceed the GVW rating of your Peterbilt vehicle.
Axle Weight: Your front and rear axles are rated according to the load
they are designed to carry. You will find this number listed on the
driver’s door frame.
Load Distribution: Be sure any load you carry is distributed so that no
axle has to support more than its load limit.
CAP NUT TORQUE SPECIFICATIONS (R12/01)
WHEEL AND NUT
CONFIGURATION
STUD SIZE
TORQUES FOR INNER &
OUTER CAP NUTS
Lb. Ft. N.m
Stud-Piloted Disc
Wheels
3/4”-16 Inner
1 1/8”-16 Outer
450-500 610-680
Heavy Duty Stud-
Piloted Disc Wheels 15/16”-12 Inner
1 5/16”-12
Outer
750-900 1025-1225
PHP-10; Budd Uni-
Mount-10; WHD-8
M22 x 1.5-6H 450-500 610-680
Cast Spoke Wheel
Assembly
1/2” Dia.
5/8” Dia.
3/4” Dia.
Rim Clamp
Nut Torque
80-90 110-120
160-185 220-250
225-245 305-335
WARNING! The components of your vehicle are
designed to provide satisfactory service if the vehicle is
not loaded in excess of either the gross vehicle weight
rating (GVWR) or the maximum front and rear gross axle
weight ratings (GAWRs). Axle weight ratings are listed
on the driver’s door edge. Supervise all loading to
ensure that (1) the Gross Vehicle Weight Rating (GVWR)
is not exceeded and (2) the load is distributed correctly
so that the weight distribution is within the limits of the
front and rear axle load ratings. Severe damage to your
vehicle, difficult handling, or an accident could occur if
your vehicle is not loaded properly.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —155— 22-01510 (R12/01)
WARNING! An unevenly distributed load or a load too
heavy over one axle can affect the braking and handling
of your vehicle and cause an accident. Even if your load
is under the legal limits, be sure it is distributed evenly.
03002
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —156— 22-01510 (R12/01)
Your Vehicle’s Air System
The operation of the vehicle’s braking system and many vehicle
accessories depends upon the storage and application of a high-
pressure air supply.
Your vehicle’s compressor takes outside air and compresses it, usu-
ally to 100-120 psi. The compressed air then goes to the reservoirs to
be stored until needed. When you operate your air brakes, the stored
compressed air flows into the chambers where it is used to apply your
truck and trailer brakes. That is why, when you push down on your
brake pedal, you don’t feel the same amount of pressure on the pedal
that you do when you apply the brakes on your car. All you are doing
on your truck is opening an air valve to allow air to flow into the brake
chambers.
Air Supply System
Contamination of the air supply system is the major cause of prob-
lems in air-operated components such as brake valves, wiper motors,
and suspension height control valves. To keep contaminants to the
lowest possible level, follow these maintenance procedures.
WARNING! Prior to the removal of any air system com-
ponent, always block and hold the vehicle by a secure
means other than the vehicle’s own brakes. Depleting
air system pressure may cause vehicle to roll. Keep
hands away from chamber push rods and slack adjust-
ers, they may apply as system pressure drops.
•
After completing any repairs to the air system, always
test for air leaks, and check the brakes for safe opera-
tion before putting the vehicle in service.
•
Never connect or disconnect a hose or line containing
air pressure. It may whip as air escapes. Never remove
a component or pipe plug unless you are certain all
system pressure has been depleted.
•
Never exceed recommended air pressure and always
wear safety glasses when working with air pressure.
Never look into air jets or direct them at anyone.
•
Never attempt to disassemble a component until you
have read and understood recommended procedures.
Some components contain powerful springs and
injury can result if not properly disassembled. Use
only proper tools and observe all precautions pertain-
ing to use of those tools.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —157— 22-01510 (R12/01)
Daily
•Drain moisture from the supply and service air tanks.
•Operate air devices to circulate lubricants within the unit.
Periodically
•Clean filter screens ahead of the valves by removing the screens
and soaking them in solvent. Blow them dry with pressurized air
before reinstalling them.
Twice a Year
•Add approximately 1/4 oz. (7.5 ml) of light viscosity lubricant to the
air line leading to the wiper motor. Acceptable lubricants are Dow
Corning 200 fluid, 200 CS viscosity, and Sprague Wiper Lube. If
you have alcohol dryers installed in the air system, the alcohol can
wash away lubricants from the wiper motors.
•Maintain the air compressor to prevent excessive oil by-pass. See
your shop manual for maintenance details.
•Replace worn seals in valves and air motors as they are needed.
Air Dryer
Every 900 operating hours or 30,000 miles/48,000 km or 3 months,
check for moisture in the air brake system by opening reservoirs,
drain cocks, or valves and checking for the presence of water. A table-
spoon of water in a reservoir would point to the need for a desiccant
cartridge change. However, the following should be considered first:
•Air usage is exceptionally high/abnormal for a highway vehicle.
This may be due to accessory air demands or some other unusual
air requirement that doesn’t allow the compressor to load/unload
in a normal fashion or it may be due to excessive leaks in the air
system.
WARNING! If the supply and service tanks are not drained
at the recommended frequency, water could be sent to all
air lines and valves. This could cause corrosion, which
could compromise the brake system safety and potentially
cause an accident.
CAUTION: Don’t use penetrating oil, brake fluid, or wax-
based oils in the air system. These fluids may cause
severe damage to air system components.
NOTE: A small amount of oil in the system may be normal
and should not, by itself, be considered reason to replace a
desiccant cartridge; oil-stained desiccant can function ade-
quately.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —158— 22-01510 (R12/01)
•When more than a 30-degree F (17-degree C) range of tempera-
ture occurs in one day, small amounts of water can accumulate in
the air brake system due to condensation. Under these conditions,
the presence of small amounts of moisture is normal and should
not be considered as an indication that the dryer is not performing
properly.
•An outside air source may have been used to charge the air sys-
tem, in which case this air did not pass through the drying bed.
Transmission And Drive Train
Clutch Adjustment
Clutch pedal free travel is usually 1 3/4 in. to 2 in. (34 to 51 mm). This
should be your guide for determining whether your truck needs clutch
adjustment. Some vehicles have automatic clutch adjustment. If yours
doesn’t have this feature, adjustment will have to be done by a trained
certified mechanic. Have the adjustment done before clutch pedal
free travel is reduced to the minimum allowable 1/2 in. (13 mm).
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —159— 22-01510 (R12/01)
Engine Cooling System
What to Add to Your Cooling System
Water
Water must be clean & free of corrosive and scale-forming chemicals.
Your drinking water may not be good for your vehicle. Approved addi-
tives help neutralize water’s harmful effects on your cooling system.
Ask your dealer to recommend the best ones for you.
If the cooling system in your truck has a treated spin-on water filter,
install the service filter on all B checks. See the Preventive Mainte-
nance Schedule in this manual. For more detailed recommendations
check with the service department at your dealership or check the
engine manufacturer’s operation and maintenance manual.
If, in an emergency, the radiator was filled with water known to contain
gypsum, sulfur, or chlorine:
1. Drain the cooling system as soon as possible.
2. Flush the system.
3. Replace the filters.
4. Refill with premixed coolant. Consult your maintenance manual for
the correct filters to install.
Low Silicate Antifreeze
Always install a low silicate antifreeze. Premix your coolant to main-
tain the correct proportion of antifreeze and coolant conditioner
chemicals. Install only enough low silicate antifreeze to provide the
required protection against freezing.
The chart on the next page shows the temperature protection pro-
vided by low silicate ethylene glycol antifreeze in relation to the pro-
portion mixed with water.
WARNING! Removing the radiator cap on a hot engine
can cause scalding coolant to spray out and burn you
badly. If the engine has been in operation within the pre-
vious 30 minutes, be very careful in removing the radia-
tor cap.
Protect face, hands, and arms against escaping
fluid and steam by covering the cap with a large, thick rag.
If you see any steam or coolant escaping, don’t try to
remove it until the radiator cools down. If you see noth-
ing escaping, still remove the cap very slowly and care-
fully. Be ready to back off if any steam or coolant begins
to escape.
WARNING! Handle coolant and antifreeze carefully. Ethyl-
ene glycol antifreeze is poisonous. Store in original fluid
container only, and always keep out of reach of children.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —160— 22-01510 (R12/01)
Antifreeze Mixture: A 53% mixture of low silicate antifreeze with 47%
water is sufficient for year-round normal operation. This will normally
protect your engine from freezing and boil-over. Note in the chart that
100% antifreeze is no more effective than a 30% mixture.
Some Tips about Additives:
•If you add supplemental coolant additives to your radiator, main-
tain them at the recommended levels. Read the label carefully.
Too much additive could harm your vehicle.
•Antifreeze solutions containing antileak additives may quickly
restrict your water filter. If this happens, your filter won’t work. So
stay away from antileak additives.
•Don’t add rust inhibitors, radiator sealants, or water pump lubri-
cants containing soluble oil to the coolant. These additives can
cause the anticorrosion chemicals not to work.
Topping Up (For a Standard or Low Flow System)
With the engine cold, top up with premixed coolant. Add the coolant
through the pressure cap neck on the surge tank or recovery bottle.
The surge tank or recovery bottle is on top of the radiator, on the fire-
wall, on the service module, or on the front of the cab. For the proper
level, see illustration on next page.
Refilling Your Radiator
1. Be sure the radiator and engine block drains are closed.
2. Move the heater control to maximum heat position.
Antifreeze
(percent by
volume)
0 102030405053576068708090100
Temp.
Protec-
tion
Deg
C
0 -4 -9 -16 -24 -36 -40 -46 -53 -68 -65 -49 -35 -16
Deg
F
+32 +24 +16 +4 -12 -34 -40 -50 -63 -92 -85 -57 -31 +4
NOTE: Never exceed a 64/36 antifreeze/water mix ratio, it
will increase the risk of silicate drop-out. Additionally, it may
not increase antifreeze protection, and it could decrease it.
CAUTION: Never install 100% antifreeze for top-up cool-
ant. It could damage your vehicle.
NOTE: If frequent topping up is necessary and there are no
visible signs of coolant leaks when the engine is cold, check
for leaks with the engine operating at normal operating tem-
perature.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —161— 22-01510 (R12/01)
3. Remove the surge tank pressure cap.
Surge Tank
4. Through the surge tank, fill the system with premixed coolant.
Pour it in a steady flow until the radiator is full.
5. Start the engine.
6. Idle at low RPM.
7. Complete the filling. Do it as quickly as possible.
8. Idle the engine until it reaches normal operating temperature.
9. Fill the radiator as necessary to raise the coolant level to the
proper Replace the surge tank pressure cap.
Check the coolant level after each trip when the engine has cooled.
Add coolant as necessary. You may find your coolant level is not up
to the correct level soon after you have filled the radiator. This may be
because all the trapped air in the system has not yet been purged. It
takes a little time for all the air to leave the system after you fill your
radiator.
NOTE: Do not overfill a cooling system. Excess coolant may
result in overflow, loss of antifreeze, and reduced corrosion
protection. For a cold engine, the proper coolant level is 1 in.
below the radiator cap seal. For an operating engine at nor-
mal temperature, coolant should be even with the radiator
cap seal.
03003
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —162— 22-01510 (R12/01)
Electrical
Battery Care
Regular attention to the charging system will help prolong the service
life of your batteries. Here are some common causes of battery fail-
ure:
•Overcharge: This condition may result from improper voltage regu-
lator adjustment. It results in overheating of the battery, warped
plates, and evaporation of electrolyte.
•Undercharge: Your voltage regulator may be malfunctioning or is
improperly adjusted, the drive belt is slipping, or your vehicle has
undergone long periods of standing idle or short distance driving.
These conditions result in battery plates becoming covered with a
hard coating.
•Vibration: Loose battery hold-downs may cause battery plate
failure.
•Short Circuits: These discharge a battery by draining electricity.
•Dirty or Loose Connections: Bad connections may stop the flow of
electrical power to and from the battery.
Recharging Batteries
Except for using small trickle chargers to maintain battery condition,
you should have your vehicle’s batteries charged by a qualified ser-
vice facility. To help reduce the risk of personal injuries, follow these
guidelines carefully when recharging a battery:
•Before attempting any service in the electrical installation, discon-
nect the battery negative cable.
•Allow no sparks or open flame anywhere near the charging area.
•Charge a battery only in a well-ventilated area, such as outdoors
or in a fully open garage which contains no pilot lights or other
flames.
CAUTION: Do not modify or improperly repair the vehicle’s
electrical system or power distribution box. All electrical
repairs should be performed by a qualified service techni-
cian. Improper repair or modifications will void your war-
ranty and/or cause serious damage to your vehicle.
WARNING! A battery contains gas that is explosive and
flammable. It could injure you severely. A spark or
flame near a battery on charge may cause it to explode
with great force. Follow these guidelines carefully when
recharging a battery:
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —163— 22-01510 (R12/01)
•Always make sure the battery charger is OFF before connecting or
disconnecting the cable clamps.
•Use protective eyewear.
\
•Maintain the full level of electrolyte in the batteries. This reduces the
volume of gas in the cells. The electrolyte level should always be
between 0.4–0.6 in. (10–15mm) above plates. Fill with distilled
water only. After distilled water has been added, wait at least a half
hour to measure solution density (specific gravity). The specific gravity
should be between 1.258–1.265 or the electrolyte level within “MIN”
and “MAX” marks.
•Before attempting any work on the batteries or electrical system,
remove all jewelry. If metal jewelry or other metal comes in contact
with electrical circuits, a short circuit may occur causing you to be
injured—plus electrical system failure and damage.
•To avoid short circuits and damage to yourself or the vehicle, never
place metal tools or jumper cables on the battery or nearby. Metal that
accidentally comes in contact with the positive battery terminal or any
other metal on the vehicle (that is in contact with the positive terminal),
could cause a short circuit or an explosion.
•Keep all batteries away from children
.
•Never reverse battery poles.
•Battery terminals should not be coated with improper grease. Use
petroleum jelly or commercially available, noncorrosive, noncon-
ducting terminal coatings.
•Keep the battery clean and dry.
WARNING! Always make sure the battery charger is OFF
before connecting or disconnecting the cable clamps. Do
not connect or disconnect charger cables while the
charger is operating to reduce the danger of explosions.
WARNING! Always shield your eyes and avoid leaning over
the battery whenever possible.
CAUTION: Never use a metallic funnel to add distilled
water. It could come in contact with a terminal, creating a
short circuit, resulting in severe injury or damage to your
vehicle.
WARNING! Charger cables must be connected positive to
positive (+ to +) and negative to negative (– to –). Reversing
polarity can damage the electrical system.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —164— 22-01510 (R12/01)
•Look for any signs of damage.
•Battery acid that may spill during charging should be washed off
with a solution of warm water and baking soda to neutralize the
acid. If you accidentally get acid in your eyes or on your skin, imme-
diately rinse with cold water for several minutes and call a doctor.
•Do not charge a frozen battery; allow it to thaw out first. And
always allow the battery to thaw gradually—do not apply direct
heat. Gas trapped in the ice may cause an explosion.
•Never attempt to place the vehicle in motion, or run the engine with
batteries disconnected.
•When fast charging, remove the battery caps so pressure doesn’t
accumulate.
•Never use a fast charger as a booster to start the engine. This can
seriously damage sensitive electronic components such as relays,
radio, etc., as well as the battery charger. Fast charging a battery
is dangerous and should only be attempted by a competent
mechanic with the proper equipment.
Slow Battery Charging
1. Make sure the electrolyte level in each cell is between the “MIN”
and “MAX” marks. If the fluid level is below the “MIN” mark, correct
the condition.
2. Disconnect the battery cables.
3. Connect charger cables.
4. Start charging the battery at a rate not over 6 amperes. Normally,
a battery should be charged at no more than 10 percent of its
rated capacity.
5. After charging, turn OFF charger and disconnect charger cables.
Jump Starting Batteries
If your battery is discharged (dead), you may be able to start it by
using energy from a good battery in another vehicle. This is termed
“jump starting.” Because of the various battery installations in optional
electrical systems, Peterbilt does not recommend that you attempt to
jump start your vehicle. If you have a battery problem, contact a
Peterbilt Dealer or a reputable towing service. But if you are unable to
do this, and must jump-start your vehicle, then ensure that you follow
the precautions and instructions below.
NOTE: Follow the instructions that come with your battery
charger. It is not necessary to remove the battery from the
compartment.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —165— 22-01510 (R12/01)
WARNING! Batteries contain acid that can burn and
gasses that can explode. Ignoring safety procedures
can cause you or others to be badly hurt.
•
Never jump start a battery near fire, flames, or electrical
sparks. Batteries generate explosive gases. Keep
sparks, flame, and lighted cigarettes away from batteries
•
Do not allow battery fluid to contact eyes, skin, fabrics,
or painted surfaces. Always wear eye protection. Bat-
tery acid that may spill during charging should be
washed off with a solution of warm water and baking
soda to neutralize the acid. If you accidentally get acid
in your eyes or on your skin, immediately rinse with
cold water for several minutes and call a doctor.
•
Be careful that metal tools or any metal in contact with
the positive terminal do not contact the positive bat-
tery terminal and any other metal on the vehicle at the
same time. Remove metal jewelry; avoid leaning over a
battery. If metal jewelry or other metal comes in con-
tact with electrical circuits, a short circuit may occur
causing you to be injured—plus electrical system fail-
ure and damage to the vehicle.
•
Do not try to jump start or charge a frozen battery.
(Even a battery with ice particles on the electrolyte
surface is dangerous.) Allow it to thaw out first. And
always allow battery to thaw gradually—do not apply
direct heat. Gas trapped in the ice may cause an explo-
sion.
•
Do not try to jump start a vehicle if the electrolyte level
in the battery of either vehicle is low. Maintain the full
level of electrolyte in the batteries. This reduces the
volume of gas in the cells.
•
The voltage of the booster battery must have a 12–volt
rating. And the capacity of the booster battery should
not be lower than that of the discharged battery. Use of
batteries of different voltage or substantially different
capacity rating may cause an explosion. To avoid seri-
ous personal injury and damage to the vehicle, heed
all warnings and instructions of the jumper cable man-
ufacturer. The jumper cables must be long enough so
that the vehicles do not touch.
•
Applying a higher voltage booster battery will cause
expensive damage to sensitive electronic compo-
nents, such as relays, and the radio. Improper hook–
up of jumper cables or not following these procedures
can damage the alternator or cause serious damage to
both vehicles or yourself.
•
Battery posts, terminals, and related accessories con-
tain lead and lead compounds, chemicals known to
the State of California to cause cancer and reproduc-
tive harm. Wash hands after handling.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —166— 22-01510 (R12/01)
To Jump Start Your Vehicle:
1. Wear eye protection and remove rings, metal watch bands, and
any other metal jewelry.
2. Set the parking brakes. Place the transmissions of both vehicles in
Neutral. Do not let the vehicles touch one another. Turn the ignition
key to Off in the vehicle with the discharged battery. Also turn off
lights, heater, and any other unnecessary electrical load.
3. If either battery has vent caps, remove them and check the fluid
level. If it is OK, replace the caps before going further. If the level is
low, add distilled water, and replace the caps before proceeding. If
no water is available, remove the caps and cover the filler open-
ings with a cloth before proceeding. After jump starting the vehicle,
dispose of the cloth.
4. Attach one end of a jumper cable to the dead battery’s positive ter-
minal. This will have a large red “+” or “P” on the battery case,
post, or clamp. Attach the other end of the same cable to the posi-
tive terminal of the good battery.
5. Attach the remaining jumper cable FIRST to the negative battery
terminal (black “-” or “N”) of the good battery, and then to the chas-
sis or ground of the vehicle being jump started.
6. Start the engine in the vehicle with the good battery. Let it run a
few minutes. Then start the engine in the vehicle with the dead
battery. If the engine fails to start, do not continue to crank the starter
but contact the nearest Authorized Service Center.
7. Reverse the above sequence exactly when removing the jumper
cables. Take care that your first step is to remove the cable from
the chassis or ground of the vehicle that was jump-started.
CAUTION: Departures from these procedures could also
cause serious damage to both vehicles. Improper use of a
booster battery to start a vehicle may cause an explosion.
WARNING! If you do not cover the filler openings on the
battery, electrolyte could boil out of the openings and
hurt someone or damage the vehicle. Replace caps
securely if there is enough fluid in the battery, or cover
with a cloth if no water is available and your fluid is low.
WARNING! When disconnecting jumper cables, make sure
they do not get caught in any moving parts in the engine
compartment.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —167— 22-01510 (R12/01)
Removing and Installing Batteries
Whenever you have to install a battery or remove one, follow these
guidelines for the safety of yourself and the battery.
•Ensure all switches on the vehicle are turned Off.
•Disconnect the ground cable first when removing a battery.
•Connect the ground cable last when installing a battery.
Fuel System
Location of Fuel Shut-off Valves: Fuel shut-off valves for the fuel
crossover line are on the bottom of the secondary fuel tank, at the
crossover line connection. They are optional on the primary fuel tank.
Specification: Use only diesel fuel as recommended by engine manu-
facturers.
Fuel Filters
Please follow these recommendations when you are changing your
fuel filters or strainer elements. Your engine will run better and last
longer if you do. See the engine manufacturer’s recommendations for
proper water and micron requirements.
1. When removing filters, cover any electrical equipment and wiring
that might get soaked with fuel. Diesel fuel may permanently dam-
age electrical insulation.
2. When installing spin-on (throwaway) filters, hand tighten them only
to 1/2 to 2/3 turn after gasket contact. Mechanical tightening of
these filters may distort or crack the filter head.
CAUTION: Always reinstall the battery compartment cover
(step) before entering the cab. Without the battery cover
you could slip and fall, resulting in possible injury to your-
self.
WARNING! A mixture of gasoline or alcohol with diesel
fuel in the presence of an ignition source (such as a cig-
arette) could cause an explosion. You could be seri-
ously injured. Use only the recommended diesel fuel.
CAUTION: If anyone ever pours gasoline into your fuel
tank, drain the entire system. Otherwise, the pump and
engine will be damaged. Don’t try to dilute the gasoline
by adding diesel fuel (See Warning above).
NOTE: To expel air from density-type strainer elements,
soak them in clean fuel before installing them.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —168— 22-01510 (R12/01)
3. When replacing a fuel filter element, don’t use a substitute. Install
only filter elements designed for fuel filtration. First clean and
inspect the shell. Then insert the new element and fill the con-
tainer at least 2/3 full of clean fuel before installing the shell.
4. Throw away old gaskets. Replace them with new ones to ensure a
positive seal.
5. Position the shell and gasket properly. Then tighten the cover nut
or bolt just enough to prevent fuel leakage.
6. After starting the engine, check for leaks around the filter.
Steering
Check:
•Tierod for straightness
•Draglink clamp for looseness or interference
•Ball joints and steering U-joints for looseness
•Steering wheel for excessive freeplay. Check the simplest proba-
ble causes first:
-Unequal tire pressures
-Loose cap nuts
-Bent tierod
-Loose wheel bearing
If these checks do not reveal the problem, or if you correct them and
still have a steering problem, take your truck to an authorized dealer
for evaluation.
Front End Alignment
For driving safety and comfort, and to prolong the life of your vehicle,
it is important to have proper front end alignment. Check tire wear
frequently. Uneven tire wear is a sign that your front end or rear axles
may be misaligned.
If you see uneven wear, take your vehicle to a service center familiar
with aligning front ends on Peterbilt vehicles.
WARNING! A steering system that is not working prop-
erly can cause an accident. You could lose control of
your vehicle if the steering is not in good order. For
driving safety, give your steering gear and components
the following visual checks frequently. Check them
especially after trips over rough roads.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —169— 22-01510 (R12/01)
Rear Axle Alignment
Continual road shock and load stresses may force your rear axles out
of alignment. If you detect rapid tire wear on the rear axles, you may
have misaligned axles. If you suspect you do, have your rear axle
alignment checked and adjusted by an authorized dealership.
U-Bolt Tension for Front and Rear Axles
It is important that U-bolts remain tight. Off-highway use of your vehi-
cle will cause them to loosen faster. But all vehicles need to have
their U-bolts checked and tightened regularly. Be sure someone with
the proper training and the right tools checks and tightens the U-bolts
on your Peterbilt. The proper torque requirements are specified in the
Peterbilt Maintenance Manual for your vehicle.
Frame Fastener Torque Specifications
WARNING! U-bolts that are too loose can cause an
injury accident. Loose U-bolts can cause uneven tire
wear, poor alignment, and loss of control of your vehi-
cle. You probably can’t tighten U-bolts correctly your-
self. But be sure to have them checked and tightened
regularly by an authorized mechanic.
•
For on-highway vehicles, tighten the U-bolts after the
first 15,000 miles (24,000 km). Then tighten them every
60,000 miles (96,000 km) after that.
•
For off-highway vehicles, tighten the U-bolts after the
first day or two of operation. Then tighten them every
15,000 miles (24,000 km) after that.
WARNING! Failure to maintain the specified torque values
or to replace worn parts can cause component system fail-
ure, possibly resulting in an injury accident. Improperly
tightened (loose) suspension U–bolts can lead to unsafe
vehicle conditions, including: hard steering, axle misalign-
ment, spring breakage or abnormal tire wear.
Fastener
Type Fastener
Size
Torque
Lb. ft. N.m.
Bolt / Locknut /
Hardened Washer
1/2 Inch 86 - 108 117 - 147
5/8 Inch 130 - 163 176 - 221
M12 65 - 85 89 -115
M16 155 -195 210 - 264
M20 495 - 605 668 - 818
CAUTION: When installing bolts on the frame, use only
metric grade 10.9 bolts of the proper length.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —170— 22-01510 (R12/01)
Standard Capscrew Torque Specifications
The torque values in the previous tables are based on the use of
clean and dry threads.
For standard capscrews:
1. Always use the torque values listed the capscrew table.
2. Reduce torque by 10% when engine oil is used as a lubricant.
3. Reduce torque by 20% if new plated capscrews are used.
Frame Fasteners
1. Go around your vehicle as per the Preventive Maintenance Sched-
ule and tighten all frame fasteners with a torque wrench.
2. Always use the torque values listed in frame fastener table.
3. Always torque fasteners from the nut end.
SAE Grade
Number 58
Capscrew Body
Size
(inches-thread)
Torque Torque
Lb. ft. N.m. Lb. ft. N.m.
1/4-20 6 - 9 8 - 12 9 - 12 12 - 16
-28 7 - 10 9.5 - 14 10 - 14 14 - 19
5/16-18 13 - 18 18 - 24 18 - 25 24 - 34
-24 14 - 20 19 - 27 20 - 28 27 - 38
3/8-16 22 - 32 30 - 43 31 - 44 42 - 60
-24 25 - 40 34 - 54 35 - 50 47 - 68
7/16-14 35 - 50 47 - 68 50 - 71 68 - 96
-20 39 - 56 53 - 76 56 - 80 76 - 108
1/2-13 54 - 77 73 - 104 76 - 109 103 - 149
-20 58 - 87 79 - 118 86 - 123 117 - 167
9/16-12 78 - 111 105 - 151 110 - 158 149 - 214
-18 87 - 124 118 - 168 123 - 176 167 - 239
5/8-11 108 - 154 147 - 209 153 - 218 208 - 296
-18 122 - 174 166 - 236 173 - 247 235 - 335
3/4-10 192 - 273 260 - 370 271 - 386 367 - 523
-16 214 - 305 290 - 414 303 - 431 411 - 583
7/8-9 309 - 441 419 - 598 437 - 624 593 - 846
-14 341 - 486 462 - 659 482 - 589 654 - 799
1 -8 464 - 662 629 - 898 656 - 935 889 - 1268
1-12 508 - 724 689 - 982 718 - 1023 973 - 1386
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —171— 22-01510 (R12/01)
Engine Accessories
Accessory Drive Belts
You can extend the reliability and service life of your vehicle’s drive
belts with proper attention to installation, adjustment, and mainte-
nance. Neglect could cause belt failure. The result could be the loss
of the electrical or air system as well as possible engine damage from
overheating. So it’s a very good idea to check your belts frequently
and replace them as soon as you detect trouble.
Follow the procedure below to install an accessory drive belt:
1. Loosen the pulley bracket(s) and shorten the distance between the
pulley centers. Install the new belt without forcing it. Do not roll or
pry the belt over the pulley.
Pulley Brackets
2. Check the pulley alignment and adjustment if necessary. Pulley
misalignment must not be more than 1/16 in. for each 12 inches of
belt free span (1.5 mm for each 300 mm of belt free span). Belt
free span is measured between pulley centers.
3. Check the riding depth. Belt riding depth should not vary more
than 1/16 in. (1.5 mm) on match belt sets.
4. Check that the belt does not ride on the bottom of the pulley
groove, and that the outside edge of the belt does not stick out
more than 1/16 in. (1.5 mm) beyond the outside edge of the pulley.
Belt Tension
Alternator drive belts (all widths), new or used, should be adjusted to
105-125 pounds (467-566 N.) of tension.
NOTE: Engines equipped with poly-vee belts are equipped
with tensioners and therefore require no belt adjustments.
02952
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —172— 22-01510 (R12/01)
The best method of testing belt tension is to apply a good quality
commercial gauge. If a tension gauge is not available, use this
method of testing:
•Apply 25 pounds (111 N.) of force midway between the pulleys.
•Deflection should be one belt thickness for each foot of distance
between the pulley centers.
Tension Test
Retensioning New Belts
A belt is considered “used” after 30 minutes of operation.
New belts will loosen after running for an hour or more. Check for
proper tension after the first period of operation. If the belt can be
deflected 1/8 in. (3 mm) more than specified above, tighten according
to the section above on belt tension. Do not tighten belts beyond
specified limits. Damage to bearings and the belts may occur.
Fan Clutch / Fan
To Check Your Fan:
1. Check the fan assembly mounting bolts for tightness. Inspect the
blades for damage.
2. Check the clutch operation by starting the engine when it is cold.
Then idle it at about 800 RPM. Listen for air leaks. Check that the
fan is not working while the engine is warming. When the clutch
engages, note the reading on the vehicle’s panel-mounted coolant
temperature gauge. If the fan clutch engages at low engine tem-
perature or cycles on and off more frequently than it should
(receives “false signals”), have the problem corrected at your deal-
ership.
WARNING! Thermatic fans engage suddenly without
warning and can hurt you badly. Stay away from the fan
when the engine is running.
02953
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —173— 22-01510 (R12/01)
Air Intake System
Engine heat, vibration, and age combine to loosen air intake connec-
tions and cause cracks in the tubing and elbows. Leaks in the intake
system allow abrasive dust to enter the engine and quickly cause
expensive damage. During your daily walk-around inspection, care-
fully check all tubing, elbows, clamps, supports, and fasteners for
condition and tightness.
Under normal operating conditions, we recommend complete disas-
sembly and cleaning of the air intake system annually.
Under severe operating conditions, such as heavy off-highway use,
the disassembly and cleaning should be more frequent. Replace any
defective parts. With the possible exception of mounting brackets,
don’t repair defective parts.
Air Cleaners
The following service information is basic to all air cleaner makes and
models.
Service the air cleaner filter elements as specified in the Preventive
Maintenance Schedule. If your vehicle is equipped with an optional
air inlet restriction indicator, service the filter elements when the air
inlet restriction indicator locks in the extreme Up position. Paper ele-
ments require care and proper handling because they are critical to
engine service life.
Turbocharger
When servicing the air intake and exhaust systems on a turbocharged
engine, check the following. If you detect any deficiencies, take the
vehicle to an authorized dealer for servicing. Delay could lead to
severe and expensive damage to your vehicle.
•Lubricating System. Check the oil lines, housing, and connec-
tions. Look for leaks, damage, or deterioration. Leaks could mean
you have damaged oil lines or oil seals.
•Manifold. With the engine operating, check for leaking manifold or
flange gaskets.
•High Frequency Vibration. Vibration may indicate turbo rotor
imbalance. Have your dealer investigate this immediately.
WARNING! Do not operate engine with turbocharger
intake piping disconnected. Working around a turbo-
charger with the intake piping removed can be danger-
ous. A suction is created when the engine is running.
This suction could draw your hand or anything else near
it into the impeller fan. You cold be seriously injured.
Always keep the intake piping connected when you will
be running the engine.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —174— 22-01510 (R12/01)
Exhaust System
Details of inspection and maintenance of your exhaust system are
covered below, under Noise Control System. Check the Index for
page reference.
Anti-lock Braking System (ABS)
For details of use and maintenance of your anti-lock system, see the
anti-lock braking system service literature that came with your truck.
Below are some general notes on repairing your anti-lock braking
system:
•The foundation brake system must be in proper working order to
ensure the best ABS performance.
•Before welding anywhere on the vehicle, detach the ABS ECU
connector and all other electronic control units.
•Never detach the ECU connector with the ignition turned on.
•Do not attempt to repair ABS/ASR/ATC electrical cables that are
outside the vehicle. Replace faulty cables as an assembly.
•When servicing brakes, hubs, or axle, recoat the ABS sensors with
anti-seize compound. Make sure the sensor is pushed against the
pulse wheel after the hub is reinstalled. On rear axles, the sensor
should be pushed fully into the mounting block before reinstalling
the hub.
•Check ABS wiring harnesses and piping periodically for chafing or
other problems. No regular maintenance is required on the ABS
components.
•During wheel balancing, dyno testing, or any time the ignition is on
with part of the ABS disconnected, a failure code will be recorded.
After servicing or testing of the vehicle is completed, clear the fail-
ure codes.
If, due to operating conditions, a brake application causes either
wheel on the same axle to begin skidding, wheel speed sensors
immediately signal the anti-lock controller in the modulator assembly.
The controller responds instantly by signaling the solenoids in the
modulator which activate the air valves, reducing application pressure
as needed to prevent the wheels from locking up. If this over-riding
correction is effective, application pressure is allowed to build up to
the original input.
Any malfunction of the anti-lock system on one or more axles will
cause the system to fail-safe, and the panel-mounted amber warning
light will come on, indicating both a malfunction, and automatic shut-
down of the system. If the air system is intact (indicated by the pres-
sure gauges), the service brakes will continue to function normally,
but without benefit of the anti-lock feature.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —175— 22-01510 (R12/01)
Cab Heater-Air Conditioner
The combination heater-air conditioner provides comfort for those in
the cab through accurate control of the cab environment in all weather
conditions. Regular attention will help you keep your unit running well.
Perform the following checks every 3 months or 30,000 miles / 48,000
km, whichever occurs first:
Heater
•Check all heater controls for full-range operation.
WARNING! Although the brakes will continue to operate
with a malfunction in either circuit, the vehicle should not
be operated until the system is repaired, and both braking
circuits, including all pneumatic and mechanical compo-
nents, are working properly.
CAUTION: Do not attempt to recycle the anti-lock system
until the vehicle has been brought to a full stop.
NOTE: If one wheel on any driven axle continues to slip or spin
for approximately 4 seconds, this will cause the anti-lock con-
troller for that axle to go into the fail-safe mode, and the warning
light will give a shutdown signal. In this case, the anti-lock sys-
tem can be turned back on, and the warning light extinguished,
by turning the key switch OFF and ON, after the vehicle has
been brought to a full stop. When the key switch is turned back
on, the warning light will illuminate and remain on for 3 to 5 sec-
onds. This is a built-in function test of the warning light.
NOTE: Keep the engine exhaust system and the vehicle’s cab/
sleeper ventilation system properly maintained. It is recom-
mended that the vehicle’s exhaust system and cab/sleeper be
inspected
•By a competent technician every 15,000 miles
•Whenever a change is noticed in the sound of the
exhaust system
•Whenever the exhaust system, underbody, cab or sleeper
is damaged
NOTE: To allow for proper operation of the vehicle ventilation
system
•
keep the inlet grille at the base of the windshield clear of
snow, ice, leaves and other obstructions at all times.
•
keep the exhaust pipe area clear to help reduce the
buildup of exhaust gases under the vehicle.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —176— 22-01510 (R12/01)
•Check hoses, connections, and heater core for condition and
leaks.
•Check the drain pan of the fresh air vent for trapped water before
assuming that there is a leak in the heating system.
•If the heater core is leaking, take the vehicle to a Peterbilt dealer
for proper heater service or repair.
•Check the heater core for debris blocking the air flow. If the
blower is functioning properly, yet the heater is not operating prop-
erly, the heater core may be clogged. Clean the heater core if nec-
essary. If the condition persists, take the vehicle to a Peterbilt
dealer for proper heater service or repair.
Air Conditioner
•Check the compressor belt for condition and proper tension.
Adjust 105 - 125 pounds.
•Check the compressor and drive clutch for noise and vibration. If
you find problems, have the system checked thoroughly. A mal-
functioning clutch usually indicates trouble elsewhere in the sys-
tem.
•Check the evaporator core and condenser core for debris restrict-
ing air flow. Clean if necessary. Small particles may be removed
with compressed air blown through the core in the opposite direc-
tion of normal air flow.
•Check all hoses for kinks, deterioration, chafing, and leaks. Adjust
kinked or chafing hoses to eliminate restrictions and prevent fur-
ther wear.
•On tilt-cab vehicles, verify that hoses are routed around the pivot
point so that lifting the cab does not strain them.
WARNING! The air conditioning system is under pres-
sure. If not handled properly, it could explode, causing
injury to you and your vehicle. Any servicing that
requires depressurizing and recharging the air condi-
tioning system must be conducted by a qualified techni-
cian with the right facilities to do the job.
NOTE: Engines equipped with poly-vee belts are equipped
with tensioners. No belt adjustments can be made. Replace
a poly-vee belt when the indicator on the tensioner is no
longer within the recommended (green) range.
CAUTION: Small particles blown by compressed air
could injure your eyes. Wear eye protection any time
you blow compressed air.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —177— 22-01510 (R12/01)
•Check all components and connections for refrigerant leaks. If you
discover a leak, don’t try to tighten a connection. Tightening a
connection may cause a worse leak. Have a qualified technician
correct the problem.
•Have the air conditioning system fully inspected annually by your
dealer.
Special Precautions
Appearance
Painted Surfaces
•Wash frequently to remove grime and caustic deposits that may
stain the finish. Apply cool or lukewarm water. You may want to
use a mild soap.
•Avoid washing your vehicle in bright sunlight.
NOTE: A leaking evaporator or condenser core cannot be
repaired; it must be replaced.
WARNING! Excessive heat may cause your air condi-
tioning system to explode. Never weld, solder, steam
clean, or use a blow torch near any part of the air condi-
tioning system. If a refrigerant leak develops in the pres-
ence of excessive heat or an open flame, hazardous
gases may be generated. These gases may cause
unconsciousness or death. If the system is leaking
refrigerant:
•
Stay away from the hot engine until the exhaust mani-
fold has cooled.
•
Don’t permit any open flame in the area. Even a match
or a cigarette lighter may generate a hazardous quan-
tity of phosgene gas.
•
Don’t smoke in the area. Inhaling gaseous refrigerant
through a cigarette may cause violent illness.
CAUTION: Do not aim the water jet directly at door locks or
hatch. Tape the key holes to prevent water from seeping
into the lock cylinders. Water in lock cylinders should be
removed with compressed air. To prevent locks from freez-
ing in the winter, squirt glycerin or lock deicer into the lock
cylinders.
WARNING! Handle cleaning agents carefully. Cleaning
agents may be poisonous. Keep them out of the reach of
children.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —178— 22-01510 (R12/01)
•Road tar may be removed with a special commercial tar remover
or mineral spirits.
•Waxing offers added protection against staining and oxidation.
But to allow enough time for your truck’s finish to cure, wait about
ninety days after the date of manufacture before waxing. Don’t
wax in the hot sun. Don’t friction burn the paint with a buffing
machine.
Aluminum and Chrome Surfaces
•Clean aluminum wheels and bumpers with warm water.
•Tar remover will get rid of heavy deposits of road grime.
•To prevent spotting, wipe aluminum surfaces dry after washing.
•Under corrosive conditions, such as driving on salted roads, clean
aluminum parts with steam or high pressure water from a hose. A
mild soap solution will help. Rinse thoroughly.
•Chrome surfaces are best cleaned with fresh water. Wipe dry to
preserve their luster. A commercial chrome cleaner will remove
light rust. After cleaning, wax flat surfaces and apply a thin coat of
rust preventive lubricant around bolts or other fasteners.
Stainless Steel
To clean and restore the finish of stainless steel components:
1. In a plastic pail mix 4 tsp of alum (a powder found in grocery stores
or drugstores), with 32 oz. of water (warm water will dissolve alum
faster, but cool will work).
2. Apply the alum/water solution with a pad of steel wool (0000 grade
or finer). GENTLY wipe the component lengthwise; no pressure is
necessary.
3. It is the chemical reaction between the carbon steel of the wool
and the alum solution which cleans the stainless, not the scrub-
bing of abrasive action of application.
4. You may also use any stainless cleaner recommended for cleaning
boat parts.
Interior
•Wipe vinyl upholstery and lining with a good commercial uphol-
stery cleaner. Do not use acetone or lacquer thinner.
•Clean fabric upholstery with upholstery shampoo specially formu-
lated for this purpose. Follow instructions on the container.
Weatherstripping
Occasionally spray weatherstripping on doors and windows with sili-
cone compound to help preserve resiliency. This is especially useful
in freezing weather to prevent doors and windows from sticking shut
with ice.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —179— 22-01510 (R12/01)
Chassis
Hose dirt and grime from the entire chassis. Then if an oil leak devel-
ops, you will be able to detect it easier.
Noise Control System
Noise Emission Warranty
Peterbilt Motors Company warrants to the first person who purchases
this vehicle for purposes other than resale and to each subsequent
purchaser that this vehicle, as manufactured by Peterbilt Motors Com-
pany, was designed, built and equipped to conform at the time it left
Peterbilt’s control with all applicable U.S. EPA Noise Control Regula-
tions.
This warranty covers this vehicle as designed, built and equipped by
Peterbilt, and is not limited to any particular part, component or sys-
tem of the vehicle manufactured by Peterbilt. Defects in design,
assembly or in any part, component or system of the vehicle as man-
ufactured by Peterbilt, which at the time it left Peterbilt’s control
caused noise emissions to exceed Federal standards, are covered by
this warranty for the life of the vehicle.
Tampering with Noise Control System Prohibited
Federal law prohibits the following acts or the causing thereof:
(1) The removal or rendering inoperative by any person other than for
maintenance, repair, or replacement, of any device or element of
design incorporated into any new vehicle for the purpose of noise
control prior to its sale or delivery to the ultimate purchaser or while it
is in use, or (2) the operation of the vehicle after such device or ele-
ment of design has been removed or rendered inoperative by any per-
son.
Among those acts presumed to constitute tampering are
Noise Insulating Blankets
•Removing noise insulators from engine block or from around the
oil pan.
•Cutting holes in, or cutting away part of, noise insulators.
•Removing hood-mounted noise insulation.
Engine Electronic Control Unit (ECU)
•Modifying ECU parameters.
Engine Cooling System
•Removing or rendering inoperative the fan clutch.
•Removing the fan shroud.
Air Intake System
•Removing or rendering inoperative the air cleaner / silencers or
intake piping.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —180— 22-01510 (R12/01)
Exhaust System
•Removing or rendering inoperative the exhaust system compo-
nents.
•Inner Fender Shields and Cab Skirts
•Removing shields or skirts.
•Cutting away parts of shields, skirts or damaged or loose portions
of shields or skirts.
Fuel System
•Removing or rendering engine speed governor inoperative, allow-
ing engine speed to exceed manufacturer’s specifications.
•Removing air signal attenuator on engines equipped with this
device.
Inspection & Maintenance Instructions for Noise Control
System
The following instructions are based on regular inspection of the
noise control system. If, during regular inspection or maintenance of
other systems or components, you find something wrong with parts of
the noise control system, inspect those parts more frequently to be
sure they are performing up to specification.
At the end of this section you will find the Maintenance Log. This is a
schedule of inspection and maintenance intervals for each compo-
nent.
Exhaust System
•Manifold
Check for exhaust leaks and condition of gaskets. Replace any
blown gaskets. Use a torque wrench to check all cap-screws,
including those at the flanges. Refer to the engine manufacturer’s
service manual for proper tightening sequence and torque values.
•Joints and Clamps
Check for leaks, and tighten as necessary. Check for deterioration
or dents in pipes and clamps which could allow exhaust to escape.
On tilt-cab units, check exhaust balljoint for condition and proper fit.
•Piping
Check for rust, corrosion, and damage. If piping is perforated at any
point, temporary patching or lagging is acceptable until you can have
permanent repairs made. On turbocharged engines check joints at
the flanges and mounting brackets for tightness.
•Mufflers
Check clamps and mounting brackets for security. Check internal baf-
fling for security. You can do this by listening for rattling sounds while
tapping the muffler with a rubber mallet or revving the engine up and
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —181— 22-01510 (R12/01)
down through its normal operating range. Check muffler for rust and
corrosion.
•Exhaust Tail Pipe(s)
Check the mounting security. Tighten as necessary. The miter cut at
the tip of the pipe must be facing the rear of the truck. Do not modify
the end of the pipe in any way.
Fan Shroud
Check all fasteners for tightness. Check for stress cracks in the
shroud. Make sure the shroud is adjusted so that it does not touch
the fan blades.
Hood Insulation Blanket
Fasteners: Check all fasteners for condition and security. Repair or
replace any broken or defective fasteners.
Blanket: Check for chafing, tears, etc. Patch it if necessary. Find the
cause of the damage. If any component or accessory is causing wear
or damage and can’t be relocated, put reinforcing pads on the blanket
at the site of wear.
Engine Mounted Noise Insulators
Fasteners: Check for condition and security. How you do this will
depend on the method of attaching the noise insulators on the engine
and around the oil pan (bolts, snap fasteners, or straps). Tighten
loose fasteners; repair or replace any worn or damaged fasteners.
Insulators: Check insulators around fasteners and stress points,
especially where they may be affected by engine vibration. Repair
any cracked or damaged mounting points. Use suitable reinforcing
plates to ensure that the insulators will remain in position.
Inner Fender Shields and Cab Skirts
Fasteners: Check all fasteners for security, especially the self-tapping
hex head screws. Remove and replace any loose rivets.
Shields and Skirts: Check shields and skirts for cracks at mounting
and stress points. Check fender shields for tire marks, worn spots, or
damage from objects thrown from tire treads. You can repair cracked
or damaged fiberglass fender shields with fiberglass and resin.
If you find damage at a fastening point, you can gain additional
strength by installing a suitable reinforcing plate. This plate should be
drilled to accept a rivet and laminated to the shield with fiberglass and
resin.
WARNING! The engine fan can engage at any time without
warning. Anyone near the fan when it turns on could be
badly injured. Before turning on the ignition, be sure that
no one is near the fan. Do not work on the fan with the
engine running.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —182— 22-01510 (R12/01)
Check cab skirts, sills, and brackets for overall condition and repair
them as necessary. Damaged rubber fender shields or cab skirting
cannot be repaired. You will need to replace it.
Your authorized dealership can perform all of these checks and
repairs or replacements.
Air Intake System
Do all checks and maintenance chores listed in this manual under
Engine Air Intake System and Air Cleaner (See Index). Check the
induction tubing, elbow connections, clamps, brackets, and fasteners
for deterioration, cracks, and security. If you find an air leak any-
where between the air cleaner and the engine, repair that leak imme-
diately.
CAUTION: Air leaks cause excessive noise and may
result in serious damage to the engine. If you do not
repair them the engine damage won’t be covered by
your warranty. Repair all air leaks as soon as you find
them.
PART 8: MAINTENANCE AND SERVICE
PB1317 (CAT. NO. 5229 ) —183— 22-01510 (R12/01)
NOISE CONTROL SYSTEM MAINTENANCE LOG
COMPONENT RECOMMENDED
INTERVAL
(MILES)
DATE &
R.O. NUMBER REPAIR
FACILITY &
LOCATION
WORK PERFORMED DATE &
R.O. NUMBER REPAIR
FACILITY &
LOCATION
WORK PERFORMED
EXHAUST SYSTEM-
ROUTING
INTEGRITY 25,000
MUFFLER
INTERNAL
BAFFLES 250,000
SHUTTERS
SHROUDS 25,000
HOOD
INSULATION
BLANKET 10,000
ENGINE-MOUNTED
HOSE INSULATORS
FASTENERS 10,000
INNER
FENDER SHIELDS 50,000
CAB SKIRT
FASTENERS 50,000
AIR INTAKE
SYSTEM INTEG-
RITY
ELEMENT
5,000
CLUTCH-TYPE
FAN DRIVE 10,000
PART 9: VEHICLE IDENTIFICATION NUMBERS
PB1317 (CAT. NO. 5229 ) —184— 22-01510 (R12/01)
Each vehicle completed by Peterbilt Motors Company uses a Vehicle
Identification Number (VIN) that contains the model year designation
of your Peterbilt. The practice is in compliance with 49 CFR 565,
Code of Federal Regulations.
The Vehicle Identification Number is on the brass Peterbilt name plate
and also on the foil labels on the left hand door post. The VIN con-
tains 17 digits. The 10th digit is the code for the model year of your
vehicle. The example VIN below from a 1999 model shows how this
code works:
EXAMPLE VIN: 1XP 9D2X9 6 X D 345678
Model Year Serial Number
Plant Code
X = 1999 Y = 2000 D = Denton Factory
1 = 2001 2 = 2002 N = Nashville Factory
3 = 2003 4 = 2004
5 = 2005 6 = 2006
7 = 2007 8 = 2008
9 = 2009
0 (zero) = Glider Kit
02954
PART 10: CONSUMER INFORMATION
PB1317 (CAT. NO. 5229 ) —185— 22-01510 (R12/01)
Federal Safety Standard Certification Label
The National Highway Traffic Safety Administration regulations
require a label certifying compliance with Federal Safety Standards,
for United States and U.S. Territories, be affixed to each motor vehicle
and prescribe where such label may be located.
This certification label, which indicates the date of manufacture and
other pertinent information, is located on the left hand cab door post.
How To Order Parts
When you need replacement parts for your Peterbilt vehicles, contact
your nearest authorized Peterbilt dealer, who may be located from the
“Peterbilt Authorized U.S. and Canadian Dealers” listing (Cat. No.
5212).
When you order, it is IMPORTANT than you have the following infor-
mation ready:
•Your name and address.
•Serial number of the truck.
•The name of the part you need.
•The name and number of the component for which the part is
required.
•The quantity of parts you need.
•How you want your order shipped.
WARNING! Diesel engine exhaust and some of its con-
stituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
Other chemicals in this vehicle are also known to the
State of California to cause cancer, birth defects or
other reproductive harm.
This warning requirement is
mandated by California law (Proposition 65) and does
not result from any change in the manner in which
Peterbilt trucks are manufactured.
02955
PART 10: CONSUMER INFORMATION
PB1317 (CAT. NO. 5229 ) —186— 22-01510 (R12/01)
The National Highway Traffic Safety Administration requires that the
following information be included in the owner’s manual of motor vehi-
cles manufactured after September 1, 1990:
NHTSA Consumer Information
If you believe that your vehicle has a defect which could cause a
crash or could cause injury or death, you should immediately inform
the National Highway Traffic Safety Administration (NHTSA) in addi-
tion to notifying Peterbilt Motors Company.
If NHTSA receives similar complaints, it may open an investigation,
and if it finds that a safety defect exists in a group of vehicles, it may
order a recall and remedy campaign. However, NHTSA cannot get
involved in individual problems between you, your dealer, and Peter-
bilt Motors Company.
To contact NHTSA, you may either call the Auto Safety Hotline toll-
free at 1-800-424-9393 (366-0123 in Washington, D.C.) or write to:
Administrator, NHTSA, 400 Seventh Street, S.W., Washington, D.C.
20590. You can also get other information about auto safety from the
Hotline.
Environmental Protection
Some of the ingredients in engine oil, hydraulic oil, transmission and
axle oil, engine coolant, diesel fuel, air conditioning refrigerant (R12,
R134a, and PAG oil), batteries, etc., may contaminate the environ-
ment if spilled or not disposed of properly. Contact your local govern-
ment agency for information concerning proper disposal.
WARNING! Diesel engine exhaust and some of its con-
stituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
Other chemicals in this vehicle are also known to the
State of California to cause cancer, birth defects or
other reproductive harm.
This warning requirement is
mandated by California law (Proposition 65) and does
not result from any change in the manner in which
Peterbilt trucks are manufactured.
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —187— 22-01510 (R12/01)
A
Antifreeze 159
Anti-lock brakes 93
Appearance 177
Appliances in the Cab 58
B
Battery
compartment cover 167
electrolyte 163
recharging 163
slow battery charging 164
Brake
operation 93
Brake system
truck & tractor 93
C
Cab Tilting 10–11
Cap Nut Torque Specifications 154
Cleaning the vehicle 177
Coasting 110
Consumer Information 186
Controls
Air Horn 21
Air Suspension Deflate Switch (Dump Valve) 31
Brakesaver 36
Cigarette Lighter 46
Cruise Control Switch 33
Digital Message Center 35
Dome Light Switch 29
Electric Horn 22, 24
Engine Fan Switch 32
Fifth Wheel Lock (Slider Adjustment) Switch 39
Fog Lights Switch 29
Hand Throttle Control 27
Hazard Flasher 21
Headlights 27
Heater-Air Conditioning Controls 41
High Beam Headlights 22
ID and Clearance Lights Switch 28
Interaxle Differential Lock Switch 38
Jacobs Engine Brake or Cummins "C" Brake Switch 37
Manual Override 26
Mirror Heat Switch 34
Panel Light Knob 28
Parking Brake Valve and Trailer Air Supply Valve 40
Power Mirror Switch 34
Starter Button 26
Tilt- Telescoping Steering Column 24
Trailer Brake Hand Valve 23
Turn Signal and Indicator Lights 20
Two-Speed Rear Axle (Range) Switch 38
VARASHIELD® Wind Deflector Switch 39
Windshield Wipers and Washers 30
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —188— 22-01510 (R12/01)
Cooling system
coolant change 159
temperature 52
D
Dash
COE 18–19
Conventional 16–17
Defogging/defrosting system 45
Descending a grade 110
Door lock 177
Driver’s Checklist 76
Driving
vehicle inspection 76
E
Economical driving 110
Electrical system
batteries 162, 163
battery charging 164
jumper cables 165
Electrolyte 163
Engine
overspeed 111
temperature 52
winterfronts 83
Engine Warmup 82
Environmental Protection 186
Exhaust fumes 112
F
Federal motor vehicle safety standards 4
Federal Safety Standard Certification Label 185
G
Gauges and Displays 48
Air Application Gauge 49
Air Filter Restriction Indicator or Gauge 57
Ammeter 56
Drive Axle Temperature Gauge 55
Dual Air Pressure Gauge (Air Reservoir) 50
Engine Oil Pressure Gauge 51
Fuel Gauge 53
Manifold Pressure Gauge 56
Pyrometer 56
Speedometer / Odometer 48
Tachometer 49
Transmission Temperature Gauge 55
Trip Odometer 48
Warning Lights and Buzzers
COE 54
Conventional 53
Water Temperature Gauge 51
Glove Compartment 47
GVWR - gross vehicle weight rating 154
H
Heater and air conditioner 45
Hood Tilting 9
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —189— 22-01510 (R12/01)
J
Jumper cables 165
K
Keys 6
Keys and Locks
Ignition Switch 25
L
Lubrication
Axle 139–140
coasting 110
Steering Gear 142
Transmission 134–138
types and brands 131
Universal Joint 141
Wheel Bearing 141
Lubrication Index 132
Luggage Compartment(s) 58
M
Maintenance Schedule 112
Mirrors 57
N
Noise Control System 179
P
Parking brake
brake system, operation 91, 98
use 112
R
Restraint Systems 63
Airbag System 72
Inspection 69
Komfort-Lok® Feature 66
Shoulder Belt 64
Sleeper Bunk Restraints 67
Tether Belts 68
S
Safe vehicle operation 76
Safety precautions, maintenance 112
Safety stands 112
Seat 63
Seat adjustment 63
Servicing Specific Systems 142
Air Intake System 173
Air System 156
Anti-lock Braking System (ABS) 174
Brake Adjustment 143
Cab Heater-Air Conditioner 175
Electrical 162
Engine Accessories 171
Engine Cooling System 159
Frame Fastener Torque Specifications 169
Steering 168
Tires, Wheels, And Rims 146
Transmission And Drive Train 158
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —190— 22-01510 (R12/01)
Shifting gears 110, 111
Standard Capscrew Torque Specifications 170
Starting and Operating 80
Anti-Lock Braking System 92
Automatic And Automated Transmissions 91
Auxiliary Transmission 92
Bobtail Brake Proportioning System 96
Brake Safety and Emergency 96
Digital Message Center 95
Driving Bobtail or with an Unloaded Trailer 103
Driving With Deflated Air Springs 109
Dual Range (Two Speed) Axles 89
Idling the Engine 84
If Your Vehicle Must Be Towed 92
Interaxle Differential 87
Manually Releasing Spring Brakes 99
Operating the Clutch 85
Overheated Brakes 97
Parking Brakes and Their Use 97
Pyrometer 103
Retarders 91, 102
Setting Ride Height 106
Shifting The Transmission 85
Starting Procedure
Cold Temperature 81
Normal Temperature 80
Stopping The Engine 104
Trailer Air Supply Valve 99
T
Tachometer 111
Transmission
lubrication 134
warmup 84
U
UltraSleeper
Bunk 60
Refrigerator 59
Table 58
V
Vehicle
driving 76
Vehicle Identification Number 184
Vehicle inspections 76
Vehicle weight rating 154
W
Wheels and tires
replacement 153
Windshield washer reservoir 30
Numerics
49 CFR 565, Code of Federal Regulations 184
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —191— 22-01510 (R12/01)
NOTES
PART 11: SUBJECT INDEX
PB1317 (CAT. NO. 5229 ) —192— 22-01510 (R12/01)
NOTES
Order either of the two publications shown below through your Peterbilt dealer.
There is a charge for each. Allow four weeks for delivery.
02956
Other Publications
This manual contains both pro-
prietary and supplier service
information specifically com-
piled for the components on your
vehicle.
The material in this manual is
the same as that used by Peter-
bilt dealers. It includes inspec-
tion, maintenance, overhaul, and
troubleshooting procedures.
Custom Maintenance Manual
Owner’s Custom Parts Book
This book is a complete, unillus-
trated, computer-generated list
of the parts used to custom-
build your Peterbilt vehicle.
Please provide your Chassis
Serial Number when ordering.
Peterbilt Motors Company
P.O. Box 90208
Denton, Texas 76202

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