Peterbilt 520 Vmux Body Builder User Manual

User Manual for Peterbilt models including: 520 Vmux Body Builder

Byron Rose

Release Date 5/18/2021 - Peterbilt

2021 520 VMUX Body Builder Manual

The Peterbilt 520 Body Builder Manual can be very useful when specifying a vehicle, particularly when the body builder is involved in the ...

File Info : application/pdf, 134 Pages, 8.42MB

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PDF 520 vmux body builder manual 2021

Release Date 5/18/2021

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BODY BUILDER MANUAL CONTENTS
SECTION 1: INTRODUCTION
SECTION 2: SAFETY AND COMPLIANCE
SAFETY SIGNALS FEDERAL MOTOR VEHICLE SAFETY STANDARDS AND COMPLIANCE NOISE AND EMISSIONS REQUIREMENTS FUEL SYSTEM COMPRESSED AIR SYSTEM EXHAUST AND EXHAUST AFTER-TREATMENT SYSTEM COOLING SYSTEM AIR INTAKE SYSTEM CHARGE AIR COOLER SYSTEM
SECTION 3: DIMENSIONS
INTRODUCTION ABBREVIATIONS OVERALL DIMENSIONS FRAME RAILS FRAME HEIGHT CHARTS REAR SUSPENSION LAYOUTS
Reyco 79KB Single Reyco 102AR Single Neway ADZ252 Neway ADZ369/378 Peterbilt Air Leaf Peterbilt Air Trac Single Peterbilt Air Trac Tandem Peterbilt Air Trac Tri-Drive Peterbilt Low Air Leaf Chalmers 854 Hendrickson HMX Hendrickson RT/RTE Hendrickson HN Hendrickson R Hendrickson RS PUSHER AND TAG LAYOUTS Hendrickson Watson-Chalin EXHAUST HEIGHT CALCULATIONS GROUND CLEARANCE CALCULATIONS OVERALL CAB HEIGHT CALCULATIONS FRAME COMPONENTS
SECTION 4: BODY MOUNTING
INTRODUCTION FRAME RAILS CRITICAL CLEARANCES BODY MOUNTING USING BRACKETS
Brackets Mounting Holes Frame Drilling BODY MOUNTING USING UBOLTS Rear Body Mount
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2-1 2-2 2-3 2-4 2-4 2-5 2-6 2-6 2-6
3-1 3-1 3-1 3-10 3-12 3-19 3-20 3-21 3-22 3-23 3-24 3-25 3-26 3-27 3-28 3-29 3-30 3-31 3-32 3-33 3-34 3-35 3-35 3-39 3-43 3-44 3-45 3-46
4-1 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-9
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TABLE OF CONTENTS
SECTION 5: FRAME MODIFICATIONS
INTRODUCTION DRILLING RAILS MODIFYING FRAME LENGTH CHANGING WHEELBASE CROSSMEMBERS TORQUE REQUIREMENTS WELDING
SECTION 6: CAN COMMUNICATIONS
INTRODUCTION CAN COMMUNICATIONS ACRONYM LIBRARY SAE J1939 PARAMETER GROUP NUMBER SUSPECT PARAMETER NUMBER CAN MESSAGES AVAILABLE ON BODY CONNECTIONS
SECTION 7: ELECTRICAL
INTRODUCTION ELECTRICAL ACRONYM LIBRARY ELECTRICAL WIRING CIRCUIT CODES MULTIPLEX SYSTEM
CAN Bus System Overview CAN Bus Speeds and Circuit Designation ELECTRICAL COMPONENT OVERVIEW IN CAB CAN BASED MESSAGING CONNECTOR RP1226 Connector RP1226 Connector Locations ELECTRIC ENGAGED EQUIPMENT RP170 Connector ENGINE HARNESS 12 PIN CONNECTOR PACCAR MX Engines Cummins Engines Engine Harness Connection Location ENGINE HARNESS 8 PIN CONNECTOR POWER DISTRIBUTION CENTER CHASSIS MODULE CHASSIS MODULE FUNCTION DESIGNATIONS FUSE GROUPS ELECTRIC OVER AIR SOLENOIDS SWITCHES SPARE POWER TRANSMISSION BACKUP SIGNALS LIFT AXLES (PUSHER & TAG) DIGITAL DISPLAY TELLTALE ICONS Body Builder Telltale Locations
SECTION 8: POWER TAKE-OFF (PTO)
INTRODUCTION TRANSMISSION MOUTED PTO GENERAL
Manual Transmission Automatic Transmission Installation Clearances FRONT ENGINE PTO
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5-1 5-1 5-1 5-1 5-3 5-4 5-4
6-1 6-1 6-2 6-2 6-2 6-3
7-1 7-1 7-2 7-3 7-3 7-3 7-4 7-5 7-5 7-6 7-7 7-7 7-12 7-12 7-14 7-15 7-17 7-18 7-20 7-21 7-22 7-24 7-27 7-28 7-29 7-30 7-31 7-31 7-32
8-1 8-1 8-1 8-2 8-2 8-3
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TABLE OF CONTENTS
REAR ENGINE PTO INSTALLTION OF PTO MODEL
Chelsea 890 MX PTO MODE CONTROL (PMC) MX PTO MODE ACTIVATION MX PTO MODE CONTROL LOCATION MX PTO MODE FEATURES MX PTO MODE PROTECTIONS AND LIMITS MX PTO SPEED CONTROL (PSC) FEATURES MX PTO SPEED CONTROL INTERLOCKS PTO SPEED CONTROL ICONS REMOTE PMC CONNECTIONS PTO MODE CONTROL FLOW CHARTS MX PTO TROUBLESHOOTING GUIDE

8-4 8-5 8-5 8-6 8-6 8-6 8-7 8-7 8-8 8-9 8-9 8-10 8-11 8-12

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SECTION 1 INTRODUCTION

The Peterbilt 520 Body Builder Manual was designed to provide body builders with a comprehensive information set to guide the body planning and installation process. Use this information when installing bodies or other associated equipment.
This manual contains appropriate dimensional information, guidelines for mounting bodies, modifying frames, electrical wiring information, and other information useful in the body installation process.
The Peterbilt 520 Body Builder Manual can be very useful when specifying a vehicle, particularly when the body builder is involved in the vehicle definition and ordering process. Information in this manual will help reduce overall costs through optimized integration of the body installation with vehicle selection. Early in the process, professional body builders can often contribute valuable information that reduces the ultimate cost of the body installation.
In the interest of continuing product development, Peterbilt reserves the right to change specifications or products at any time without prior notice. It is the responsibility of the user to ensure that he is working with the latest released information. Check Peterbilt.com for the latest released version.
If you require additional information or reference materials, please contact your local Peterbilt dealer.

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SECTION 2 SAFETY AND COMPLIANCE
SAFETY SIGNALS
There are a number of alerting messages in this book. Please read and follow them. They are there for your protection and information. These alerting messages can help you avoid injury to yourself or others and help prevent costly damage to the vehicle.
Key symbols and "signal words" are used to indicate what kind of message is going to follow. Pay special attention to comments prefaced by "WARNING", "CAUTION", and "NOTE." Please don't ignore any of these alerts.
Warnings, cautions, and notes

WARNING

When you see this word and symbol, the message that follows is especially vital. It signals a potentially hazardous situation which, if not avoided, could result in death or serious injury. This message will tell you what the hazard is, what can happen if you don't heed the warning, and how to avoid it.

Example:
WARNING! Be sure to use a circuit breaker designed to meet liftgate amperage requirements. An incorrectly specified circuit breaker could result in an electrical overload or fire situation. Follow the liftgate installation instructions and use a circuit breaker with the recommended capacity.

CAUTION

Signals a potentially hazardous situation which, if not avoided, could result in minor or moderate injury or damage to the vehicle.

Example: CAUTION: Never use a torch to make a hole in the rail. Use the appropriate drill bit.

NOTE

Provides general information: for example, the note could warn you on how to avoid damaging your vehicle or how to drive the vehicle more efficiently.

Example: Note: Be sure to provide maintenance access to the battery box and fuel tank fill neck.

SAFETY AND COMPLIANCE

FEDERAL MOTOR VEHICLE SAFETY STANDARDS AND COMPLIANCE
As an Original Equipment Manufacturer, Peterbilt Motors Company ensures that our products comply with all applicable U.S. or Canadian Federal Motor Vehicle Safety Standards. However, the fact that this vehicle has no fifth wheel and that a Body Builder (Intermediate or Final Stage Manufacturer) will be doing additional modifications means that the vehicle was incomplete when it left the build plant.

Incomplete Vehicle Certification
An Incomplete Vehicle Document is shipped with the vehicle, certifying that the vehicle is not complete. See Figure 21. In addition, affixed to the driver's side door frame or edge is an Incomplete Vehicle Certification label. See Figure 22.

NOTE

These documents list the U.S. or Canadian Federal Motor Vehicle Safety Standard regulations that the vehicle complied with when it left the build plant. You should be aware that if you add, modify or alter any of the components or systems covered by these regulations, it is your responsibility as the Intermediate or Final Stage Manufacturer to ensure that the complete vehicle is in compliance with the particular regulations upon completion of the modifications.
U.S. EPA Noise Label (U.S. registered vehicles only)

Tire, Rim and Weight Rating Data label
Safety Mark (Canadian Registry Only)

Final Stage Manufacturer Label to be installed by Final Stage Manufacturer
Chassis Serial Number
Vehicle Emission Control Information Label
Major Components and Weights Label

Incomplete Vehicle Certification Label
FIGURE 2-1. Incomplete Vehicle Certification Document

FIGURE 2-2. Locations of Certification Labels - Driver's Door and Frame

As the Intermediate or Final Stage Manufacturer, you should retain the Incomplete Vehicle Document for your records. In addition, you should record and retain the manufacturer and serial number of the tires on the vehicle. Upon completion of the vehicle (installation of the body and any other modifications), you should affix your certification label to the vehicle as required by Federal law. This tag identifies you as the "Intermediate or Final Stage Manufacturer" and certifies that the vehicle complies with Federal Motor Vehicle Safety Standards. (See Figure 22.) Be advised that regulations affecting the intermediate and final stage manufacturer may change without notice. Ensure you are referencing the most updated copy of the regulation during the certification and documentation processes.

In part, if the final stage manufacturer can complete and certify the vehicle within the instruction in the incomplete vehicle document (IVD) the certification label would need a statement that reads, "This vehicle has been completed in accordance with the prior manufacturers, IVD where applicable. This vehicle conforms to all applicable Federal Motor Vehicle Safety Standards [and Bumper and Theft Prevention Standards if applicable] in effect in (month, year)."

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SAFETY AND COMPLIANCE

However, if the vehicle cannot be completed and certified with in the guidance provided in the IVD, the final stage manufacturer must ensure the vehicle conforms to all applicable Federal Motor Vehicle Safety Standards (FMVSS). The final stage manufactures certification label would need a statement that reads, "This vehicle conforms to all applicable Federal Motor Vehicle Safety Standards [and Bumper and Theft Prevention Standards if applicable] in effect in (month, year).These statements are just part of the changes to the new certification regulation. Please refer to the Feb 15, 2005 final rule for all of the details related to this regulation. You can contact NTEA Technical Services Department at 1-800441- NTEA for a copy of the final rule (DocID 101760).
For Canadian final stage manufacturers see:
http://www.gazette.gc.ca/index-eng.html; and http://www.tc.gc.ca/eng/acts-regulations/menu.htm for the regulations.
Or contact: Transport Canada Tower C, Place de Ville, 330 Sparks Street Ottawa, Ontario K1A 0N5 (613) 990-2309 TTY: 1-888-675-6863

Noise and Emissions Requirements

NOTE

This truck may be equipped with specific emissions control components/systems* in order to meet applicable Federal and California noise and exhaust emissions requirements. Tampering with these emissions control components/systems* is against the rules that are established by the U.S Code of Federal Regulations, Environment Canada Regulations and California Air Resources Board (CARB). These emissions control components/systems* may only be replaced with original equipment parts.

Additionally, most vehicles in North America will be equipped with a Greenhouse Gas (GHG) "Vehicle Emission Control Information" door label indicating its certified configuration. The vehicle components listed on this label are considered emission control devices.
Modifying (i.e. altering, substituting, relocating) any of the emissions control components/systems defined above will affect the noise and emissions performance/certification. Modifications that alter the overall shape and aerodynamic performance of a tractor will also affect the emission certification. If modifications are required, they must first be approved by the manufacturer. Unapproved modifications could negatively affect emissions performance/certification. There is no guarantee that proposed modifications will be approved.
Tires may be substituted provided the new tires possess a Coefficient of rolling resistance (Crr) equal to or lower than Crr of the original tires. Consult with your tire supplier(s) for appropriate replacement tires.

Contact the engine manufacturer for any requirements and restrictions prior to any modifications.
· For Cummins Contact 1-800-DIESELS or your local Cummins distributor. Reference AEB 21.102.
It is possible to relocate the DEF tank; however the relocation requirements need to be followed. Any variances from the relocation requirements may cause the emissions control components/systems to operate improperly potentially resulting in engine de-rate.

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SAFETY AND COMPLIANCE

NOTE

All 2017 engine emissions certified vehicles will be equipped with an On-Board Diagnostics (OBD) system. The OBD system is designed to detect malfunctions of any engine or vehicle component that may increase exhaust emissions or interfere with the proper performance of the OBD system itself All diesel engines will be equipped with an On-Board Diagnostics (OBD) system. The OBD system consists of computer program on one or more of the vehicle's Electronic Control Units (ECUs). This program uses information from the control system and from additional sensors to detect malfunctions. When a malfunction is detected, information is stored in the ECU(s) for diagnostic purposes. A Malfunction Indicator Light (MIL) is illuminated in the dash to alert the driver of the need for service of an emission-related component or system.

To ensure compliance to emissions regulations, the final configuration of certain features of the completed vehicle must meet specific requirements. This section describes requirements relevant for only the most common or critical modifications done by body builders. For a complete description of acceptable modifications, see the application guidance available from the manufacturer of the engine installed in the chassis.

Fuel System
The following are highlights of some of the more common or critical aspects of this system. The overall system restriction may not exceed the restriction limitations set forth by the engine manufacturer for both supply and return.
· Ensure that fuel lines are not pinched or can potentially be damaged when installed between body and frame
· Fuel lines must be routed and secured without dips or sags · There must be easy access to filter(s) and fill cap · The tank vent may not obstructed · Added accessories (heaters, generators) cannot introduce air into system · Fuel tank must be located so that the full level is not above cylinder head · "Ultra-Low Sulfur Fuel Only" labels must be present on the dash and fuel fill · Modification of the pressure side secondary filter and plumbing is not allowed without engine
manufacturer approval · Body installation of fuel tank or routing of lines must not cause significant increase in fuel temperature · Fuel hoses shall meet or exceed OEM supplied hose material construction specifications
Compressed Air System
The following are highlights of some of the more common or critical aspects of this system. · Air system modification must meet applicable FMVSS regulations · Compressed Air tank may not be modified (exception addition or removal of fittings or relocation of the tank) · Added devices or bodywork may not interfere with or rub air lines

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SAFETY AND COMPLIANCE

· Air supply to the engine doser may not be restricted or disconnected · Air lines should be routed, protected from heat, and properly secured to prevent damage
from other components
· Care should be taken so that air lines do not rub against other components · Care should be taken to protect the air system from heat sources

Exhaust and Exhaust After-treatment System
The following are highlights of some of the more common or critical aspects of this system. · The following after-treatment and exhaust system components may not be modified: · DPF assembly · SCR Catalyst assembly · Exhaust pipes between the engine and after-treatment devices (DPF, SCR Catalyst) and between after-treatment devices · NOx Sensors · PM Sensor · The following modifications may only be done within the guidelines of the "DEF System Relocation Guide." · Modifications to Diesel Exhaust Fluid (DEF) throttle, suction, or pressure lines · Modification or relocation of the DEF tank · Modification of coolant lines to and from the DEF tank · All DEF and coolant lines should be routed, protected, and properly secured to prevent damage during vehicle operation or other components · The DPF/SCR catalyst or its mounting may not be modified · The NOx sensor may not be relocated or altered in any way; this includes re-clocking the aftertreatement canister or reorienting the sensor(s) · Exhaust pipes used for tailpipes/stacks must be properly sized, and must prevent water from entering · Ensure adequate clearance between the exhaust and body panels, hoses, and wire harnesses · The body in the vicinity of the DPF must be able to withstand temperatures up to 400°C (750°F) · Do not add thermal insulation to the external surface of the DPF · The SCR water drain hole may not be blocked · Allow adequate clearance (25mm (1 inch)) for servicing the DPF sensors, wiring, and clamped joints · Drainage may not come in contact with the DPF/SCR, sensors or wiring

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SAFETY AND COMPLIANCE

· Allow sufficient clearance for removing sensors from DPF. Thermistors require four inches. Other sensors require one inch
· Wiring should be routed, protected from heat, and properly secured to prevent damage from other components
· The exhaust system from an auxiliary power unit (APU) must not be connected to any part of the vehicle after-treatment system or vehicle tail pipe.

Cooling System
The following are highlights of some of the more common or critical aspects of this system. · Modifications to the design or locations of fill or vent lines, heater or defroster core, and surge tank are not recommended · Additional accessories plumbed into the engine cooling system are not permitted, at the risk of voiding vehicle warranty · Coolant level sensor tampering will void warranty · When installing auxiliary equipment in front of the vehicle, or additional heat exchangers, ensure that adequate air flow is available to the vehicle cooling system. Refer to engine manufacturer application guidelines for further detail · When installing FEPTO drivelines, the lower radiator anti-recirculation seal must be retained with FEPTO driveline clearance modification only · Changes made to cooling fan circuit and controls are not allowed, with the exception of AC minimum fan on time parameter · See owner's manual for appropriate winter front usage
Air Intake System
The following are highlights of some of the more common or critical aspects of this system. · The air intake screen may not be blocked, either fully or partially · Modification to the air intake system may not restrict airflow. For example, pipe diameter may not be reduced · All sensors must be retained in existing locations · To retain system seal, proper clamp torque must be used. Refer to service manual for proper clamp torque

Charge Air Cooler System
The following are highlights of some of the more common or critical aspects of this system. · The Charge Air Cooler may not be modified · The installation of engine overspeed shutdown devices must not introduce restriction in the intake system · All plumbing associated with the charge air cooler may not be modified

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SECTION 3 DIMENSIONS
INTRODUCTION
This section has been designed to provide enough information to successfully layout a chassis in the body planning process. All dimensions are inches unless otherwise noted. Optional equipment may not be depicted. Please contact your local Peterbilt dealer if more dimensional information is desired.

ABBREVIATIONS

Throughout this section and in other sections as well, abbreviations are used to describe certain characteristics on your vehicle. Table 3-1 below lists the abbreviated terms used.

TABLE 3-1. Abbreviations Used

BFA

Bumper to front axle

BOC

Back of cab

Cab to axle. Measured from the back of the cab to the centerline of the rear axle(s).

EOF

End of frame

FAX

Front axle

FOF

Front of frame

Wheelbase

OVERALL DIMENSIONS
This section includes drawings and charts of the Peterbilt Model 520.
On the pages that follow, detail drawings show particular views of the vehicle; all dimensions are in inches (in). They illustrate important measurements critical to designing bodies of all types. See the "Table of Contents" at the beginning of the manual to locate the drawing that you need.
All heights are given from the bottom of the frame rail.
Peterbilt also offers .dxf files and frame layouts of ordered chassis prior to build. Please speak with your local dealership to request this feature when specifying your chassis.

DIMENSIONS

FIGURE 3-1. Various Views of the Model 520

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DIMENSIONS

EXTERIOR DIMENSIONS

FIGURE 3-2. 520 Cab Dimensions
Notes: 1. Shown with optional HD Air intake Pre-Cleaner 2. Shown with optional front cab guard 3. Door dimension is 33.4"W x 61"H 4. Diesel truck shown, but Natural Gas has same BOC dimension for After-treatment.

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DIMENSIONS

EXTERIOR DIMENSIONS

FIGURE 3-3. 520 Overall Width Dimensions
Notes: 1. Shown with Velvac mirrors 2. West coast mirrors 111.8"

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DIMENSIONS

INTERIOR DIMENSIONS

FIGURE 3-4. View Looking Through Cab to the Driver's Side (LH Steer)

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DIMENSIONS

INTERIOR DIMENSIONS

FIGURE 3-5. View Looking Through the Cab At The RH Drive Standup Version

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DIMENSIONS

INTERIOR DIMENSIONS

FIGURE 3-6. Top View of LH Steer Model

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DIMENSIONS

INTERIOR DIMENSIONS

FIGURE 3-7. Floor Dimensions for LH Floor

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DIMENSIONS

INTERIOR DIMENSIONS

FIGURE 3-8. Passenger Floor RH Stand Up

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DIMENSIONS

FRAME RAILS
Frame rail configurations are shown in Figure 3-8. The under cab area of the 520 frame rails are splayed as shown in Figure 3-9. Frame height, flange and structural values can be found in the Body Mounting Section.

FIGURE 3-9. Frame Rail Configurations
NOTE: The outserted frame section does not extend through the rear suspension area. The outserted frame section does not extend through the splayed area.

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DIMENSIONS

FRAME RAILS

FIGURE 3-10. Model 520 Frame Rail
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DIMENSIONS

FRAME HEIGHT CHARTS

FIGURE 3-4. Frame Height
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DIMENSIONS

TABLE 3-2. Front Frame Height "A" 520

NOTES: 1) Omit spacer block standard. 2) 25mm spacer block standard and required. 3) Standard 3-1/2" drop axle heights shown, for 5" drop axles, subtract an additional 1-1/2". 4) Spacer blocks are used by Engineering to obtain level frame and are not options. 5) "A" dimension shown is to bottom of frame rail. Add frame rail height dimension for frame height.

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DIMENSIONS

REAR FRAME HEIGHTS "C"

Suspension LOW AIR LEAF AIR TRAC
REYCO 79KB
REYCO 102 REYCO 102AR (AIR)

TABLE 3-3. Single Drive Suspension Heights

Rating

Version

Light Height

21,000 lbs.

Standard

6.8

20,000 lbs.

Standard

11.4

23,000 lbs.

Standard

11.4

20,000 lbs.

Taper-leaf (3.38" saddle)

9.4

21,000 lbs.

Taper-leaf (1.38" saddle)

7.4

23,000 lbs.

Multi-leaf (1.38" saddle)

8.8

26,000 lbs.

Multi-leaf (1.38" saddle)

9.2

28,000 lbs.

Multi-leaf (1.38" saddle)

9.6

31,000 lbs.

Multi-leaf (1.38" saddle)

10.7

23K-29K lbs. 4.38 saddle

12.0

23K-29K lbs. 4.63 saddle

12.2

29,000 lbs.

3.50 saddle

11.7

31,000 lbs.

3.50 saddle

12.2

31,000 lbs.

4.38 saddle

12.5

31,000 lbs.

4.63 saddle

12.7

17K -23K

Standard Low

9.3 8.3

Laden Height
6.5 11.0 11.0
11.8
9.8
11.6
11.8
12.3
13.3
10.2 10.4 10.0 10.5 10.7 10.9 9.3 8.3

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DIMENSIONS

Suspension AIR LEAF LOW AIR LEAF FLEX AIR LOW-LOW AIR LEAF AIR TRAC QUADRAFLEX

TABLE 3-4. Tandem Drive Peterbilt Suspension Heights

Light

Rating

Version

Height

38,000 lbs.

12.0

40,000 lbs.

8.8

38,000 lbs.

8.8

40,000 lbs.

6.8

40K-46K lbs.

11.4

38,000 lbs.

Taper-leaf

10.6

Laden Height
11.7 8.5 8.5
6.5
11.0 8.7

Suspension NEWAY AD NEWAY ADZ

TABLE 3-5. Tandem Drive Neway Suspension Heights

Light

Rating

Version

Height

52,000 lbs.

10.0

46K-52K lbs.

10.0

Laden Height
10.0
10.0

Suspension
REYCO 102 MULTILEAF
REYCO 102AR (AIR)

TABLE 3-6. Tandem Drive Reyco Suspension Heights

Rating

Version

Light Height

1.75 saddle (STD)

11.7

40,000 lbs.

1.38 saddle

10.2

3.38 saddle

13.4

44,000 lbs.

1.75 saddle (STD) 1.38 saddle

11.7 11.5

34K-40K

STD LOW

8.3

Laden Height
9.8 8.3 11.5 9.8 9.7
8.3

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DIMENSIONS

TABLE 3-7. Tandem Drive Chalmers Suspension Heights

Light

Laden

Suspension

Rating

Version

Height

LOW

11.1

8.9

CHALMERS 854 & 860

40,000 lbs.

HIGH X-HIGH

12.4

10.2

14.5

12.2

XX-HIGH

17.2

14.9

LOW

11.3

8.9

CHALMERS 854 & 860

46,000 lbs.

HIGH X-HIGH

12.5

10.1

14.7

12.2

XX-HIGH

17.3

14.9

LOW

11.3

8.9

CHALMERS 854 & 860

50K-52K

HIGH X-HIGH

12.5

10.1

14.6

12.1

XX-HIGH

17.3

14.8

LOW

11.2

8.8

CHALMERS 872

46,000 lbs.

HIGH X-HIGH

12.5

10.3

14.6

12.2

XX-HIGH

17.3

14.9

LOW

11.2

8.8

CHALMERS 872

50,000 lbs.

HIGH X-HIGH

12.5

10.3

14.6

12.1

XX-HIGH

17.3

14.8

NOTES:

1) Laden dimension shown with standard restrictor cans. Add 0.7" for #29 High Stability Restrictor Cans.

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DIMENSIONS

TABLE 3-8. Tandem Drive Hendrickson Suspension Heights

Suspension

Rating

Version

Light Height

RT-403

40,000 lbs.

6.00 7.188 (std.)

9.9 11.2

RTE-403

40,000 lbs.

6.00 7.188 (std.)

9.9 11.2

12.80

5.8

R-403

40,000 lbs.

15.81 (std.)

8.8

17.60

10.6

12.25

9.9

RS-403

40,000 lbs.

14.00 (std.)

11.7

15.25

12.9

HMX

40,000 lbs.

16.5 (low)

10.6

18.5 (std.)

12.6

HMX

46,000 lbs.

16.5 (low)

10.6

18.5 (std.)

12.6

16.5

11.6

40,000 lbs

17.5

12.6

18.5 (std.)

13.6

HMX EX

16.5

11.6

46,000 lbs

17.5

12.6

18.5 (std.)

13.6

52,000 lbs

18.5

13.6

HN462

46,000 lbs.

20.25 (high)

15.0

R-463

46,000 lbs.

15.75 (std.)

8.8

20.50

13.5

12.25

9.7

RS-463

46,000 lbs.

14.0 (std.)

11.5

15.25

12.7

6.00

11.3

RT-463

46,000 lbs.

7.188 (std.)

13.0

11.00

16.3

RTE-463

46,000 lbs.

7.188 (std.)

11.6

11.00

15.4

RS-503

50,000 lbs.

14.0 (std.)

11.7

15.25

12.9

RT-503

50,000 lbs.

7.188 (std.)

12.1

11.0 1

16.4

RTE-503

50,000 lbs.

7.188 (std.)

11.6

11.00

15.4

NOTES: 1) With SISU 70k axle subtract 0.39" from light/laden 2) With SISU 70k axle subtract 0.28" from light and 0.39" from laden

Laden Height
8.9 10.1 8.4 9.5 5.8 8.8 10.6 9.1 10.8 12.1 9.5 11.5 9.5 11.5 9.5 10.5 11.5 9.5 10.5 11.5 11.5 13.3 8.8 13.5 8.9 10.6 11.9 10.5 11.4 15.2 10.2 14.0 10.8 12.1 11.1 15.4 10.2 14.0

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DIMENSIONS

TABLE 3-8 (cont). Tandem Drive Hendrickson Suspension Heights

RS-523
RT-523 , RT-650
HN522
RS650
R650 * R850 w/70K Meritor R850 w/SISU 70K RS850 w/SISU 70K

52,000 lbs. 52K-65K 52,000 lbs. 65,000 lbs. 65,000 lbs. 85,000 lbs. 85,000 lbs.

14.0 (std.) 7.188 (std.) 11.00 18.50 (std.) 15.00 (std.)
19.00 20.25 (std.) 20.25 20.25 16.75

11.7 12.1 16.4 12.6 12.0 1 16.0 2 12.5 12.0 12.1 11.5

10.8 11.1 15.4 11.5 11.0 2 15.1 2 12.5 12.0 12.1 10.6

TABLE 3-9. Tri-Drive Suspension Heights

SUSPENSION TRI-DRIVE SUSPENSION AIR TRAC NEWAY ADZ369 NEWAY ADZ378

RATING (lbs.)
40K-46K 69,000 78,000

LIGHT (in.)
11.4 10.0 10.0

LOADED (in.)
11.0 10.0 10.0

Peterbilt Motors Company

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DIMENSIONS

REAR SUSPENSION LAYOUTS
The rear suspension layouts are provided as a tool to help layout bodies prior to arrival. The applicable dimensions are shown. Verify the axle spacing that is shown, as alternate spacing may exist and could change some of the dimensions. The dimensions shown below are the most typical installations, in special cases some hole locations will move.
If the holes shown will be used for body installation, please confirm with the local Peterbilt dealer the drawing below will be the installation used on the specific truck. In this case, ordering the frame layout of the chassis is advised. This can be done on any Peterbilt truck, and will be provided ahead of the build schedule. Ensure proper torque to reinstall any suspension components. See Tables 5-1 and 5-2 on page 5-4.
For hole locations not detailed, please work with the local Peterbilt Dealer to request that information.

Peterbilt Motors Company

3- 19

DIMENSIONS

FIGURE 3-5. Reyco 79KB Frame Drilling (Dimensions In Inches)

Peterbilt Motors Company

3- 20

DIMENSIONS

FIGURE 3-6. Reyco 102AR Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 21

DIMENSIONS

FIGURE 3-7. Neway ADZ 252 Frame Drilling (Dimensions In Inches)

Peterbilt Motors Company

3- 22

DIMENSIONS

FIGURE 3-8. Neway ADZ 369/378 Frame Drilling (Dimensions In Inches)

Peterbilt Motors Company

3- 23

DIMENSIONS

FIGURE 3-9. Peterbilt Air Leaf Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 24

DIMENSIONS

FIGURE 3-10. Peterbilt Air Trac Single Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 25

DIMENSIONS

FIGURE 3-11. Peterbilt Air Trac Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 26

DIMENSIONS

FIGURE 3-12. Peterbilt Air Trac Tri-Drive Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 27

DIMENSIONS

FIGURE 3-13. Peterbilt Low and Low-Low Air Leaf Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 28

DIMENSIONS

FIGURE 3-14. Chalmers 854 Tandem Frame Drilling

Peterbilt Motors Company

3- 29

DIMENSIONS

FIGURE 3-15. Hendrickson HMX Tandem Frame Drilling

Peterbilt Motors Company

3- 30

DIMENSIONS

FIGURE 3-16. Hendrickson RT/RTE Tandem Frame Drilling

Peterbilt Motors Company

3- 31

DIMENSIONS

FIGURE 3-17. Hendrickson HN Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

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DIMENSIONS

FIGURE 3-18. Hendrickson R Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 33

DIMENSIONS

FIGURE 3-19. Hendrickson RS Tandem Frame Drilling (Dimensions In Millimeters)

Peterbilt Motors Company

3- 34

DIMENSIONS

PUSHER AND TAG AXLE LAYOUTS
The rear pusher axle layouts are provided as a tool to help layout bodies prior to arrival. The applicable dimensions are shown. When using the pusher layouts to determine available frame space please be aware clearances required are not shown. For information that may not be detailed in these drawings, work with your local Peterbilt Dealer to request that information.

FIGURE 3-20. Hendrickson SC8, SC10, SC13, SCO13, FX or FXO Pusher or Tag
Peterbilt Motors Company

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DIMENSIONS

FIGURE 3-21. Hendrickson SC20 Pusher or Tag
Peterbilt Motors Company

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DIMENSIONS

FIGURE 3-22. Hendrickson HLR2 Pusher
Peterbilt Motors Company

3- 37

DIMENSIONS

FIGURE 3-23. Hendrickson HLM Pusher or Tag
Peterbilt Motors Company

3- 38

DIMENSIONS

FIGURE 3-24. Watson-Chalin SL2065 Pusher or Tag
Peterbilt Motors Company

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DIMENSIONS

FIGURE 3-25. Watson-Chalin AL2200 Pusher or Tag
Peterbilt Motors Company

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DIMENSIONS

FIGURE 3-26. Watson-Chalin SL0893SSR or SL1093SSR Pusher or Tag

Peterbilt Motors Company

3- 41

DIMENSIONS

FIGURE 3-27. Watson-Chalin SL1190SSR Pusher or Tag
Peterbilt Motors Company

3- 42

DIMENSIONS

EXHAUST HEIGHT CALCULATIONS

The exhaust height calculations are provided as a tool to help layout bodies prior to arrival as well as aid in exhaust configuration selection.

Please work with the local Peterbilt Dealer to request additional information if required.

The overall exhaust height (EH) can be estimated based on the following formula: EH = Y + SPL + (A + B + C + D) / 2

TABLE 3-10. Exhaust Heights

"Y" Dimension

Exhaust Location
BOC Vertical

ISLG 74.2"

ISLG Near Zero
80.5"

MX-11 84.4"

PX-9 HHP PX-9 MHP
81.2" 79.7"

NOTES: 1) For "A" and "C" values, reference the FRAME HEIGHTS section for front or rear suspension height. 2) For "B" and "D" values, reference the tire manufacturer's website or catalog for static loaded radius (SLR). 3) For Stand Pipe Length (SPL) values, reference the truck sales order. 4) Not applicable to horizontal exhaust.

FIGURE 3-27. Exhaust Height Calculations
Peterbilt Motors Company

3- 43

DIMENSIONS

GROUND CLEARANCE CALCULATIONS
The ground clearance tables are provided as a tool to help layout bodies prior to arrival, not all optional equipment is included.

The ground clearance (GC) can be estimated based on the following formula: GC = (A + B + C + D) / 2 - Y

TABLE 3-11. Ground Clearance

Y = DISTANCE FROM BOTTOM OF FRAME TO BOTTOM OF COMPONENT

Component

Cab Access Step

14.7"

Alum Space Saver (Shown Below) 10.0"

Steel Space Saver Battery Box

11.8"

Narrow Space Saver Battery Box 11.9"

Fender Mounted Battery Box 20" Diameter Fuel Tank

4.4" 12.4"

23" Diameter Fuel Tank

15.2"

26" Diameter Fuel Tank

18.0"

FIGURE 3-28. Ground Clearance Calculations

FIGURE 3-29. Space Saver Battery Box
NOTES: 1) For "A" and "C" values, reference the FRAME HEIGHTS section for front suspension height or rear suspension
height. 2) For "B" and "D" values, reference the tire manufacturer's website or catalog for overall diameter or static loaded
radius (SLR).

Peterbilt Motors Company

3- 44

DIMENSIONS

OVERALL CAB HEIGHT CALCULATIONS
The overall cab height tables are provided as a tool to help layout bodies prior to arrival, no roof mounted equipment is included. The overall cab height (CH) can be estimated based on the following formula: CH = (A + B + C + D) / 2 + 73.2"

FIGURE 3-30. Overall Cab Height Calculations
NOTES: 1) For "A" and "C" values, reference the FRAME HEIGHTS section for front suspension height or rear suspension
height. 2) For "B" and "D" values, reference the tire manufacturer's website or catalog for overall diameter or static loaded
radius (SLR). 3) Roof mounted content such as horns and antennas are not included.

Peterbilt Motors Company

3- 45

DIMENSIONS

FRAME COMPONENTS
This section includes drawings and charts related to common frame mounted components. Optional equipment may not be depicted.
Please work with the local Peterbilt Dealer to request additional information if required. At the dealer's request, Peterbilt can provide frame layouts for individual vehicles prior to delivery.

FUEL TANKS

FIGURE 3-31. Fuel Tanks

TABLE 3-12. Fuel Tank Dimensions

DIMENSIONS

20" TANK

22.7

12.4

10.3

27.5

23" TANK

24.5

15.2

10.5

31.0

26" TANK

27.2

18.0

10.6

33.7

Peterbilt Motors Company

TABLE 3-13. Fuel Tank Data

GALLONS

TANK LENGTH

USEABLE TOTAL 20" 23" 26"

33.3 N/A N/A

43.2 34.5 26.7

51.3 40.7 31.5

57.3 46.8 36.2

65.3 52.9 41.0

N/A 59.0 45.7

100

110

N/A *65.1 50.5

110

121

N/A N/A 55.2

120

131

N/A 77.3 60.0

135

147

N/A N/A 66.8

150

163

N/A N/A *74.0

NOTES: 1) * Largest capacity without a weld seam

3- 46

SECTION 4 BODY MOUNTING

INTRODUCTION

This section has been designed to provide guidelines to aid in body mounting. This is not intended as a complete guide, rather as general information. Body mounting strategies are unique to each body type, and body builders must determine the appropriate method.
Please contact your local Peterbilt dealer if more information is desired.
FRAME RAILS

Frame rail information is provided in Table 4-1 and Table 4-2.

TABLE 4-1. Single Frame Rails

Rail Height (in.)
10 3/4

Flange Width (in.)
3.50

Web Thickness (in)
0.375

Section Modulus (cu. In.)
17.8

RBM (per rail) (in.-lbs)
2,136,000

Weight (per rail) (lbs/in.)
1.74

TABLE 4-2. Built-up Frame Rails

Main Rail

Height

(in.)

Insert

Outsert

Section Modulus (cu. In.)

RBM (per rail) (in.-lbs)

10 3/4

9.875 x 2.87 x .250

None

28.9

3,468,000

10 3/4

9.875 x 2.87 x .250 11.63 x 3.87 x .375

45.7

5,484,000

(1)Weight per inch in the outserted area only. (Outsert starts behind the rear front spring hanger)

Weight (per rail) (lbs/in.) 2.78
4.67(1)

BODY MOUNTING

CRITICAL CLEARANCES
REAR TIRES AND CAB

CAUTION: Insufficient clearance between rear tires and body structure could cause damage to the body during suspension movement.
Normal suspension movement could cause contact between the tires and the body. To prevent this, mount the body so that the minimum clearance between the top of the tire and the bottom of the body is 8 inches (203 mm). This should be measured with the body empty. See Figure 4-1.

FIGURE 4-1. Minimum Clearance Between Top of Rear Tires and Body Structure Overhang CAUTION: Maintain adequate clearance between back of cab and the front (leading edge) of mounted body. It is recommended the body leading edge be mounted 4 in. behind the cab. See Figure 4-2.
NOTE: Be sure to provide access to all maintenance and service components.

FIGURE 4-2. Minimum Back of Cab Clearance

Peterbilt Motors Company

4-2

BODY MOUNTING

BODY MOUNTING USING BRACKETS

CAUTION: Always install a spacer between the body subframe and the top flange of the frame rail. Installation of a spacer between the body subframe and the top flange of the frame rail will help prevent premature wear of the components due to chafing or corrosion.

WARNING! When mounting a body to the chassis, DO NOT drill holes in the upper or lower flange of the frame rail. If the frame rail flanges are modified or damaged, the rail could fail prematurely and cause an accident. Mount the body using body mounting brackets or Ubolts.
FRAME SILL
If the body is mounted to the frame with brackets, we recommend a frame sill spacer made from a strip of rubber or plastic (delrin or nylon). These materials will not undergo large dimensional changes during periods of high or low humidity. The strip will be less likely to fall out during extreme relative motion between body and chassis. See Figure 4-3.

FIGURE 4-3. Spacer Between Frame Sill and Body Rail Rubber or Plastic

Peterbilt Motors Company

4-3

BODY MOUNTING

BRACKETS
When mounting a body to the chassis with brackets, we recommend designs that offer limited relative movement, bolted securely but not too rigid. Brackets should allow for slight movement between the body and the chassis. For instance, Figure 4-4 shows a high compression spring between the bolt and the bracket, and Figure 4-5 shows a rubber spacer between the brackets. These designs will allow relative movement between the body and the chassis during extreme frame racking situations. Mountings that are too rigid could cause damage to the body. This is particularly true with tanker installations.

FIGURE 4-4. Mounting Brackets

FIGURE 4-5. Mounting Brackets

Peterbilt Motors Company

4-4

BODY MOUNTING

MOUNTING HOLES
When installing brackets on the frame rails, the mounting holes in the chassis frame bracket and frame rail must comply with the general spacing and location guidelines illustrated in Figure 4-6.

FIGURE 4-6. Hole Location Guidelines for Frame Rail and Bracket

FIGURE 4-7. Crossmember Gusset Hole Patterns (Additional Holes Available in 50 mm Horizontal Increments)

Peterbilt Motors Company

4-5

BODY MOUNTING

FRAME DRILLING
WARNING! When mounting a body to the chassis, DO NOT drill holes in the upper or lower flange of the frame rail. If the frame rail flanges are modified or damaged, the rail could fail prematurely and cause an accident. Mount the body using body mounting brackets or Ubolts.

FIGURE 4-8. Frame Rail Flange Drilling Prohibited
WARNING! DO NOT drill closely spaced holes in the frame rail. Frame hole centers of two adjacent holes should be spaced no less than twice the diameter of the largest hole. Closer spacing could induce a failure between the two holes.
CAUTION: An appropriately sized bolt and nut must be installed and torqued properly in all unused frame holes. Failure to do so could result in a frame crack initiation around the hole.
CAUTION: Use care when drilling the frame web so the wires and air lines routed inside the rail are not damaged. Failure to do so could cause an inoperable electrical or air system circuit.
CAUTION: Never use a torch to make holes in the rail. Use the appropriate diameter drill bit. Heat from a torch will affect the material properties of the frame rail and could result in frame rail cracks.
CAUTION: The frame hole diameter should not exceed the bolt diameter by more than 0.060 inches (1.5mm).

Peterbilt Motors Company

4-6

BODY MOUNTING

BODY MOUNTING USING UBOLTS
If the body is mounted to the frame with Ubolts, use a hardwood sill (minimum 1/2 inch thick) between the frame rail and body frame to protect the top surface of the rail flange.
WARNING! Do not allow the frame rails or flanges to deform when tightening the Ubolts. It will weaken the frame and could cause an accident. Use suitable spacers made of steel or hardwood on the inside of the frame rail to prevent collapse of the frame flanges.
Use a hardwood spacer between the bottom flange and the Ubolt to prevent the Ubolt from notching the frame flange. See Figure 4-9.

FIGURE 4-9. Acceptable U-Bolt Mounting with Wood and Fabricated Spacers

Peterbilt Motors Company

4-7

BODY MOUNTING

WARNING! Do not allow spacers and other body mounting parts to interfere with brake lines, fuel lines, or wiring harnesses routed inside the frame rail. Crimped or damaged brake lines, fuel lines, or wiring could result in loss of braking, fuel leaks, electrical overload or a fire. Carefully inspect the installation to ensure adequate clearances for air brake lines, fuel lines, and wiring. See Figure 4-10.

FIGURE 4-10. Clearance Space for Air Lines and Cables WARNING! Do not notch frame rail flanges to force a Ubolt fit. Notched or damaged frame flanges could result in premature frame failure. Use a larger size U-bolt.
CAUTION: Mount Ubolts so they do not chafe on frame rail, air or electric lines.

Peterbilt Motors Company

4-8

BODY MOUNTING

REAR BODY MOUNT
When Ubolts are used to mount a body we recommend that the last body attachment be made with a "fishplate" bracket. See Figure 4-11. This provides a firm attaching point and helps prevent any relative fore or aft movement between the body and frame. For hole location guidelines, See Figure 4-6.

FIGURE 4-11. Fishplate Bracket at Rear End of Body

Peterbilt Motors Company

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SECTION 5 FRAME MODIFICATIONS
INTRODUCTION
Peterbilt offers customer specified wheelbases and frame overhangs. So, in most cases frame modifications should not be necessary.
However, some body installations may require slight modifications, while other installations will require extensive modifications. Sometimes an existing dealer stock chassis may need to have the wheelbase changed to better fit a customer's application. The modifications may be as simple as modifying the frame cutoff, or as complex as modifying the wheelbase.
DRILLING RAILS
If frame holes need to be drilled in the rail, see SECTION 4 BODY MOUNTING for more information.
MODIFYING FRAME LENGTH
The frame overhang after the rear axle can be shortened to match a particular body length. Using a torch is acceptable; however, heat from a torch will affect the material characteristics of the frame rail. The affected material will normally be confined to within 1 to 2 inches (25 to 50mm) of the flame cut and may not adversely affect the strength of the chassis or body installation.
CHANGING WHEELBASE
Changing a chassis' wheelbase is not recommended. Occasionally, however, a chassis wheelbase will need to be shortened or lengthened. Before this is done there are a few guidelines that should to be considered.
WARNING! When changing the wheelbase, be sure to follow the driveline manufacturer's recommendations for driveline length or angle changes. Incorrectly modified drivelines can fail prematurely due to excessive vibration. This can cause an accident and severe personal injury.
WARNING! When changing the wheelbase, contact your local Peterbilt dealership for support. It is important to verify that these changes do not compromise vehicle frame strength.
Before changing the wheelbase, the driveline angles of the proposed wheelbase need to be examined to ensure no harmful vibrations are created. Consult with the driveline manufacturer for appropriate recommendations.
Before the rear suspension is relocated, check the new location of the spring hanger brackets. The new holes for the spring hanger brackets must not overlap existing holes and should adhere to the guidelines in the "FRAME DRILLING" section of this manual.
When shortening the wheelbase, the suspension should be moved forward and relocated on the original rail. The rail behind the suspension can then be cut to achieve the desired frame overhang. See Figure 5-1.

FRAME MODIFICATIONS

FIGURE 5-1. Wheelbase Customization

Peterbilt Motors Company

5-2

FRAME MODIFICATIONS

CROSSMEMBERS
After lengthening a wheelbase, an additional crossmember may be required to maintain the original frame strength. Contact Dealer for crossmember locations.
· The maximum allowable distance between the forward suspension crossmember and the next crossmember forward is 47.2 inches (1200 mm). If the distance exceeds 47.2 inches (1200 mm) after the wheelbase is lengthened, add a crossmember between them. See Figure 5-2. See Figure 4-7 on page 4-5 for crossmember hole patterns.

FIGURE 5-2. Crossmember Spacing Requirements

Peterbilt Motors Company

5-3

FRAME MODIFICATIONS

TORQUE REQUIREMENTS

Torque values apply to fasteners with clean threads, lightly lubricated, with hardened steel washers, and nylon-insert nuts. TABLE 5-1. Customary Grade 8 UNF or UNC.

Fastener Size 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1

Torque

lb-ft

2734

2025

4760

3544

7696

5671

117148

86109

167214

123-158

235296

173218

411523

303386

654846

482624

9731268

718935

TABLE 5-2. U.S. Customary - Grade 8 Metric Class 10.9

Fastener Size M6 M8 M10 M12 M14 M16 M20

Torque Nm 911 2427 4754 8395 132150 206235 403458

lb-ft 78 1820 3540 6170 97111 152173 297338

WELDING
The frame rails are heat treated and should not be welded. The high heat of welding nullifies the special heat treatment of the rails, greatly reducing the tensile strength of the frame rail. If a frame member becomes cracked from overloading, fatigue, surface damage or a collision, the only permanent repair is to replace the damaged frame member with a new part.
The following information is provided for temporary emergency repair. Prior to welding a cracked frame rail, the area should be beveled (V'd out) to allow for a better weld. To prevent spreading of the crack, a 7 to 9 mm (1/4 in. to 3/8 in.) dia. hole should be drilled at the end of the crack. Widen the crack along its full length by using two hack saw blades together. When welding steel frames use the shielded arc method. Be sure to obtain full weld penetration along the entire length of the crack.

Peterbilt Motors Company

5-4

FRAME MODIFICATIONS

PRECAUTIONS

CAUTION:

Before welding, disconnect the alternator terminals. Failure to do so could result in damage to the voltage regulator and/or alternator.

CAUTION:

To prevent damage to electrical equipment, disconnect battery cables before arc-welding on a truck, and be sure that the welding ground lead is connected to the frame. Bearings and other parts will be damaged if current must pass through them in order to complete the circuit.

WELDING PRECAUTIONS: ALL ELECTRONIC ENGINES Before welding on vehicles with electronic engines, the following precautions should be observed.
1. Disconnect all electrical connections to the vehicle batteries. 2. Disconnect all ECM, TCM and VECU connectors. 3. Do no use the ECM, TCM, VECU or engine ground stud for the ground of the welding probe. 4. Ensure that the ground connection for the welder is as close to the weld point as possible. This
ensures maximum weld current and minimum risk to damage electrical components on the vehicle. 5. Turn off key.

NOTE:

Bendix ABS and Wabco ABS: Disconnect ECU, TCM & VECU.

Peterbilt Motors Company

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SECTION 6 CAN COMMUNICATIONS
INTRODUCTION
Controller Area Network (CAN) is a serial network technology that was originally designed for the automotive industry but has also become popular in the commercial trucking industry. The CAN bus is primarily used in the embedded systems and network technology that provides fast communication among controllers up to real-time requirements, eliminating the need for the much more expensive and complex technology.
CAN is a two-wire high-speed network system, that is far superior to conventional hardwired technologies functionality and reliability. CAN implementations are more cost effective. CAN is designed for real-time requirements which can easily beat hardwire connections when it comes to short reaction times, timely error detection, quick error recovery, and error repair.
Characteristics of the Controller Area Network
· A serial networking technology for embedded solutions · Needs only two wires to communicate messages · Operates at data rates of 250K and 500K · Supports a maximum of 8 bytes per message frame · One application can support multiple message IDs · Supports message priority, i.e. the lower the message ID the higher its priority

CAN COMMUNICATIONS ACRONYM LIBRARY

Acronym Definition

CAN

Controller Area Network

J-1939 SAE CAN Communication Standard

PGN

Parameter Group Number

PTO

Power Take Off

SPN

Suspect Parameter Number

SCR

Selective Catalytic Reduction

DPF

Diesel Particulate Filter

Regen Aftertreatment Regeneration

TSC1

Torque Speed Commands

CAN Communications

SAE J1939
The Society of Automotive Engineers (SAE) Communications Subcommittee for Truck and Bus Controls has developed a family of standards concerning the design and use of devices that transmit electronic signals and control information among vehicle components. SAE J1939 and its companion documents are the accepted industry standard for the vehicle network of choice for commercial truck applications. SAE J1939 is used in the commercial vehicle area for communication in the embedded systems of the commercial vehicle.
SAE J1939 uses CAN as physical layer. It is a recommended practice that defines which and how the data is communicated between the Electronic Control Units within a vehicle network. Typical controllers are the Engine, Brake, Transmission, etc. The messages exchanged between these units can be data such as vehicle road speed, torque control message from the transmission to the engine, oil temperature, and many more.
Characteristics of J1939
· Extended CAN identifier (29 bit) · Peer-to-peer and broadcast communication · Network management · Definition of parameter groups for commercial vehicles and others · Manufacturer specific parameter groups are supported · Diagnostics features · A standard developed by the Society of Automotive Engineers · Defines communication for vehicle networks · A Higher-Layer Protocol using CAN as the physical layer · Uses unshielded twisted pair wire · Applies a maximum network length of 120 ft. · Applies a standard baud rate of 500 Kbit/sec · Supports peer-to-peer and broadcast communication · Supports message lengths up to 1785 bytes · Defines a set of Parameter Group Numbers · Supports network management
PARAMETER GROUP NUMBER
Parameter Groups contain information on parameter assignments within the 8-byte CAN data field of each message as well as repetition rate and priority. Parameters groups are, for instance, engine temperature, which includes coolant temperature, fuel temperature, oil temperature, etc. Parameter Groups and their numbers are listed in SAE J1939 and defined in SAE J1939/71, a document containing parameter group definitions plus suspect parameter numbers.

SUSPECT PARAMETER NUMBER
A Suspect Parameter Number is a number assigned by the SAE to a specific parameter within a parameter group. It describes the parameter in detail by providing the following information:
Data Length in bytes Data Type Resolution Offset Range Reference Tag (Label)
SPNs that share common characteristics are grouped into Parameter Groups, and they will be transmitted throughout the network using the Parameter Group Number.

Peterbilt Motors Company

6-2

CAN Communications

CAN MESSAGES AVAILABLE ON BODY CONNECTIONS

SPN
38 46 51 52 69 70 74
81
84 86 86 90 91 92 94 96 97 98 100 101 102 105 106 108 110 111 117 118 158 161 162 163 168 168 171 173 174 175

CAN Signal Name
Fuel Level 2 Pneumatic Supply Pressure Engine Throttle Valve 1 Position 1 Engine Intercooler Temperature Two Speed Axle Switch Parking Brake Switch Maximum Vehicle Speed Limit Aftertreatment 1 Diesel Particulate Filter Intake Pressure Wheel-Based Vehicle Speed Cruise Control Set Speed Cruise Control Set Speed Power Takeoff Oil Temperature Accelerator Pedal Position 1 Engine Percent Load At Current Speed Engine Fuel Delivery Pressure Fuel Level 1 Water In Fuel Indicator 1 Engine Oil Level Engine Oil Pressure 1 Engine Crankcase Pressure 1 Engine Intake Manifold #1 Pressure Engine Intake Manifold 1 Temperature Engine Intake Air Pressure Barometric Pressure Engine Coolant Temperature Engine Coolant Level 1 Brake Primary Pressure Brake Secondary Pressure Key Switch Battery Potential Transmission 1 Input Shaft Speed Transmission Requested Range Transmission Current Range Battery Potential / Power Input 1 Battery Potential / Power Input 1 Ambient Air Temperature Engine Exhaust Temperature Engine Fuel Temperature 1 Engine Oil Temperature 1

PGN, Message
65276, DD1 65198, AIR1 65266, LFE1 65262, ET1 65265, CCVS1 65265, CCVS1 65261, CCSS
65270, IC1
65265, CCVS1 65265, CCVS1 65265, CCVS1 65264, PTO 61443, EEC2 61443, EEC2 65263, EFL/P1 65276, DD1 65279, OI 65263, EFLP1 65263, EFL/P1 65263, EFL/P1 65270, IC1 65270, IC1 65270, IC1 65269, AMB 65262, ET1 65263, EFL/P1 65274, B1 65274, B1 65271, VEP1 61442, ETC1 61445, ETC2 61445, ETC2 65271, VEP1 65271, VEP1 65269, AMB 65270, IC1 65262, ET1 65262, ET1

Tx SA
39 48 00 00 00 39 39
00
00 00 39 7, 33 00 00 00 39 00 00 00 00 00 00 00 00 00 00 39 39 39 03 03 03 39 00 00 00 00 00

Rx SA
Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast
Broadcast
Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast

Peterbilt Motors Company

CAN Bus
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN
KCAN,SCAN,BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN,BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
6-3

CAN Communications

177 Transmission Oil Temperature 1 182 Engine Trip Fuel 183 Engine Fuel Rate 184 Engine Instantaneous Fuel Economy 185 Engine Average Fuel Economy 187 Power Takeoff Set Speed 187 Power Take Off Set Speed 190 Engine Speed 191 Transmission 1 Output Shaft Speed 235 Engine Total Idle Hours 236 Engine Total Idle Fuel Used 237 Vehicle Identification Number 244 Trip Distance 245 Total Vehicle Distance 247 Engine Total Hours of Operation 248 Total Power Takeoff Hours 249 Engine Total Revolutions 250 Engine Total Fuel Used 512 Driver's Demand Engine - Percent Torque 513 Actual Engine - Percent Torque
518 Engine Requested Torque/Torque Limit
518 Engine Requested Torque/Torque Limit 523 Transmission Current Gear 524 Transmission Selected Gear
525 Transmission Requested Gear
525 Trans Requested Gear 526 Transmission Actual Gear Ratio 527 Cruise Control States 527 Cruise Control States 558 Accelerator Pedal1 Low Idle Switch 559 Accelerator Pedal Kick down Switch 560 Transmission Driveline Engaged 561 ASR Engine Control Active 562 ASR Brake Control Active 563 Anti-Lock Braking (ABS) Active 573 Transmission Torque Converter Lockup
Engaged 574 Transmission Shift In Process 590 Engine Idle Shutdown Timer State
Peterbilt Motors Company

65272, TRF1 65257, LFC1 65266, LFE1 65266, LFE1 65266, LFE1 65264, PTO 65264, PTO 61444, EEC1 61442, ETC1 65244, IO 65244, IO 65260, VI 65248, VD 65248, VD 65253, HOURS 65255, VH 65253, HOURS 65257, LFC1 61444, EEC1 61444, EEC1
0, TSC1
0, TSC1
61445, ETC2 61445, ETC2
256, TC1
256, TC1
61445, ETC2 65265, CCVS1 65265, CCVS1 EEC2, 61443 61443, EEC2 61442, ETC1 61441, EBC1 61441, EBC1 61441, EBC1
61442, ETC1
61442, ETC1 65252, SHUTDN

03 00 00 00 23 39 00 00 03 00 00 00 00 00 00 00 00 00 00 00
39
7, 33
03 03
03
7, 33
03 39 00 00 00 03 39 39 39
03
03 00

Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast 249 (DA specific) 00 (DA specific) Broadcast Broadcast 255 (DA specific) 03 (DA specific) Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast
Broadcast
Broadcast Broadcast

6
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN
6-4

CAN Communications

590 Engine Idle Shutdown Timer State

65252, SHUTDN

591 Engine Idle Shutdown Timer Function

65252, SHUTDN

591 Engine Idle Shutdown Timer Function

65252, SHUTDN

592 Engine Idle Shutdown Timer Override

65252, SHUTDN

593 Engine Idle Shutdown has Shutdown Engine 65252, SHUTDN

594 Engine Idle Shutdown Driver Alert Mode

65252, SHUTDN

595 Cruise Control Active

65265, CCVS1

595 Cruise Control Active

65265, CCVS1

596 Cruise Control Enable Switch

65265, CCVS1

597 Brake Switch

65265, CCVS1

598 Clutch Switch

65265, CCVS1

599 Cruise Control Set Switch

65265, CCVS1

600 Cruise Control Coast (Decelerate) Switch

65265, CCVS1

601 Cruise Control Resume Switch

65265, CCVS1

602 Cruise Control Accelerate Switch

65265, CCVS1

606 Engine Momentary Overspeed Enable

61442, ETC1

607 Progressive Shift Disable

61442, ETC1

684 Requested % Clutch Slip

256, TC1

695 Engine Override Control Mode

0, TSC1

696 Engine Requested Speed Control Conditions 0, TSC1

897 Override Control Mode Priority

0, TSC1

898 Engine Requested Speed/Speed Limit 899 Engine Torque Mode 917 Total Vehicle Distance (High Resolution) 969 Remote Accelerator Enable Switch

0, TSC1
61444, EEC1 65217, VDHR 61441, EBC1

970 Engine Auxiliary Shutdown Switch 974 Remote Accelerator Pedal Position 974 Remote Accelerator Pedal Position 975 Engine Fan 1 Estimated Percent Speed 976 PTO Governor State 976 PTO Governor State 976 PTO Governor State 977 Fan Drive State 979 Engine Remote PTO Governor
Preprogrammed Speed Control Switch 979 Engine Remote PTO Governor
Preprogrammed Speed Control Switch 980 Engine PTO Governor Enable Switch

61441, EBC1 61443, EEC2 61443, EEC2 65213, FD1 65265, CCVS1 65265, CCVS1 65265, CCVS1 65213, FD1
65264, PTO
65264, PTO
65264, PTO

Peterbilt Motors Company

39 00 39 00 00 00 39 00 39 39 39 39 39 39 39 03 03
7, 33
7, 33
7, 33
7, 33
7, 33
00 39 00 7, 33, 160 7, 33 00 00 39 00 7, 33 00
7, 33

Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast 03 (DA specific) 00 (DA specific) 00 (DA specific) 00 (DA specific) 00 (DA specific) Broadcast Broadcast Broadcast
Broadcast
Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast
Broadcast

00 7, 33

Broadcast Broadcast

6
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
6-5

CAN Communications

980 982 984 985 1028 1040 1081 1087 1087 1087 1088 1090 1107 1108 1109
1110 1111 1172
1184 1214 1215 1216 1437 1482
1483
1487 1639 1675 1706
1761 1807 1854
1856 2347

Engine PTO Governor Enable Switch Engine PTO Governor Resume Switch Engine PTO Governor Set Switch A/C High Pressure Fan Switch Total Engine PTO Governor Fuel Used Total Fuel Used (Gaseous) Engine Wait to Start Lamp Service Brake Circuit 1 Air Pressure Service Brake Circuit1 Air Pressure Service Brake Circuit1 Air Pressure Service Brake Circuit 2 Air Pressure Air Suspension Supply Pressure 1 Engine Protection System Timer State Engine Protection System Timer Override Engine Protection System Approaching Shutdown Engine Protection System Approaching Shutdown Engine Protection System Configuration Engine Turbocharger1 Compressor Intake Temperature Engine Turbocharger1 Turbine Outlet Temperature Suspect Parameter Number Failure Mode Identifier Occurrence Count Road Speed Limit Status Source Address of Controlling Device for Transmission Control Source Address of Controlling Device for Engine Control
Illumination Brightness Percent Fan Speed Engine Starter Mode SPN Conversion Method Aftertreatment 1 Diesel Exhaust Fluid Tank Volume Steering Wheel Angle
TransMode3
Seat Belt Switch High Beam Head Light Command

65264, PTO 65264, PTO 65264, PTO 65252, SHUTDN 65203, LFI1 65199, GFC 65252, SHUTDN 65198, AIR1 65198, AIR1 65198, AIR1 65198, AIR1 65198, AIR1 65252, SHUTDN 65252, SHUTDN 65252, SHUTDN
65252, SHUTDN 65252, SHUTDN 65178, TCI2
TCI5, 65175 65226, DM1 65226, DM1 65226, DM1 61443, EEC2 61442, ETC1
61444, EEC1
53248, CL 65213, FD1 61444, EEC1 65226, DM1
65110, AT1T1I1 61449, VDC2 256, TC1
57344, CM1 65089, LCMD

00 7, 33 7, 33 00 00 00 00 39 11 48 39 23 00 00
00

Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast
Broadcast

00 Broadcast 00 Broadcast 00 Broadcast

00 Broadcast
39 Broadcast 39 Broadcast 39 Broadcast 00 Broadcast
03 Broadcast

00 Broadcast

74 (DA specific)

00 Broadcast

39 Broadcast

00 Broadcast

11, 62 7, 33 39 39

Broadcast 03 (DA specific) 255 (DA specific)
Broadcast

Peterbilt Motors Company

6
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN KCAN, SCAN, BCAN
6-6

CAN Communications

2347 2349 2349 2367 2367 2369 2369 2371 2371 2373 2373 2385 2385 2387 2387 2391 2391 2403 2403 2432 2538 2540
2540
2609
2641 2863 2873 2873
2875 2876 2979

High Beam Head Light Command Low Beam Head Light Command
Low Beam Head Light Command Left Turn Signal Lights Command
Left Turn Signal Lights Command Right Turn Signal Lights Command
Right Turn Signal Lights Command Left Stop Light Command
Left Stop Light Command Right Stop Light Command
Right Stop Light Command Rotating Beacon Light Command
Rotating Beacon Light Command Tractor Front Fog Lights Command
Tractor Front Fog Lights Command Back Up Light and Alarm Horn Command
Back Up Light and Alarm Horn Command Running Light Command
Running Light Command Engine Demand Percent Torque TransMode3Indicator
Parameter Group Number (RQST)
Parameter Group Number (RQST) Cab A/C Refrigerant Compressor Outlet Pressure
Horn Switch Front Operator Wiper Switch Work Light Switch
Work Light Switch
Hazard Light Switch Turn Signal Switch Vehicle Acceleration Rate Limit Status

65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 65089, LCMD 61444, EEC1 65098, ETC7 59904, RQST
59904, RQST
64993, CACI
64980, CM3 64973, OWW 64972, OEL 64972, OEL
64972, OEL 64972, OEL 61443, EEC2

Peterbilt Motors Company

7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 39 7, 33, 160 00
03
251
7, 33, 160
25
7, 33, 160 39
39 7, 33, 160 7, 33, 160
39
39

Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast 255 (DA specific) 00 (DA specific) Broadcast
Broadcast Broadcast Broadcast Broadcast
Broadcast Broadcast Broadcast

6
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
KCAN, SCAN, BCAN KCAN, SCAN KCAN, SCAN, BCAN

6-7

CAN Communications

2979 3026 3027 3028 3031
3246 3349 3350 3357
3363
3447 3462 3462 3543 3606 3607
3609
3610 3673 3695 3695 3696 3696 3696 3697 3698
3700
3701

Vehicle Acceleration Rate Limit Status Transmission Oil Level 1 Measurement Status Transmission Oil Level 1 High / Low Transmission Oil Level 1 Countdown Timer Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature 1 Aftertreatment 1 Diesel Particulate Filter Outlet Temperature
TSC1 Transmission Rate
TSC1 Control Purpose Actual Maximum Available Engine - Percent Torque Aftertreatment 1 Diesel Exhaust Fluid Tank Heater Remote PTO Governor Preprogrammed Speed Control Switch #2 Engagement Status
Engagement Status Engine Operating State Engine Controlled Shutdown Request Engine Emergency (Immediate) Shutdown Indication Aftertreatment 1 Diesel Particulate Filter Intake Pressure Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Engine Throttle Valve2 Position
Aftertreatment Regeneration Inhibit Switch
Aftertreatment Regeneration Inhibit Switch
Aftertreatment Regeneration Force Switch
Aftertreatment Regeneration Force Switch
Force Regen Diesel Particulate Filter Lamp Command Exhaust System High Temperature Lamp Command Aftertreatment Diesel Particulate Filter Active Regeneration Status Aftertreatment Diesel Particulate Filter Status

61443, EEC2 65272, TRF1 65272, TRF1 65272, TRF1 65110, AT1T1I1
64947, AT1OG2 0, TSC1 0, TSC1 61443, EEC2
65110, AT1T1I1
65264, PTO 64932, PTODE 64932, PTODE 64914, EOI 64914, EOI 64914, EOI
64908, AT1GP
64908, AT1GP 65266, LFE1 57344, CM1 57344, CM1 57344, CM1 57344, CM1 57344, CM1 64892, DPFC1 64892, DPFC1
64892, DPFC1
64892, DPFC1

Peterbilt Motors Company

00 Broadcast 03 Broadcast 03 Broadcast 03 Broadcast 00 Broadcast

00 7, 33 7, 33 00

Broadcast
00 (DA specific) 00 (DA specific)
Broadcast

00 Broadcast

7, 33 7, 33 7, 33 00 00 00
00
00 00 7, 33, 160 39 7, 33, 160 00
39 00 00

Broadcast
Broadcast 03 (DA specific) Broadcast Broadcast
Broadcast
Broadcast (255)
Broadcast
Broadcast 255 (DA specific) 255 (DA specific) 255 (DA specific) 255 (DA specific) 255 (DA specific) Broadcast
Broadcast

00 Broadcast

6
KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN KCAN, SCAN, BCAN
6-8

CAN Communications

3702 3703 3704 3705 3706 3707 3708
3709
3710 3711 3712 3713 3716
3717
3718 3719 3721 3948 4154 4175 4191 4206 4207 4765

Diesel Particulate Filter Active Regeneration Inhibited Status Diesel Particulate Filter Active Regeneration Inhibited Due to Inhibit Switch Diesel Particulate Filter Active Regeneration Inhibited Due to Clutch Disengaged Diesel Particulate Filter Active Regeneration Inhibited Due to Service Brake Active Diesel Particulate Filter Active Regeneration Inhibited Due to PTO Active Diesel Particulate Filter Active Regeneration Inhibited Due to Accelerator Pedal Off Idle Diesel Particulate Filter Active Regeneration Inhibited Due to Out of Neutral Diesel Particulate Filter Active Regeneration Inhibited Due to Vehicle Speed Above Allowed Speed Diesel Particulate Filter Active Regeneration Inhibited Due to Parking Brake Not Set Diesel Particulate Filter Active Regeneration Inhibited Due to Low Exhaust Temperature Diesel Particulate Filter Active Regeneration Inhibited Due to System Fault Active Diesel Particulate Filter Active Regeneration Inhibited Due to System Timeout Diesel Particulate Filter Active Regeneration Inhibited Due to Engine Not Warmed Up Diesel Particulate Filter Active Regeneration Inhibited Due to Vehicle Speed Below Allowed Speed Diesel Particulate Filter Automatic Active Regeneration Initiation Configuration Aftertreatment 1 Diesel Particulate Filter Soot Load Percent Aftertreatment 1 Diesel Particulate Filter Time Since Last Active Regeneration
At least one PTO engaged Actual Engine - Percent Torque (Fractional) Diesel Particulate Filter Active Regeneration Forced Status
Engine Requested Torque (Fractional)
Message Counter
Message Checksum Aftertreatment 1 Diesel Oxidation Catalyst Intake Temperature

64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1
64892, DPFC1
64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1 64892, DPFC1
64892, DPFC1
64892, DPFC1 64891, AT1S1 64891, AT1S1 64932, PTODE 61444, EEC1 64892, DPFC1 0, TSC1 0, TSC1 0, TSC1 64800, A1DOC1

Peterbilt Motors Company

00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast

00 Broadcast

00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast

00 Broadcast

00 39 00 00 7, 33 7, 33 7, 33 00

Broadcast
Broadcast Broadcast
Broadcast
00 (DA specific) 00 (DA specific) 00 (DA specific)
Broadcast

CAN Communications

4816 5078 5079 5082 5083 5084 5086 5087 5088 5245
5246 5398 5399 5400 5466
5676 5825 8484 12308 12308 12308 12964

Transmission Torque Converter Lockup Transition in Process Engine Amber Warning Lamp Command Engine Red Stop Lamp Command Engine Oil Pressure Low Lamp Command Engine Coolant Temperature High Lamp Command Engine Coolant Level Low Lamp Command Engine Air Filter Restriction Lamp Command Vehicle Battery Voltage Low Lamp Command Vehicle Fuel Level Low Lamp Command Aftertreatment Diesel Exhaust Fluid Tank Low Level Indicator Aftertreatment SCR Operator Inducement Severity Estimated Pumping - Percent Torque DPF Thermal Management Active SCR Thermal Management Active Aftertreatment 1 Diesel Particulate Filter Soot Load Regeneration Threshold Forward Collision Advanced Emergency Braking System State Driver Warning System Indicator Status Demanded Brake Application Pressure Headlamp Emergency Flash Switch Headlamp Emergency Flash Switch Headlamp Emergency Flash Switch Auxiliary Lamp Group Switch

61442, ETC1 64775, DLCC1 64775, DLCC1 64775, DLCC1 64775, DLCC1 64775, DLCC1 64775, DLCC1 64774, DLCC2 64774, DLCC2 65110, AT1T1I1
65110, AT1T1I1 61443, EEC2 61443, EEC2 61443, EEC2 64891, AT1S1
61487, AEBS1 65279, OI 61712, B2 64972, OEL 64972, OEL 64972, OEL 64972, OEL

12964
13105 13108 13109 13116 13132

Auxiliary Lamp Group Switch Engine Oil Temperature High Lamp Command Primary Air Pressure Low Lamp Command Secondary Air Pressure Low Lamp Command Transmission Oil Temperature High Lamp Command Air Suspension Supply Pressure 2

64872, OEL
64775, DLCC1 64774, DLCC2 64774, DLCC2 64775, DLCC1 64195, AIR3

03 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 00 Broadcast 23 Broadcast 23 Broadcast 23 Broadcast 00 Broadcast

00 Broadcast
00 Broadcast 00 Broadcast 00 Broadcast
00 Broadcast

42
00 39 7, 33 7, 33 7, 33 39 7, 33, 160
23
23 23
23
23

Broadcast
Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast Broadcast
Broadcast
Broadcast Broadcast
Broadcast
Broadcast

Peterbilt Motors Company

6-10

SECTION 7 ELECTRICAL

INTRODUCTION
This section is written to provide information to the body builder when installing equipment into vehicles built with multiplexed instrumentation. The technology presented by VECU level instrumentation integrates J-1939 CAN data communications between controllers and equipment on the vehicle. This section is intended to address how to work in aftermarket equipment while still maintaining full functionality of the OEM vehicle.
These topics apply to 520 chassis built with a Vehicle Electronic Control Unit (VECU). The electrical architecture for these trucks will be named VMUX which replaces NAMUX2. This system integrates a parallel control unit to manage outbound messages via a faster baud rate 500kbps and FCAN signals for the chassis module(s). Since the F-CAN has moved to the VECU, the VCAN is divided into VCAN1 and VCAN2. The second CAN is dedicated to OBD communication.
The most important advancement of electrical instrumentation is the implementation of the VECU controller. While it is still possible to wire completely outside of the VECU system, utilizing the VECU functions will make a cleaner installation and will maintain OEM functionality. VECU expands controls to air operated devices by receiving input from dash switches, remote (aftermarket) switches, sensors mounted to the aftermarket equipment and other vehicle parameters (engine speed, transmission status etc.) With the proper programming, the VECU will then process the inputs and will create a J1939 Data instruction which is communicated to another controller outside the cab called the Chassis Module. This chassis module receives the instruction and communicates the information to the air solenoid bank. Then 12V power will open the solenoid and supply air pressure the specified air circuit. The chassis module can also supply voltage to other systems on the chassis.
ELECTRICAL ACRONYM LIBRARY

Acronym CAN DTC ECM ECU EOA EOH J-1939 LIN MSB MSM MUX OBD OEM PCC PDC PGN PTO RP1226 SPN TCM VECU

Definition Controller Area Network Diagnostics Trouble Code Engine Control Module Electrical Control Unit Electric Over Air Electric Over Hydraulic SAE CAN Communication Standard Local Interconnect Network Master Solenoid Bank Master Switch Module Multiplex Switch On Board Diagnostics Original Equipment Manufacture Predictive Cruise Control Power Distribution Center Parameter Group Number Power Take Off TMS Messaging Standard Suspect Parameter Number Transmission Control Module Vehicle Electrical Control Unit

ELECTRICAL

ELECTRICAL WIRING CIRCUIT CODES

The wire system uses 10 different colors and one striped wire color. Each wire has a minimum of seven characters, with the first three characters as the wire color. The remaining four characters are related to the wire services. The colors determine the circuits function as follows:
ELECTRICAL WIRE CIRCUIT CODE TABLES

Number XXX0000 through XXX0999 XXX1000 through XXX1999 XXX2000 through XXX2999 XXX3000 through XXX3999 XXX4000 through XXX4999 XXX5000 through XXX5999 XXX6000 through XXX6999 XXX7000 through XXX7999 XXX8000 through XXX8999 XXX9000 through XXX9999

Category General Power Supply Lighting Powertrain Instrumentation Safety systems Convenience, Security HVAC Undefined Trailer/Body Connections

Peterbilt Motors Company

7-2

ELECTRICAL

MULTIPLEX SYSTEM

The VECU electrical architecture uses a multiplexing system. Multiplexing can be defined as the process of sending multiple digital signals on the same shared medium at the same time. These signals are introduced into the multiplexing system through data connection points which are defined by J1939 backbone.

CAN BUS SYSTEM OVERVIEW

Cab mounted
New/ Modified w.r.t. 2021 MD VMUX

Chassis mounted
Future

Powe rtr ain mounted

Off-Board

Investigation

Op tional

R Resistor

GPS

Connector

DC Daisy Chain

3G/4G Wireless Data
B lue too th

USB WiFi

A-CAN
250 kb/s

E-CAN
250 kb/s
R

RP170 Powe rtr ain

Remote Display /
Body C ontr olle r/ PTO (CID) (250 kb/s)

Peop le Ne t System

Remote Diagnostics

S-CAN
500 kb/s SC
Radio Head

R R
RP1226 Cab

MCS3
Secondary MCS3

V-LIN1 V-LIN2

Remote Display /
Body Controller / PTO (CID) / Telematics / ELD (CID) (250 kb/s)

Remote Display /
Body Controller / PTO (CID) / Telematics / ELD (CID) (500 kb/s)

Telematics Pre-wire

V-CAN 1
500 kb/s

Retarder

Engine

DWIM

K-CAN
250 kb/s

Speedo

R R
VECU 2 (CAN Gateway)

V-CAN 2 (OBD)
500 kb/s

T-CAN
250 kb/s

Allison 3K/4K R TCM

Cluster

Secondary Cluster

G-LIN
Op tional Gauges

C-CAN
500 kb/s

Allison R Shifter Cab
Secondary Allison
Shifter Cab

ACC RADAR

Chassis Module Secondary
DC

F-CAN
500 kb/s

Solenoid Bank 1

Bendix ABS/ATC

LDWS

Brake Wear ECU

Master Switch Modu le

S-LIN1 S-LIN2

R
MUX Switches
MUX Switches

R
D-CAN
500 kb/s

Ethernet
100 Mb/s

OBD Connector

Ethernet Connector

R
Chassis Module Primary
(CAN Gateway) R

B-CAN
500 kb/s

Side Object D ete ct io n
Left

R
Side Object D ete ct io n
R igh t

Remote Display /
Body C ontr olle r/ PTO (CID) (500 kb/s)

OBD Sca ntoo l

Service Tool/CHET

PACCAR PROPRIETARY FOR INTERNAL USE ONLY

A DIV IS ION OF
THIS DRA WING A ND THE INF ORM AT ION CONTA INE D HERE IN I S P ROP RIE TARY TO P ACCAR I NC. A ND SHALL NOT B E REP RODUCE D, COPI ED , OR DI SCLOS ED I N WHOLE OR I N PA RT, OR US ED F OR MA NUFACTURE OR F OR ANY OT HE R P URP OSE WIT HO UT THE WRIT TEN PE RM IS SI ON OF PA CCAR I NC.

TITLE
VEHICLE NETWORK ARCHITECTURE 520 VMUX

AUTHOR
T. Lafferty

DRAWING
Q98-5002E0021-001

A REV

CAN BUS SPEEDS AND CIRCUIT DESIGNATION

J1939-14 (500KBPS): B-CAN 0813 Body Builder C-CAN 0821 Cab D-CAN 0822 Diagnostics F-CAN 0819 Frame G-CAN 0825 Safety Systems S-CAN 0827 Infotainment and Mobile Gateway V-CAN1 0812 Vehicle1 V-CAN2 0823 Vehicle2

J1939-15 (250KBPS): T-CAN 0828 Transmission K-CAN 0829 Customer Installed Devices

Peterbilt Motors Company

7-3

ELECTRICAL

ELECTRICAL COMPONENT OVERVIEW

Peterbilt Motors Company

7-4

ELECTRICAL

IN CAB CAN BASED MESSAGING CONNECTOR
RP1226 CONNECTOR
The RP1226 connectors are located under the body builder panel (near the PDC) and behind the driver kick panel (LH for LH and dual drive, RH for RH drive). The RP1226 connector can be used for after-market telematics, ELD, body controls, and PTO controls. There will be multiple bus speeds available, K-CAN for 250kbps and S-CAN for 500 kbps. The RP1226 provides defined messages and major telematics supplier data for customer use.

Description

PROTECTED POWER

J1939 S-CAN (+)

J1939 K-CAN (+)

IGNITION POWER

GROUND

J1939 S-CAN (-)

11 J1939 K-CAN (-)

14 CONSTANT BATTERY

Peterbilt Motors Company

7-5

ELECTRICAL

RP1226 CONNECTOR LOCATIONS

RP1226 Connector Locations LH location for LH and dual drive cabs, RH location for RH drive cab

Peterbilt Motors Company

7-6

ELECTRICAL

ELECTRIC ENGAGED EQUIPMENT

RP170 CONNECTOR
There are three RP170 connectors total. The 8-pin and 31-pin are located inside the cab under the body builder panel. The 14-pin connector is located inside the left hand frame rail.

RP170 CONNECTOR LOCATIONS 8 PIN & 31 PIN

RP170 8-Pin & 31-Pin Connectors

Peterbilt Motors Company

7-7

ELECTRICAL

RP170 CONNECTOR LOCATIONS 14 PIN

RP170 14-Pin Connector

Peterbilt Motors Company

7-8

ELECTRICAL

8-PIN CONNECTOR

DESCRIPTION

A BATTERY (20A)

B IGNITION (20A)

C IGNITION (20A)

D CONSTANT BATTERY (15A)

E IGN THRU REV CIRCUIT (25A)

F GROUND

G GROUND

H GROUND

Peterbilt Motors Company

7-9

ELECTRICAL

31-PIN CONNECTOR

DESCRIPTION

FROM ENGINE

TACH (DIESEL) 1 DIAG TEST SWITCH (NG) 2 ABS RETARDER 3 THROTTLE LIMIT 4 THROTTLE ADVANCE 5 K-CAN HIGH (250K) 6 K-CAN LOW (250K)
THROTTLE INTERLOCK (MX) 7 TORQUE LIMIT (CUMMINS)

APPLICATION SPEED LIMITER (MX) 8 BLANK (CUMMINS)

GROUND (MX) 9 ECM COMMON (CUMMINS) 10 REMOTE PTO ENABLE 11 REMOTE PTO SET 12 REMOTE PTO RESUME

13 PARK BRAKE APPLIED

14 BLANK

DESCRIPTION

FROM TRANSMISSION

15 TCM IGNITION POWER (12V) 16 ROAD SPEED SIGNAL 17 TCM SIGNAL RETURN 18 AT123 INPUT 19 PTO CONTROLS INPUT 20 PUMP MODE ENABLED INPUT
21 AUTO NEUTRAL INPUT SHIFT SELECTOR TRANSMISSION
22 INPUT

23 SERVICE BRAKE STATUS INPUT 24 AUTO NEUTRAL INPUT 25 PTO DRIVE INTERFACE OUTPUT 26 NEUTRAL INDICATOR OUTPUT

27 OUTPUT SPEED INDICATOR OUTPUT
SUMP/RETARDER TEMP INDICATOR 28 OUTPUT 29 NEUTRAL START SIGNAL 30 IGNITION (10A) 31 DUAL STEER RH ACTIVE SIGNAL

Peterbilt Motors Company

7-10

ELECTRICAL

14-PIN CONNECTOR

DESCRIPTION

1 GROUND

2 BACKUP LIGHTS

3 LH TURN/STOP

4 RH TURN/STOP

5 TAIL LAMPS

6 CLEARANCE LAMPS

7 STOP LAMPS

8 BLANK

9 BLANK

10 BLANK

11 BLANK

12 BLANK

13 LH MARKER TURN LAMPS

14 RH MARKER TURN LAMPS

Peterbilt Motors Company

7-11

ELECTRICAL

ENGINE HARNESS 12 PIN CONNECTOR

PACCAR MX Engines
Chassis must be ordered with the appropriate option to have a 12 pin connector on the chassis harness. All signals will feed into the Chassis Modules.
Wiring Function Description: Connect pin 5 and pin 6 to pin 8 to activate PTO Mode Control (PMC) and Enable PTO Speed Control (PSC).
· "Bump up" Engine Speed: Connect pins 2 to pin 8 momentarily · "Accelerate" Engine Speed: Connect pins 2 to pin 8 until desired RPM is reached then disconnect · "Bump down" Engine Speed: Connect pin 1 to pin 8 momentarily · "Decelerate" Engine Speed: Connect pins 1 to pin 8 until desired RPM is reached then disconnect · "0-5v Variable Voltage Remote Throttle": See PTO section

Peterbilt Motors Company

7-12

ELECTRICAL
Pin 11-12V 10A Body Ignition Wire #: ORN1220-86 Fuse: CHASSIS PDC F25 Amperage: 10A
Pin 10-5V supply for variable voltage throttle Wire #: VIO3144-2 Source: Chassis Module Primary
Pin 9-MX Application Speed Limiter Wire #: GRA3100-3 Signal: DUAL ACTIVATION Destination: Standard Chassis Module
Pin: 8-Vehicle Ground Wire #: WHT3511-2 Notes: Recommended source for all ground signals on this connector
Pin 7-12V 10A Body Ignition Wire #: ORN1220-30 Fuse: CHASSIS PDC F25 Amperage: 10A

7
Pin 1-Resume/decel Wire #: GRA3513-5 Signal: LOW/GROUND
Pin 2-Set/accel Wire #: GRA3512-5 Signal: LOW/GROUND
Pin 3-Return for variable voltage throttle Wire #: GRN3144-2
Pin 4-Signal for variable voltage throttle Wire #: BLU3144-2 Signal: 0-5V Note: See PTO Section for detail on VVRT
Pin 5-PTO Engaged Wire #: GRA3511-19 Signal: DUAL ACTIVATION Note: Same circuit as P201 connector, pin 2
Pin 6-REMOTE PTO ENABLE Wire #: GRA3511-63 Signal: LOW/GROUND

Peterbilt Motors Company

PACCAR Recommended PTO Wiring

7-13

ELECTRICAL

Cummins Engines 12 Pin Connector
Chassis must be ordered with the appropriate option to have a 12 pin connector on the engine harness. The Body IGN signal was moved off the engine harness connector, so the Chassis Harness will include the PTO layer to insert the Body IGN signal back into the 12-way connector. Signals that feed directly to the engine ECM typically will be active low signals. Connect pins 3 and 5 for simple PTO ON/OFF signal. For Remote throttle bump, you must connect pins 3 & 6. Having a momentary switch to signal ground on pins 2 and 1 will then increase/decrease engine speed. Engine speed will depend on how engine is programmed. Unless otherwise specified, engine is set by default for incremental speed increase. Full remote throttle control can be achieved with a twisted triple to pin 4, 10, and 11.

Description

1 INPUT FOR REMOTE PTO RESUME (Active Low)

2 INPUT FOR REMOTE PTO SET (Active Low)

3 SWITCH RETURN FOR CUMMINS ENGINE

4 INPUT FOR REMOTE THROTTLE SENSOR CIRCUIT (TWISTED TRIPLE)

5 PTO ENGAGED SIGNAL (LOW = ENGAGED)

6 CRUISE ON/OFF (Active Low)

7 +12V 10A BODY IGN CHASSIS PDC F25

8 VEHICLE GROUND

9 TORQUE LIMIT INPUT (Active Low)

10 PWR SUPPLY +5V (TWISTED TRIPLE)

11 ANALOG RETURN (TWISTED TRIPLE)

12 REMOTE ACCELERATOR ENABLE (Active Low)

Peterbilt Motors Company

7-14

ELECTRICAL

ENGINE HARNESS CONNECTION LOCATION

MX11 Connection location

Peterbilt Motors Company

7-15

ELECTRICAL

L9N Connection location

Peterbilt Motors Company

ISX12N Connection location

7-16

ELECTRICAL

ENGINE HARNESS 8 PIN CONNECTOR
PACCAR MX Engines
Optional 8-pin PTO connector offers advanced PTO features, available only with MX engines. Option must be spec'd when the chassis is ordered. 8-pin connector is located BOC in RH frame rail.

Pin Description 1 12V IGNITION SIGNAL 2 PTO INTERLOCK INPUT (Active Low) 3 REMOTE PTO PRESET 3 (Active High) 4 REMOTE PTO PRESET 2 (Active High) 5 REMOTE PTO PRESET 1 (Active High) 6 REMOTE PTO PRESET INCREMENT + (Active High) 7 REMOTE PTO PRESET DECREMENT - (Active High) 8 VEHICLE GROUND

Peterbilt Motors Company

7-17

ELECTRICAL

POWER DISTRIBUTION CENTER

CAB LOAD CENTER

Peterbilt Motors Company

7-18

ELECTRICAL

CHASSIS PDC

Chassis PDC Location on Stanchion BOC

Peterbilt Motors Company

7-19

ELECTRICAL

CHASSIS MODULE
Chassis modules are replacing the legacy NAMUX2. Chassis modules are slave I/O drivers controlled by the VECU. Chassis modules have expanded functionality and option platform growth in comparison to the previous chassis node. There will be two chassis modules with one standard primary chassis module on all trucks and a secondary for optional content. The primary and secondary chassis modules will be mounted behind the cab on the stanchion. Chassis modules have built-in protections to prevent internal damage, are capable of detecting faults and storing DTC's. Chassis modules can also be diagnosed through the DAVIE service tool.

CHASSIS MODULE LOCATIONS

Chassis Modules Located on Stanchion BOC

Peterbilt Motors Company

7-20

ELECTRICAL

CHASSIS MODULE FUNCTION DESIGNATIONS
PRIMARY CHASSIS MODULE
· Exterior Lighting: Headlamps, Park/Tail, Turn, Brake, DRL, Fog Lights, Reverse etc. · Axle Temperature Sensor Inputs Front Rear and Rear · Kingpin Release Solenoid Control · Primary Fuel Level Sensors · Lift Axle Air Solenoid Controls 1st, 2nd · Primary Transmission Neutral Position Switch · Remote PTO/Throttle Control Inputs · F-CAN Multiplexed EOA Solenoid Bank Control · Main Transmission Oil Temp

SECONDARY CHASSIS MODULE
· Axle Temperature Gauges Center Rear · Lift Axle Air Solenoid Controls 3rd , Tag · Tag Axle Lockout

Peterbilt Motors Company

7-21

ELECTRICAL

FUSE GROUPS PRIMARY CHASSIS MODULE

Fuse Group
F1 F2 F3 F4 F5 F6 F7

Function
Electric Over Air Solenoid Kingpin Release Main Beam (aka High Beam) - LH Tractor Direction Indication and Hazard Lights - RH Rear (Brake Lamps Also) Front Tractor Position lights (Park Lamps) Tractor Direction Indication Hazard Side Turn Indicator LH Front Dipped Beam (aka Low Beam) - LH Lift Axle #2 Solenoid Tractor Direction Indication Hazard Side Turn Indicator RH Front Dipped Beam (aka Low Beam) - RH Main Beam (aka High Beam) - RH Fog/Driving Lights (Front) 1st Set Reverse Warning (aka Backup Alarm) (Rear) Direction Indication and Hazard Lights - LH Trailer Rear Tractor Position lights (Park Lamps) Reverse Lamps Tractor Direction Indication and Hazard Lights LH Rear (Brake Lamps Also) Lift Axle #1 Solenoid (Rear) Direction Indication and Hazard Lights - RH Trailer

SECONDARY CHASSIS MODULE

Fuse Group
F2 F4 F5

Tag Axle Lockout Lift Axle #3 Solenoid Lift Axle #4 (Tag) Solenoid

Function

Peterbilt Motors Company

7-22

ELECTRICAL

VECU

Fuse Group
G1
G2
G3 G4

Function
Starter Interrupt / Start Enable Relay Control Cab Dome Lamp Trailer Marker/Clearance Lamps Recirculating Header Fan - Low Speed Trailer Hotline Relay Allison MTD PTO Controls - PTO 1 Spot Lamp Work Lights (Flood Lamps) 1 Beacon/Strobe Trailer Brake Lamps Trailer/Cab Park Lamps Recirculating Header Fan - High Speed Right Hand Steer Cab Marker/Clearance Lamps Relay Output Washer Pump Control Windshield Wiper Control Dash PWM Backlighting Dash Illumination 2

Peterbilt Motors Company

7-23

ELECTRICAL

ELECTRIC OVER AIR SOLENOIDS
Air solenoids are devices that translate the electrical signal into physical functions that controls the air pressure in various circuits. The air solenoids are mounted to a bracket outside the cab. The solenoids are designed to stack on each other so that they share a common air supply which reduces the amount of air lines on the vehicle.
The aftermarket installer/final vehicle manufacturer needs to decide what type of valve to install and ensure that the documentation to the operator provides them with enough understanding of how the customized switches work.

SOLENOID BANK DIAGRAM

Peterbilt Motors Company

7-24

ELECTRICAL

SOLENOID OVERVIEW LAYOUT

Peterbilt Motors Company

7-25

ELECTRICAL

MUX SOLENOID BANK FRAME MOUNTING LOCATION

Inside right hand rail between 1st and 2nd crossmember
MUX SOLENOID BANK CROSSMEMBER MOUNTING LOCATION

*Mounting location is determined by engineering and the configuration of the vehicle Peterbilt Motors Company

7-26

ELECTRICAL

SWITCHES SWITCH OVERVIEW LAYOUT

Multiplexing = shorter wire bundles, improved diagnostics, and greater driver feedback. Safety critical switches use hybrid switch with hardwire for redundancy. The switches are less expensive with fewer wires behind the dash and on chassis. The switches are self-diagnosable to improve troubleshooting with DAVIE. Master Switch Module (MSM) LIN Communication to/from Switches CAN Communication to/from VECU
SPARE SWITCHES

Spare switches offer customers and body builders a convenient way to control power and air to various sources, like a body or trailer. They should be flexible and easily configurable to meet the vast and unique needs of body builders. The Spare switches, along with all hybrid switch variants, are rated to 15 A of current.

Peterbilt Motors Company

7-27

ELECTRICAL

SPARE POWER
Spare power connector P096 is located under the body builder panel towards the front on the right side. The mating harness is available from PACCAR parts with pre-labeled pigtails, S92-1250-1000. Any spare power requiring more than 20 amps must go directly to the battery box, not this spare circuit.

SPARE CIRCUIT CONNECTOR

Pin Spare Circuit No. Designation Fuse Max Rating

RED0710-2

Spare Battery #2

20A

RED0710-5

Spare Battery #1

20A

ORN0752-4

Spare Accessory #1

20A

WHT1500-102

Spare Ground

20A

ORN0730-1

Spare Ignition #1

20A

ORN0730-6

Spare Ignition #2

20A

BRN2620-8

Backlight

20A

Peterbilt Motors Company

7-28

ELECTRICAL

TRANSMISSION BACKUP SIGNALS
The back-up lamp signal can be accessed from P791 or P792 pin C tail lamp connector located on the chassis harness. It is recommended to use the RP170 connector, found on page 7-11 of this manual, as the preferred access point.

Mating Connector: Packard PN 12015713

Peterbilt Motors Company

7-29

ELECTRICAL

LIFT AXLES (PUSHERS & TAG)
All truck lift axles (pushers and tag), are direct wire Electric-Only. The wiring comes from the Primary Chassis Module or Secondary Chassis Module, and goes direct to the axle mounted solenoid. This is not from the EoA Solenoid Bank. The activation signal comes from either a dash mounted MUX switch, or a hardwired switch that is mounted outside of the cab. There are a total of four lift axle controls available; 3 pushers and 1 tag axle, or 4 pushers and no tag. These are controlled with separate switches by default. The customer can order the following configurations; steerable, nonsteerable, with auto-reverse, and with park brake interlock. A lift axle comes with a control switch (single or separate), a gauge, and a regulator valve.
LIFT AXLE DIAGRAM

TRUCK LIFT AXLE LOGIC
Lift Axle Type
Steerable Lift Axle w/o Auto-Reverse
Steerable Lift Axle with Auto-Reverse OR Non-Steerable Lift Axle w/o Park Brake Non-Steerable Lift Axle with Park Brake

Raise Condition Logic - Lift Switch is Inactive OR - Park Brake Active OR - Trans in Reverse - Lift Switch is Inactive OR - Park Brake Active
- Lift Switch is Inactive AND - Park Brake Inactive

Lower Condition Logic - Lift Switch is Active AND - Park Brake Inactive AND - Trans Not in Reverse - Lift Switch is Active AND - Park Brake Inactive
- Lift Switch is Active OR - Park Brake Active

Peterbilt Motors Company

7-30

ELECTRICAL

DIGITAL DISPLAY
The standard display comes with a set of gauges. A limited number of additional gauges can be configured on the 7" digital display after the initial truck build using Paccar Vehicle Pro (PVP). Please contact your local Peterbilt dealership for assistance.

Gauges on the 7" Digital Display
TELLTALE ICONS
Custom Telltales will no longer be available with a physical card inserted into the dash cluster. Instead, the body builder telltales will populate on the digital portion of the display from a limited list and can be reconfigured using PVP at your local Peterbilt dealership. The location of the telltale will be dependent on the configuration of the vehicle and what other telltales are present on the digital display. The Digital Display is capable of receiving up to 5 hardwire inputs to trigger the body builder (editable) telltales.

Peterbilt Motors Company

Body Builder Telltale Positions

7-31

ELECTRICAL

BODY BUILDER TELLTALE LOCATIONS

Peterbilt Motors Company

Body Builder Telltale Locations

7-32

SECTION 8 POWER TAKE-OFF (PTO)
INTRODUCTION
A Power Take Off (PTO) provides a way to divert some or all of the trucks engine power to another component. There are a wide variety of PTO options available on a Peterbilt that are described below.
FIGURE 7-1. Power Take-Off Locations
TRANSMISSION MOUTED PTO GENERAL MANUAL TRANSMISSIONS
This is the most common type of PTO that is used. On a manual transmission there are two locations for PTO's. There is a 6 bolt PTO on the right and an 8 bolt PTO on the bottom left (Figure 7.2). For more information go to www.roadranger.com and enter "PTO Installation Guide" in the search bar in the upper right corner.
FIGURE 7-2. HD Manual Transmission

POWER TAKE-OFF (PTO)

AUTOMATIC TRANSMISSIONS
On Allison transmissions there are two locations for PTO's. The Allison 4000 series has PTO locations at 1 and 8 o'clock viewed from the back of the transmission. See Figure 7-3. The 4000HS transmissions do not have any PTO locations. The 3000 series Allison transmissions have PTO locations at 4 and 8 o'clock (Figure 7-4). For more information on using PTO's with an Allison transmission go to www.allisontransmission.com and refer to the "Rugged Duty Series Brochure" and "PTO Request Flyer" which is available in a 1000/2000 version and a 3000/4000 version.

FIGURE 7-3. Allison 4000 Series

FIGURE 7-4. Allison 3000 Series

INSTALLATION CLEARANCES
Some PTO configurations will have clearance issues with other components on the truck. With manual transmissions, a 6-bolt PTO on the right will typically clear most components. This is also true when 30 and 45 degree adapters are used. The 8-bolt bottom mount PTO will not have any issues. On Allison 4000 series transmissions, most PTO's will fit in the 1 o'clock position without interfering with the cab. If a wet kit is used here, the dipstick housing will most likely need to be modified as it runs over the top of the transmission to the driver side of the vehicle. The PTO in the 8 o'clock position is typically ok. There are some scenarios where the PTO will be very close to or could interfere with the rear spring shackle on the front suspension.

Peterbilt Motors Company

8-2

POWER TAKE-OFF (PTO)

FRONT ENGINE PTO
Front engine PTO (FEPTO) is sometimes used in vocational applications. When a FEPTO is spec'd on a truck, the cooling module has a pass-thru to allow for a shaft to be bolted to the front of the crankshaft and extend out to the front of the truck. The bumper will be extended out to mount the customer installed aftermarket device. Bumper extensions available are 9", 4-7/8", or no extension. See Figure 7-5 and Figure 7-6 for radiator installations with and without FEPTO provisions.

FIGURE 7-5. Cooling Module With FEPTO Provision

FIGURE 7-6. Cooling Module Without FEPTO Provision

Peterbilt Motors Company

8-3

POWER TAKE-OFF (PTO)

REAR ENGINE PTO
Rear Engine PTO (REPTO) is also sometimes used in vocational applications. The REPTO is driven off the rear gear train on the engine. There is a 1350/1410 flange on the bell housing in the 1 o'clock position that can be used to attach a hydraulic pump or driveshaft. See Figure 7-7 for an example. The REPTO flange will always be turning when the engine is running and the output rotation is the same as the engine. The Cummins ISL9 and PX-9 REPTO turns at a rate of 1.15:1. The Paccar MX-11 turns at a rate of 1.3:1.

FIGURE 7-7. REPTO Flywheel Housing

Peterbilt Motors Company

8-4

POWER TAKE-OFF (PTO)

INSTALLATION OF PTO
CHELSEA 890 The installation shown below in figures 7-10 through 7-12 are of the model 520 with a Chelsea 890 PTO.

FIGURE 7-10. Bottom View

FIGURE 7-11. Rear View

FIGURE 7-12. Isometric View with Enhanced View

Peterbilt Motors Company

8-5

POWER TAKE-OFF (PTO)

MX PTO MODE CONTROL (PMC)
MX PTO Mode Control (PMC) includes features, limits, and protections that are active in PTO Mode. It also includes PTO Speed Control (PSC) functionality that includes a variety of useful ways to control engine speed during PTO operation.
Reference the VECU Programming Guide for detailed information on PTO Mode Control configuration, functionality and usage.

MX PTO MODE ACTIVATION
There are three ways to activate PTO Mode. PMC parameter(s) must be enabled on the vehicle in order for PTO Mode to activate.
· Active feedback of physical PTO engagement o Trucks with factory installed PTOs or that are coded for Customer Installed PTOs will come prewired to receive the PTO engaged signal.
· Active PTO Mode Switch o The PTO Mode Switch can be configured at the time of order or in the aftermarket. The PTO Mode switch can be used to activate PTO Mode independent of PTO engagement and may be useful for trucks with FEPTOs or REPTOs that need the ability to use PMC features.
· PTO Mode Request over the CAN bus

PTO Mode Switch

MX PTO MODE CONTROL LOCATION
Vehicles can be configured to control PTO functionality from a cab location and/or a remote location (outside the cab). Most PTO Mode Features and Interlocks have a cab station option and a remote station option. This allows a vehicle to be configured for two unique jobs. For example a vehicle could be configured for mobile cab station operation with one set of limits and stationary remote station operation with a different set of limits.
If a vehicle is configured for both cab and remote PTO control, a PMC Location Switch must be installed on the dash. This switch will determine which set of PTO Mode Features to apply and which control location to use.

PMC Location Switch

Peterbilt Motors Company

8-6

POWER TAKE-OFF (PTO)

MX PTO MODE FEATURES
The following features and configurations are available when PTO Mode is active. · Cab Accelerator Configurations o Disable in PTO Mode o Torque Control (Automotive Style) o Speed Control o Enable in Remote PTO Mode · Log Time and Fuel in PTO Mode · Disable Engine Idle Shutdown Timer (EIST) in PTO Mode · PTO Mode Specific Engine Idle Shutdown Timer (EIST) · Fan On in PTO Mode · Adjustable PTO Engine Speed Governor Responsiveness (for light or heavy varying loads)

MX PTO MODE PROTECTIONS AND LIMITS
The following protections and limits are available when PTO Mode is active. Protections and limits are active when PTO Mode is active and will continue to be active until PTO Mode is no longer active.
· Max Vehicle Speed · Max Engine Torque · Max Engine Speed Accelerator Controlled · Max Engine Speed Switch Controlled · Min Engine Speed · Max Rate of Engine Speed Change

Peterbilt Motors Company

8-7

POWER TAKE-OFF (PTO)

MX PTO SPEED CONTROL (PSC) FEATURES
PTO Mode must be active prior to using PTO Speed Control (PSC) to control engine speed. PSC is available from both the cab station and remote station (see PTO Mode Control Location Section above). In the cab location, cruise control switches and PSC specific switches are used to control engine speed. Equivalent remote station inputs are available (Reference Remote PMC Connections section below).

· +/o Configurable to either command one unique preset when "+" is pressed and a second unique preset when "-" is pressed OR toggle through up to 6 presets.

· Preset 1, 2 & 3 o 3 Dedicated Presets with the following configuration options. Latch: Hold Preset Speed When Switch is Released Cancel: Cancel PSC When Switch is Released o The Remote PTO Inputs for Presets 1, 2 & 3 can be configured to function when Cab PTO Mode is active o In some applications, it may be useful to connect the Remote PTO Inputs for Presets 1, 2 & 3 to something other than a hand-operated switch. For example, the inputs can be configured to activate based off PTO engagement, hydraulic pressure or equipment movement.

Dash Switches Dedicated Preset Switches

Peterbilt Motors Company

8-8

POWER TAKE-OFF (PTO)

MX PTO SPEED CONTROL INTERLOCKS
PTO Speed Control Interlocks cancel PSC when active. There is an option to disable the accelerator when a PSC interlock is active. When a PSC interlock is active the engine speed will return to the Minimum Engine Speed in PTO Mode or the engine speed commanded by the accelerator if applicable. An active PSC interlock does not disable PMC protections and limits.
The configurable PSC interlocks are listed below. · Clutch Pressed · Park Brake NOT Set · Transmission NOT in Neutral · Service Brake (Configurable for Pressed or NOT Pressed) · Custom Hardwired Interlock (Configurable Polarity)
A custom hardwired interlock input is available that will allow a body builder to create a customized interlock for their specific application. This interlock functions for both Cab and Remote Station PSC. Many types of switches such as hand-operated switches, hydraulic pressure switches, equipment position switches, or pressure plate switches can activate the interlock. The switch polarity is configurable which allows the body builder to choose the interlock state if the circuit fails.

PTO SPEED CONTROL ICONS
During PSC operation there will be icons on the digital display that indicate: · PSC Enabled (white icon) or Active (green icon) · PSC Control Location (designed by "Cab" or "Remote") · PSC target engine speed when active

Cab PTO Active
Peterbilt Motors Company

Remote PTO Active

Cab PTO Enabled 8-9

POWER TAKE-OFF (PTO)

REMOTE PMC CONNECTIONS
There are options to control PTO functionality from the following locations. · Engine Bay Hardwired option only · RP1226 Connection in the Cab CAN bus connection only · BOC/BOS Hardwired and CAN bus connections · EOF Hardwired and CAN bus connections
There are options available for the body builder to specify controller speeds of 250 kbps or 500 kbps.

MX PTO CAN functionality may be accessed in the cab through the RP1226 connector and remotely through the body connectors K-CAN (E-3375-021) and B-CAN (DTM06-2S-EP10) Connectors.
MX PTO hardwired functionality may be accessed in the engine bay or on the frame through optional 12-Way and 8-Way connectors

12-Way Deutsch Connector

8-Way Deutsch Connector

RP1226 Delphi Connector

Pin-out information for the PTO connectors can be found in the Electrical Section

Peterbilt Motors Company

7-10

POWER TAKE-OFF (PTO)

PTO MODE CONTROL FLOW CHARTS Cab Controls

Remote Hardwire Controls

Remote CAN Controls

Remote TSC1 CAN Controls

Peterbilt Motors Company

8-11

POWER TAKE-OFF (PTO)

MX PTO TROUBLESHOOTING GUIDE

The following table is a trouble shooting guide for MX PTO functionality.

SYMPTOM

POSSIBLE CAUSE

SOLUTION

PTO Mode Switch is not installed

Install and apply PTO Mode Switch

PTO engagement feedback is Provide PTO engagement

not provided to standard/optional feedback to SCM (PTO#1)

chassis module

and/or OCM (PTO#2)

No green PTO cluster telltale
(PMC is not active)

PTO ball switch is faulty
PTO device is not engaging due to air supply solenoid or electric
signal not active

Check that PTO ball switch is providing power or ground
*Check EOA parameter settings in PVP *EOH PTOs are configured with parameter P816 *Check popups on driver display for interlock conditions (PTO engagements may be configured with park brake or PTO interlocks dependent on EOA parameter settings, these will result in popups on driver display)

PTO cluster telltale blinks intermittently

PTO engagement feedback connection is faulty

Check PTO engagement feedback to SCM/OCM

PMC switch connection is intermittent

Verify PMC switch connection (LIN jumper)

FIC or Cruise Control appears instead of PTO Speed Control on driver
display
(when green PTO cluster telltale is present)

Both Cab and Remote control locations are configured in PVP, but PMC location switch is not
installed
PTO/CC On/Off switch is not applied
CAB and/or Remote PMC is not configured

Install PMC location switch, or select Cab or Remote control location in PVP
Press/apply the PTO/CC On/Off switch on steering wheel or dashboard (cab controls) or remote station (pin 6 on P197) or via J1939 PTO SPN980 (remote controls) Enable CAB and/or Remote PMC in PVP and re-flash the VECU (PMC location switch is required if both control locations are configured)

Peterbilt Motors Company

8-12

POWER TAKE-OFF (PTO)

White PTO icon appears, but no green PTO Speed Control
icon on driver display

PTO Speed Control is not active
PTO Speed Control switches are not enabled
PTO Speed Control interlock is violated

Activate PTO Speed Control using cab or remote Set/Resume, +/-, Dedicated Preset, or J1939 PTO inputs. See PTO Mode Control Flowcharts in this section. Enabled PTO Speed Control switches P543 (Cab +/-), P610 (Cab Set/Resume), PXXX (Cab Dedicated Preset), P576 (Remote +/-), P611 (Remote Set/Resume, or P568/P569 (Remote Dedicated Preset)
Check that enabled PTO Speed Control interlocks are satisfied for cab and/or remote controls: *Park brake *Service brake active or inactive *Neutral position *Custom interlock *SCR/DEF Level Inducement *Adaptive Cruise Control fault *ABS Braking Event *Stop Engine Lamp

Current PTO Speed Control location is not selected (when
configured for Cab AND Remote control)

Select CAB or REMOTE control location using PMC location switch

Green PTO Speed Control icon on driver display
appears, but engine speed will not change

PMC engine speed slew rates Change engine speed slew rates

are zero

to non-zero values

PMC engine torque limit is too low

Increase engine torque limit

PSC Increment and/or

Configure increment and/or

decrement intervals are zero decrement to non-zero values

PSC Presets are not enabled Enable PSC Presets and program or are programmed to the Min preset values greater than the Engine Speed in PTO Mode Min Engine Speed in PTO Mode

Cab accelerator pedal does not control engine speed

Cab accelerator control is not enabled

Enable the accelerator in Cab Control (P545), and/or Remote Control (P577) in PVP and reflash the VECU

Peterbilt Motors Company

8-13

POWER TAKE-OFF (PTO)

Remote accelerator pedal does not control engine speed
J1939 PTO CAN message does not affect PTO Speed
Control

PTO Mode Control is not active
Remote accelerator control is not enabled
PTO Speed Control interlock is violated
Remote accelerator pedal has not returned to the fully
released/zero position after entering PTO Mode Control
Remote controls are not configured and/or selected
Body controller source address is not equal to 7d or
33d (0x21)

Activate PTO Mode Control using PMC switch, provide PTO engagement feedback, or over the CAN bus Enable the remote accelerator control (P578) in PVP and reflash the VECU Check that enabled PTO Speed Control interlocks are satisfied: *Park brake *Service brake *Neutral position *Clutch position *Custom interlock *SCR/DEF Level Inducement *Adaptive Cruise Control *ABS Braking Event *Stop Engine Lamp
Calibrate/release remote accelerator to zero position
Configure Remote PTO Mode Control and ensure it is selected using PMC Location switch (if Cab and Remote are both enabled)
Configure body controller source address equal to 7d or 33d (0x21)

J1939 PTO SPN980 (PTO Governor Enable Switch) is
not equal to 1 (enabled)

Send J1939 PTO SPN 980 equal to 1

J1939 TSC1 CAN message does not affect PTO Speed
Control

Remote controls are not configured and/or selected
Body controller source address is not equal to 7d or
33d (0x21)

Configure Remote PTO Mode Control and ensure it is selected using PMC Location switch (if Cab and Remote are both enabled)
Configure body controller source address equal to 7d or 33d (0x21)

Peterbilt Motors Company

8-14

POWER TAKE-OFF (PTO)

J1939 TSC1 SPN695 (Override Control Mode) is
equal to zero

Send J1939 TSC1 SPN695 equal to 1, 2 or 3

J1939 TSC1 SPN3350 (TSC1 Control Purpose) is not 2 (PTO Governor)

Send J1939 TSC1 SPN3350 equal to 2

Peterbilt Motors Company

8-15

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APPENDICES

Revision Log

Revision Log 2021 520 VMUX Body Builder Manual

Revision

Author

Date of Publication Pages #

Description of Changes

000

M. Evans

5/18/2021

n/a

Initial Release

Peterbilt Motors Company

References

Adobe PDF Library 21.1.187