RM990 3 & P990 Rearmount Mowers !! Woods

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OPER ATOR'S MANUAL
REARMOUNT
MOWERS
20944
Rev. 3/14/2008
Tested. Proven. Unbeatable.
RM990-3
P990-3
2 Introduction
Gen’l (Rev. 2/19/2008)
TO THE DEALER:
Assembly and proper installation of this product is the responsibility of the Woods® dealer. Read manual instructions
and safety rules. Make sure all items on the Dealer’s Pre-Delivery and Delivery Check Lists in the Operator’s Manual
are completed before releasing equipment to the owner.
The dealer must complete the Product Registration online at the Woods Dealer Website or complete the mail-in
form included with the Operator’s Manual. If using the mail-in form, the dealer is to return the prepaid postage portion to
Woods, give one copy to the customer, and retain one copy. Failure to register the product does not diminish
customer’s warranty rights.
TO THE OWNER:
Read this manual before operating your Woods equipment. The information presented will prepare you to do a better and
safer job. Keep this manual handy for ready reference. Require all operators to read this manual carefully and become
acquainted with all adjustment and operating procedures before attempting to operate. Replacement manuals can be
obtained from your dealer. To locate your nearest dealer, check the Dealer Locator at www.WoodsEquipment.com, or in
the United States and Canada call 1-800-319-6637.
The equipment you have purchased has been carefully engineered and manufactured to provide dependable and
satisfactory use. Like all mechanical products, it will require cleaning and upkeep. Lubricate the unit as specified.
Observe all safety information in this manual and safety decals on the equipment.
For service, your authorized Woods dealer has trained mechanics, genuine Woods service parts, and the necessary
tools and equipment to handle all your needs.
Use only genuine Woods service parts. Substitute parts will void the warranty and may not meet standards required for
safe and satisfactory operation. Record the model number and serial number of your equipment in the spaces
provided:
Model: _______________________________ Date of Purchase: _____________________
Serial Number: (see Safety Decal section for location) ____________________________________
Provide this information to your dealer to obtain correct repair parts.
Throughout this manual, the term NOTICE is used to indicate that failure to observe can cause damage to equipment.
The terms CAUTION, WARNING, and DANGER are used in conjunction with the Safety-Alert Symbol (a triangle with
an exclamation mark) to indicate the degree of hazard for items of personal safety.
Introduction 3
20944 (Rev. 9/2/2005)
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY DECALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
OWNER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DEALER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
DEALER CHECK LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
BOLT TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
BOLT SIZE CHART & ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 65
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
REPLACEMENT PARTS WARRANTY . . . . . . . . . . . . INSIDE BACK COVER
PRODUCT WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BACK COVER
Si no lee Ingles, pida ayuda a
alguien que si lo lea para que le
traduzca las medidas de seguridad.
LEA EL INSTRUCTIVO!
!
(Rev. 3/14/2008)
4 Introduction
20944 (Rev. 9/2/2005)
SPECIFICATIONS
MODEL RM990-3 MOUNTED P990-3 TOWED
Hitch Three Point, Category 1 Towed
Cutting Width 90" 90"
Cutting Height Range 1" - 8" 1" - 8-1/2"
Shipping Weight 930 lbs. 1,000 lbs.
Blade Speed (feet per minute) 15,569 15,569
Blade Speed (RPM) 1,926 1,926
Blade Spindles 3 3
Number of Blades 6 6
Universal Drive Series ASAE Cat. 4 ASAE Cat. 3
Caster Wheels 13 x 5 x 10 Solid Rib Tire -----
or 18 x 19.5 x 8 Pneumatic Tires
Wheels ----- 18 x 19.5 x 8
Rib Pneumatic Tires
Tractor PTO Speed RPM 540 540
Recommended Maximum
Tractor Horsepower 50 50
Mower Frame Thickness 7 GA 7 GA
GENERAL INFORMATION
The purpose of this manual is to assist you in operating
and maintaining your mower. Read it carefully. It fur-
nishes information and instructions that will help you
achieve years of dependable performance. These
instructions have been compiled from extensive field
experience and engineering data. Some information
may be general in nature, due to unknown and varying
operating conditions. However, through experience
and these instructions, you should be able to develop
procedures suitable to your particular situation.
Some illustrations in this manual show the
mower with safety shields removed to provide a
better view. The mower should never be operated
with any safety shielding removed.
The illustrations and data used in this manual were cur-
rent at the time of printing. However, due to possible
inline production changes, your machine may vary
slightly in detail. We reserve the right to redesign and
change the machines as may be necessary without
notification.
Throughout this manual, references are made to right
and left directions. These are determined by standing
behind the tractor facing the direction of forward travel.
Blade rotation is counter-clockwise as viewed from the
top of the mower.
Safety 5
RM_SR (Rev. 4/28/2006)
TRAINING
Safety instructions are important! Read all
attachment and power unit manuals; follow all
safety rules and safety decal information. (Replace-
ment manuals and safety decals are available from
your dealer. To locate your nearest dealer, check
the Dealer Locator at www.WoodsEquipment.com,
or in the United States and Canada call 1-800-319-
6637.) Failure to follow instructions or safety rules
can result in serious injury or death.
If you do not understand any part of this manual
and need assistance, see your dealer.
Know your controls and how to stop engine and
attachment quickly in an emergency.
Operators must be instructed in and be capable
of the safe operation of the equipment, its attach-
ments, and all controls. Do not allow anyone to
operate this equipment without proper instruc-
tions.
Never allow children or untrained persons to
operate equipment.
PREPARATION
Check that all hardware is properly installed.
Always tighten to torque chart specifications
unless instructed otherwise in this manual.
Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
Make sure attachment is properly secured,
adjusted, and in good operating condition.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
Connect PTO driveline directly to power unit
PTO shaft. Never use adapter sleeves or adapter
shafts. Adapters can cause driveline failures due to
incorrect spline or incorrect operating length and
can result in personal injury or death.
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS system in “locked up” position at all times.
Remove accumulated debris from this equip-
ment, power unit, and engine to avoid fire hazard.
Make sure all safety decals are installed.
Replace if damaged. (See Safety Decals section for
location.)
Make sure shields and guards are properly
installed and in good condition. Replace if damaged.
A minimum 20% of tractor and equipment
weight must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with
front wheel weights, ballast in tires or front tractor
weights. Weigh the tractor and equipment. Do not
estimate.
Inspect and clear area of stones, branches, or
other hard objects that might be thrown, causing
injury or damage.
OPERATION
Keep bystanders away from equipment.
Never direct discharge toward people, animals,
or property.
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
Do not operate or transport equipment while
under the influence of alcohol or drugs.
Always comply with all state and local lighting
and marking requirements.
Operate only in daylight or good artificial light.
Safety is a primary concern in the design and man-
ufacture of our products. Unfortunately, our efforts
to provide safe equipment can be wiped out by an
operator’s single careless act.
In addition to the design and configuration of equip-
ment, hazard control and accident prevention are
dependent upon the awareness, concern, judge-
ment, and proper training of personnel involved in
the operation, transport, maintenance and storage
of equipment.
It has been said “The best safety device is an
informed, careful operator.” We ask you to be that
kind of operator.
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
6 Safety
RM_SR (Rev. 4/28/2006)
Never allow riders on power unit or attachment.
Keep hands, feet, hair, and clothing away from
equipment while engine is running. Stay clear of all
moving parts.
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS systems in “locked up” position at all times.
Always sit in power unit seat when operating
controls or starting engine. Securely fasten seat
belt, place transmission in neutral, engage brake,
and ensure all other controls are disengaged
before starting power unit engine.
Operate tractor PTO at 540 RPM. Do not exceed.
Look down and to the rear and make sure area
is clear before operating in reverse.
Do not operate or transport on steep slopes.
Do not stop, start, or change directions sud-
denly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
TRANSPORTATION
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS system in “locked up” position at all times.
Never exceed 20 mph (32.2 km/h) during trans-
port.
Always comply with all state and local lighting
and marking requirements.
Never allow riders on power unit or attachment.
Do not operate PTO during transport.
Look down and to the rear and make sure area
is clear before operating in reverse.
Do not operate or transport on steep slopes.
Do not operate or transport equipment while
under the influence of alcohol or drugs.
MAINTENANCE
Before dismounting power unit or performing
any service or maintenance, follow these steps:
disengage power to equipment, lower the 3-point
hitch and all raised components to the ground,
operate valve levers to release any hydraulic pres-
sure, set parking brake, stop engine, remove key,
and unfasten seat belt.
Before performing any service or maintenance,
lower equipment to ground or block securely, turn
off engine, remove key, and disconnect driveline
from tractor PTO.
Do not modify or alter or permit anyone else to
modify or alter the equipment or any of its compo-
nents in any way.
Make sure attachment is properly secured,
adjusted, and in good operating condition.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Make certain all movement of equipment com-
ponents has stopped before approaching for ser-
vice.
Frequently check blades. They should be sharp,
free of nicks and cracks, and securely fastened.
Use a new Nylok blade bolt and cup washers
when you replace the blade. Do not substitute any
bolt for the special blade bolt. It is self-locking,
meeting the non-loosening requirements for this
application.
Do not handle blades with bare hands. Careless
or improper handling may result in serious injury.
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
Tighten all bolts, nuts, and screws to torque
chart specifications. Check that all cotter pins are
installed securely to ensure equipment is in a safe
condition before putting unit into service.
Make sure all safety decals are installed.
Replace if damaged. (See Safety Decals section for
location.)
Make sure shields and guards are properly
installed and in good condition. Replace if damaged.
STORAGE
Block equipment securely for storage.
Keep children and bystanders away from stor-
age area.
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Safety 7
20944 (Rev. 2/3/2006)
1 - Serial Number Plate
MODEL NO. SERIAL NO.
Woods Equipment Company
Oregon, Illinois, U.S.A.
540 RPM
WARNING
18866-D
4 - 18866
FALLING OFF CAN RESULT IN BEING RUN OVER.
Tractor must be equipped with ROPS (or ROPS CAB) and seat
belt. Keep foldable ROPS systems in “locked up” position at all
times.
Buckle Up! Keep seat belt securely fastened.
Allow no riders.
RAISED EQUIPMENT CAN DROP AND CRUSH.
Before working underneath, follow all instructions and safety rules in
operator’s manual and securely block up all corners of equipment
with jack stands.
Securely blocking prevents equipment dropping from hydraulic leak-
down, hydraulic system failures or mechanical component failures.
FALLING OFF OR FAILING TO BLOCK SECURELY CAN
RESULT IN SERIOUS INJURY OR DEATH.
WARNING
18865--C
2 - 18865
12 - 20106 Red Rear Reflector
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!
8 Safety
20944 (Rev. 2/3/2006)
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!
BE CAREFUL!
Use a clean, damp cloth to clean safety decals. Avoid
spraying too close to decals when using a pressure
washer; high-pressure water can enter through very
small scratches or under edges of decals causing
them to peel or come off.
Replacement safety decals can be ordered free from
your Woods dealer. To locate your nearest dealer,
check the Dealer Locator at
www.WoodsEquipment.com, or in the United States
and Canada call 1-800-319-6637.
7 - 18864
DANGER
ROTATING DRIVELINE
CONTACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT -
All driveline guards, tractor and
equipment shields in place
Drivelines securely attached at both ends
Driveline guards that turn freely on
driveline 18864-C
SHIELD MISSING
DO NOT OPERATE
PUT SHIELD ON
DANGER
18867--B
5 - 18867
WARNING
TO AVOID SERIOUS
INJURY OR DEATH:
Read Operator's Manual (available
from dealer) and follow all safety
precautions.
Keep all shields in place and in good
condition.
Operate mower from tractor seat only.
Lower mower, stop engine and remove
key before dismounting tractor.
Allow no children or untrained persons
to operate equipment.
Do not transport towed or
semi-mounted units over 20 mph.
FAILURE TO OPERATE SAFELY
CAN RESULT IN
INJURY OR DEATH.
18877-C
3 - 18877
CONTACT WITH ROTATING PARTS
CAN CAUSE SERIOUS INJURY.
WARNING
15502--B
ROTATING COMPONENTS
Do not operate without cover in place.
Look and listen for rotation. Do not
open cover until all components have
stopped.
6 - 15502
Check for leaks with cardboard; never use hand.
Before loosening fittings: lower load, release pressure, and
be sure oil is cool.
Consult physician immediately if skin penetration occurs.
WARNING
19924-B
8 - 19924
SHIELD MISSING
Do not operate.
Put shield on.
DANGER
18868-B
13 - 18868
SHIELD MISSING
DO NOT OPERATE - PUT SHIELD ON
18869-B
DANGER
15 - 18869
Safety 9
20944 (Rev. 2/3/2006)
9 - 19782
10 - 15503 11 - 33347
ROTATING BLADES AND
THROWN OBJECTS
Do not put hands or feet under or into mower when
engine is running.
Before mowing, clear area of objects that may be
thrown by blade.
Keep bystanders away.
Keep guards in place and in good condition.
BLADE CONTACT OR THROWN OBJECTS CAN
CAUSE SERIOUS INJURY OR DEATH.
DANGER
15503-C
33347E
If shaft connection is visible, shield
is missing. Replace shield before
operating equipment.
DA
NG
NG
ER
ER
1004114
16 - 1004114
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!
10 Operation
20944 (Rev. 2/3/2006)
OPERATION
The operator is responsible for the safe operation of
the mower. The operator must be properly trained.
Operators should be familiar with the mower, the trac-
tor, and all safety practices before starting operation.
Read the safety rules and safety decals on page 5 to
page 10. This mower is designed for light brush shred-
ding and grass mowing. It is especially useful in cane,
berry, grape and vegetable crops for mowing and
shredding prunings. Recommended mowing speed for
most conditions is from two to five mph.
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
Never allow children or untrained persons to
operate equipment.
Keep bystanders away from equipment.
Before servicing, adjusting, repairing or unplug-
ging, stop tractor engine, place all controls in neu-
tral, set park brake, remove ignition key, and wait
for all moving parts to stop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
ATTACHING RM990-3 MOUNTED MOWER
TO TRACTOR
Hitch Point Distance and PTO Clearance
Figure 1. PTO to Mounting Point Distance - RM990-3
The standard drive is intended for use with tractors that
have 18" to 21" between the end of the tractor PTO
shaft and the mounting pin holes on the lower lift arms
when they are horizontal (refer to Figure 1). If the dis-
tance is less than 18", the slip tubes of the PTO shaft
can bottom out. If the distance exceeds 21", there may
not be sufficient engagement when operating on
uneven terrain. Shorter or longer drives are available.
Contact your WOODS dealer for assistance.
Standard Category 1 mounting pins are used when
attaching the mower to the tractor. Check to be sure
the mounting pins are properly torqued to 300 lbs-ft.
Attach the mower hitch pins to the lower tractor lift
arms and secure.
Attach the tractor top link to mower top clevis. Connect
driveline to tractor PTO shaft. A standard 1-3/8" 6B
spline driveline with a QD yoke is used to connect
mower to tractor. Adjust top link. (See page 12.)
Attach the front driveline shield tether chain to the trac-
tor to prevent driveline shield rotation.
Carefully raise mower and check for driveline clear-
ance between drive shielding and front of mower
frame; a minimum of 1/2" clearance is required. Adjust-
ment to tractor upper lift stop may be required to pre-
vent driveline from coming in contact with mower
frame.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
ADANGER
AWARNING
ACAUTION
AWARNING
(Rev. 4/28/2006)
Operation 11
20944 (Rev. 2/3/2006)
Cutting Height Adjustment
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
NOTICE
Avoid very low cutting heights. Blades striking
the ground produces one of the most damaging
shock loads a mower can encounter. Allowing
blades to contact ground repeatedly, will cause
damage to mower and drive.
Before leveling unit that is equipped with pneumatic
tires, check air pressure. Follow manufacturer's guide-
lines on tire sidewall.
Level mower from side to side. Check by measuring
from mower frame to the ground at each front corner.
Adjust, using tractor 3-point arm leveling device. See
page 12.
Adjust cutting height with tractor 3-point arms and rear
caster wheel adjustment. The cutting height will be the
distance between the blade and the ground. The
blades are approximately 5" below the top of the
mower frame. To check cutting height, place a straight
edge along top edge of mower frame as shown in Fig-
ure 2. Measure from bottom of straightedge to the
ground at locations (A) and (B). Subtract 5" from mea-
surement (B) to determine cutting height.
For best mowing results adjust the front of the mower
slightly lower than the rear. Measurement at location
(A) should be at least 1/4" greater than location (B),
and not more than 1/2" greater than location (B).
Adjust the check chains, tailwheel and/or lower tractor
lift arms to maintain desired cutting height.
NOTE: Optional check chains and front gauge
wheels are available.
Before working underneath, raise mower to
highest position and block securely. Blocking up
prevents mower dropping due to hydraulic leak
down, hydraulic system failures, or mechanical
component failures.
Figure 2. Cutting Height Adjustment
on RM990-3 Mounted Mower
Cutting Height Adjustment with Front & Rear
Caster Wheel
Place the front and rear adjustment in corresponding
lettered holes. Refer to the chart for approximate cut-
ting height.
Figure 3. RM990-3 Cutting Height Adjustment with Front Caster Wheel
AWARNING
AWARNING
Hole No. Approximate Cutting Height
A1.00"
B1.50"
C2.00"
D2.50"
E3.00"
F3.5"
Hole No. Approximate Cutting Height
G 4.00"
H 4.50"
I 5.00"
J 6.00"
K 7.00"
L 8.00"
12 Operation
20944 (Rev. 2/3/2006)
Top Link Adjustment
When the cutting height is adjusted, adjust tractor top
link until mower top link attachment point (A) is aligned
vertically with mower hitch pin (B).
Figure 4. Top Link Adjustment - RM990-3
Tractor Stability
A minimum 20% of tractor and equipment
weight must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with
front wheel weights, ballast in tires or front tractor
weights. Weigh the tractor and equipment. Do not
estimate.
Figure 5. Tractor Stability - RM990-3
ATTACHING P990-3 PULL-TYPE MOWER
TO TRACTOR
Drawbar to Hitch Point Distance
Connect mower tongue to tractor drawbar. The mower
is shipped with a 1-3/8" PTO spline. The horizontal dis-
tance between the end of the tractor PTO shaft and the
drawbar hitch point should be 14". This distance must
not vary more or less than 1" or the drive may be dam-
aged when turning.
Adjust the tractor drawbar to obtain the desired draw-
bar to hitch point distance. On some tractors, a draw-
bar kit must be used to obtain the required dimension.
Check with your tractor dealer if you encounter prob-
lems.
When attaching a pull-type unit to the tractor
drawbar, always use a high-strength drawbar pin.
The drawbar pin must have a device that will lock it
into position. Secure safety chain to attachment
and tractor.
Raise mower tongue to tractor drawbar height with jack
provided and attach with a 3/4" or larger high-strength
drawbar pin. Retain pin to keep it in place.
Connect mower driveline to tractor PTO shaft, making
sure spring-activated locking pin slides freely and is
seated firmly in tractor PTO spline groove.
When driveline is attached to tractor, attach front drive-
line shield tether chain to the tractor to prevent drive-
line shield rotation.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
Adjust drive shaft carrier bearing vertically in H-frame
until driveline is as straight as possible between tractor
PTO and mower gearbox.
Remove parking jack from tongue. Attach to storage
bracket on deck. Always attach jack to tongue to hold it
up when disconnecting it from tractor.
Cutting Height Adjustment
Place tractor and mower on a level surface. Check to
make sure tire pressure is correct and equal on tractor
and mower. The correct pressure for mower pneumatic
tires is 36 psi.
NOTICE
Avoid very low cutting heights. Blades striking
the ground one of the most damaging shock loads
a mower can encounter. Allowing blades to contact
ground repeatedly, will cause damage to mower
and drive.
Adjust the mower front to back with an attitude rod.
Raise the mower front by turning the attitude rod nut in;
lower it by turning nut out. Run front of mower level
with rear, or no more than 1/2" lower than rear. Mower
cutting height is raised, lowered, and maintained with a
AWARNING
AWARNING
AWARNING
Operation 13
20944 (Rev. 2/3/2006)
manual ratchet adjustment link or optional hydraulic
cylinder.
An optional stroke control kit is available for use with
the optional hydraulic cylinder. When a desired cutting
height is pre-set and the stroke control kit is placed on
the cylinder rod, you can raise the mower and return
easily to the pre-set height.
PRE-OPERATION CHECKLIST
(Owner Responsibility)
___ Review and follow all safety rules and safety
decal instructions on page 5 through page 9.
___ Check that all safety decals are installed and in
good condition. Replace if damaged.
___ Check that all shields and guards are properly
installed and in good condition. Replace if dam-
aged.
___ Check that all hardware and cotter pins are prop-
erly installed and secured.
___ Check to ensure blades are sharp, in good condi-
tion, and installed correctly. Replace if damaged.
___ Check that equipment is properly and securely
attached to tractor.
___ Make sure driveline spring-activated locking pin
or collar slides freely and is seated firmly in trac-
tor PTO spline groove.
___ Before starting tractor, check all equipment drive-
line guards for damage and make sure they
rotate freely on all drivelines. Replace any dam-
aged guards. If guards do not rotate freely on
drivelines, repair and replace bearings before
operating.
___ Make sure the driveline guards and tether chains
are in good condition. Guards must rotate freely
on driveline. Fasten tether chains as instructed to
the tractor and the equipment.
___ Inspect area and remove stones, branches or
other hard objects that might be thrown, causing
injury or damage.
___ Do not allow riders.
___ Check all lubrication points and grease as
instructed in “Service, Lubrication Information”.
Make sure the PTO slip joint is lubricated and that
the gearbox fluid levels are correct.
___ Set tractor PTO at 540 rpm.
___ Check that all hydraulic hoses and fittings are in
good condition and not leaking before starting
tractor. Check that hoses are not twisted, bent
sharply, kinked, frayed or pulled tight. Replace
any damaged hoses immediately.
___ Raise and lower equipment to make sure air is
purged from hydraulic cylinders and hoses.
___ Make sure tractor ROPS or ROPS CAB and seat
belt are in good condition. Keep seat belt
securely fastened during operation.
___ Before starting engine, operator must be in trac-
tor seat with seat belt fastened. Place transmis-
sion in neutral or park, engage brake and
disengage tractor PTO.
STARTING AND STOPPING MOWER
Power for operating the mower is supplied by tractor
PTO. Do not exceed tractor manufacturer's rated PTO
speed of 540 rpm maximum. Know how to stop tractor
and mower quickly in case of an emergency.
Should mower become plugged, causing belt to slip,
immediately maneuver equipment into a previously cut
area and allow mower to clear accumulated material.
Continue running at least two minutes, allowing pulleys
to cool. Stopping the mower with belt in contact with a
very hot pulley will bake and ruin belt.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
OPERATING TECHNIQUE
Proper ground speed will depend upon the terrain and
the height, type and density of material to be cut. Nor-
mally, ground speed will range from two to five mph.
Tall dense material should be cut at a low speed, while
thin medium-height material can be cut at a higher
ground speed.
Always operate tractor PTO at 540 rpm; this is neces-
sary to maintain proper blade speed and produce a
clean cut.
Under certain conditions, tractor tires may roll some
grass down and prevent it from being cut at the same
height as the surrounding area. When this occurs,
reduce tractor ground speed but maintain 540 rpm PTO
speed. The lower ground speed will permit grass to at
least partially rebound.
Under some conditions, grass will not rebound enough
to be cut evenly. In general, lower cutting heights give a
more even cut with less tendency to leave tire tracks.
However, it is better to cut grass frequently rather than
too short. Short grass deteriorates rapidly in hot
weather and invites weed growth during growing sea-
sons. Follow local recommendations for the suitable
cutting height in your area.
ACAUTION
14 Operation
20944 (Rev. 2/3/2006)
Tips
Inspect and clear area of stones, branches, or
other hard objects that might be thrown, causing
injury or damage.
Extremely tall material should be cut twice. Cut mate-
rial higher the first pass. Then cut at desired height, at
90° to first pass.
Remember, sharp blades produce cleaner cuts and
require less power.
Analyze area to be cut to determine best procedure.
Consider height and type of material and terrain type:
hilly, level or rough.
Plan your mowing pattern to travel straight forward
whenever possible.
Optional Blade
The mower is equipped with free-swinging suction type
blades as standard equipment when shipped from the
factory. If you are operating in a sandy area or where
high abrasive wear occurs and causes damage to the
fin of the standard suction type blade, an optional low
suction type blade is available.
Optional Front Roller
The tailwheels and side skids effectively reduce scalp-
ing in most cases. However, you may encounter areas
where the tailwheels and/or side skids drop into
depressions and allow center of mower to contact
ground and scalp. An optional front roller may be
installed to minimize scalping.
Uneven Terrain
Do not operate or transport on steep slopes.
Do not stop, start, or change directions sud-
denly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Pass diagonally through sharp dips and avoid sharp
drops to prevent “hanging up” tractor and mower.
TRANSPORTING P990-3 MOWER
Either the standard ratchet adjustment link or optional
hydraulic cylinder and transport bar must be installed
when transporting mower.
A transport bar, to be used in conjunction with the
hydraulic cylinder, is furnished with each P990-3
mower. It must be installed when the optional hydraulic
cylinder is used to control cutting height.
Transport Bar Storage Position (Figure 6)
When not in use, the transport bar (3) should be piv-
oted to the rear, away from the cylinder, and the lock
pin should be installed in the hole and secured with
hairpin cotter (5).
Engaging Transport Bar (Figure 7)
Raise mower with hydraulic cylinder and pivot transport
bar (4) forward over cylinder rod (6). Install lock pin (3)
through hole in transport lock (7) and secure with hair-
pin cotter (2).
Figure 6. P990-3 Transport Bar - Operating Position
AWARNING
AWARNING
AWARNING
Operation 15
20944 (Rev. 2/3/2006)
Figure 7. P990-3 Transport Bar -
Raised Transport Position
Removing Mower from Tractor
Place tractor and mower on a solid level surface. Raise
mower and block securely.
Disengage PTO, set parking brake, stop engine and
remove key.
On pull-type units, place the jack on the tongue for
parking. Secure driveline up off the ground.
CLEANING
After Each Use
Remove large debris such as clumps of dirt, grass,
crop residue, etc. from machine.
Inspect machine and replace worn or damaged
parts.
Replace any safety decals that are missing or not
readable.
Periodically or Before Extended Storage
Clean large debris such as clumps of dirt, grass,
crop residue, etc. from machine.
Remove the remainder using a low-pressure water
spray.
1. Be careful when spraying near scratched or torn
safety decals or near edges of decals as water
spray can peel decal off surface.
2. Be careful when spraying near chipped or
scratched paint as water spray can lift paint.
3. If a pressure washer is used, follow the advice
of the pressure washer manufacturer.
Inspect machine and replace worn or damaged
parts.
Sand down scratches and the edges of areas of
missing paint and coat with Woods spray paint of
matching color (purchase from your Woods
dealer).
Replace any safety decals that are missing or not
readable (supplied free by your Woods dealer).
See Safety Decals section for location drawing.
16 Owner Service
20944 (Rev. 2/3/2006)
OWNER SERVICE
Before servicing, adjusting, repairing or unplug-
ging, stop tractor engine, place all controls in neu-
tral, set park brake, remove ignition key, and wait
for all moving parts to stop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Your dealer can supply original equipment
hydraulic accessories and repair parts. Substitute
parts may not meet original equipment specifica-
tions and may be dangerous.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
The information in this section is written for operators
who possess basic mechanical skills. Should you need
help, your dealer has trained service technicians avail-
able. For your protection, read and follow all safety
information in this manual.
BLOCKING METHODS
Jack stands, with a load rating of 1,000 pounds or
more, are the only approved blocking device for this
mower. A minimum of four jack stands, located under
the mower as shown in Figure 8, must be installed
before working underneath this unit. Do not position
jack stands under wheels, axles, or wheel supports
because these components can rotate.
Do not work underneath unless it is properly attached
to tractor (see Operation Section), the brakes set, key
removed, and the mower blocked securely. The
mounted unit will be anchored to minimize side to side
and front to rear movement. The pull-type unit will be
anchored front to rear.
For the mounted unit, tighten tractor lower 3-point arm
anti-sway mechanisms to prevent side to side move-
ment.
For the pull-type unit, raise mower with the standard
ratchet adjustment link or the optional hydraulic cylin-
der. When the optional hydraulic cylinder is installed
the standard equipment transport bar must be pinned
in the raised position. With either the ratchet adjust-
ment link or the optional hydraulic cylinder, lower
mower to transfer its weight to the jack stands, but do
not raise the rear wheels off of the ground.
When blocking, you must consider overall stability of
the unit. Just placing jack stands under the unit will not
ensure your safety. The working surface must be level
and solid to support the weight on the jack stands.
Ensure jack stands are stable both top and bottom, and
mower is approximately level. With full mower weight
lowered on jack stands, test blocking stability before
working underneath mower.
Figure 8. Jack Stand Placement
(Tractor and Connection Not Shown)
LUBRICATION INFORMATION (FIGURE 9)
Figure 9 shows the lubrication points. The accompany-
ing chart gives the frequency of lubrication in operating
hours, based on normal conditions. Severe or unusual
conditions may require more frequent lubrication.
Do not let excess grease collect on or around parts,
particularly when operating in sandy areas.
Use SAE 90W gear lube in gearbox. Check gearbox
daily for evidence of leakage at both seals and the gas-
ket between the housing and cover. If leakage is noted,
repair immediately. There may be a small amount of
lube emitted from the vent plug; this is not considered
leakage. Check the gearbox every day using the dip-
stick. Oil level is to be up to the ring but not over. Over-
filling the gearbox will cause the excess gear lube to
blow out vent plug. The gear lube could then ruin the
belt.
Use a lithium grease of No. 2 consistency with a MOLY
(molybdenum disulfide) additive for all locations. Be
sure to clean fittings thoroughly before attaching
grease gun. When applied according to the lubrication
chart, one good pump of most guns is sufficient. Do not
overgrease.
Daily lubrication of the driveline slip joint is necessary.
Failure to maintain proper lubrication can result in
AWARNING
ACAUTION
Owner Service 17
20944 (Rev. 2/3/2006)
damage to U-joints, gearbox, tractor PTO and/or the
mower driveline. Disconnect driveline from the tractor.
To lubricate driveline slip joint, insert a grease gun
through shield slots (keep fingers out of slots to prevent
injury) and apply grease to grease fitting. Move drive-
line in and out to distribute grease over the entire work-
ing area. Connect driveline to tractor.
Driveline shield bearings (12) must be greased every
eight hours. This operation requires a needle point
adapter for a grease gun. Insert the needle point into
the bearing hole and apply one good pump.
Figure 9. Lubrication Points
Ref No. Description Frequency
1 Front U-Joint 8 Hours
2 Rear U-Joint 8 Hours
3 Gearbox, Cover half of horizontal shaft
with SAE 90W gear lube
Check
Daily
4 Tailwheel Pivot Arm 8 Hours, Repack
5 Tailwheel (Mounted Model) 250 Hours
6 Slip Joint Zerk (Mounted Model) 8 Hours
7 Tailwheels (Towed Model) 10 Hours
8 Driveline Carrier Bearing (Towed
Model)
10 Hours
9 Slip Joint Zerk (Towed Model) 10 Hours
10 Center U-Joint (Towed Model) 10 Hours
11 Ratchet Adjustment Link 100 Hours
12 Shield Bearing 8 Hours
13 Left Blade Spindle 10 Hours
14 Center Blade Spindle 10 Hours
15 Right Blade Spindle 10 Hours
Ref No. Description Frequency
18 Owner Service
20944 (Rev. 2/3/2006)
Figure 10. Belt Installation
BELT REPLACEMENT (FIGURE 10)
One of the major causes of belt failure is improper
installation. Before a new belt is installed, check pulley
shafts and bearings for wear. Check pulley grooves for
cleanliness. Make sure spindles turn freely and without
wobble. If grooves require cleaning, use a cloth moist-
ened with a non-flammable, non-toxic degreasing
agent or commercial detergent and water.
Avoid excessive force during installation. Do not use
tools to pry belt into pulley groove. Do not roll belt over
pulleys to install. This can cause hidden damage and
premature belt failure.
NOTICE
Use care when installing or removing belt from
spring-loaded idler in step 6. Springs store energy
when extended and, if released suddenly, can
cause personal injury.
Belt replacement is accomplished in these steps:
1. Loosen nut and swing belt guide (G) away from
pulley (F).
2. Loosen nut on eyebolt (H) to relax tension in
spring.
3. Slide belt under and around drive pulley (A).
4. Route belt around pulley (F), idler (E) and pulley
(D) as shown.
5. Make sure belt is on drive pulley (A) and route belt
around spring-loaded idler (C).
6. Grasp belt between spindle pulley (B), spring-
loaded idler (C) and spindle pulley (D). Pull spring-
loaded idler with belt and route belt over pulley (B).
7. Tighten nut on eyebolt (H). Make sure spring-
loaded idler arm pivots freely with belt installed.
8. Set belt guide (G) 1/8" away from belt. Tighten to
85 lbs-ft.
SHEAR BOLT REPLACEMENT
NOTICE
Always use approved 1/2" NC x 3" grade 2
shear bolt as a replacement part. Using a hardened
bolt or shear pin may result in damage to driveline
or gearbox.
Rotate driveline to align holes in yoke and shaft. Install
shear bolt and secure with lock nut.
CHAIN OR RUBBER SHIELDING REPAIR
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
ADANGER
(Rev. 4/28/2006)
Owner Service 19
20944 (Rev. 2/3/2006)
Chain Shielding Repair
Inspect chain shielding each day of operation and
replace any broken or missing chains as required.
SIDE SKID REPAIR
Side skids are replaceable. Check them periodically
and replace as necessary.
Figure 11. Side Skid Repair
BLADE SERVICING
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
Make certain all movement of equipment com-
ponents has stopped before approaching for ser-
vice.
Low suction and general purpose suction blades are
available. Use low suction blades in sandy areas where
abrasive action could cause excessive blade wear.
General purpose suction blades are recommended for
all other applications.
Inspect blades before operation for condition and
ensure they are securely fastened. Replace blades that
are bent, excessively nicked, worn or have any other
damage. Small nicks may be ground out when sharp-
ening.
Replace blades on a spindle in pairs; an old blade and
a new blade may vary excessively in weight and cause
vibration. Never mix blade types.
Blade Sharpening
Follow the original sharpening pattern. Make an effort
to maintain balance on both blades from a spindle by
grinding the same amount from them. Blades that vary
excessively in weight can cause vibration.
Figure 12. Blade Sharpening
Blade Removal
This mower is equipped with quick change blades.
Open blade access cover, loosen bolt (5) and rotate
blade lock (4) to allow for removal of blade pin (3).
Remove blade (2). Rotate spindle and remove opposite
blade in same manner.
Blade Installation
Make sure to position blade so the cutting edge leads
in a counter-clockwise rotation. Install blade (2), then
place blade pin (3) in hole and rotate blade lock (4) to
secure blade. Tighten bolt (5). Rotate spindle and
install opposite blade in same manner. Repeat for
remaining spindles.
Figure 13. Blade Installation and Lock
WHEEL BEARING MAINTENANCE
RM990-3 ONLY
At least once each mowing season or 250 hours of
operation, whichever occurs first, the bearings in the
tailwheel should be removed, cleaned and repacked.
Replace bearings and cones if broken or worn exces-
sively.
Install the wheel in the wheel yoke and tighten the inner
nut until there is a slight bearing drag (similar to auto-
mobile wheels). Hold the inner nut and tighten the lock
nut against it to maintain bearing adjustment.
1. Side skid bar
2. 3/8 x 1-1/4" Clipped
head bolt
3. 3/8 " Lock washer
4. 3/8" Hex lock nut
ACAUTION
1. Blade spindle
2. Blade
3. Blade pin
4. Blade lock
5. 1/2 x 3/4" Nylock
bolt
(Rev. 4/28/2006)
20 Troubleshooting
20944 (Rev. 2/3/2006)
TROUBLESHOOTING
MOWING CONDITIONS
PROBLEM POSSIBLE CAUSE SOLUTION
Grass cut higher in center of swath
than at edge
Height of mower higher at rear
than at front
Adjust mower height and attitude
so that mower rear and front are
within 1/2" of same height.
Grass cut lower in center swath
than at edge
Height of mower lower at rear than
at front
Adjust mower height and attitude
so that mower rear and front are
1/2" of same height.
Streaking conditions in swath Conditions too wet for mowing Allow grass to dry before mowing.
Blades unable to cut that part of
grass pressed down by path of
tractor tires
Slow ground speed of tractor but
keep engine running at full PTO
rpm.
Dull blades Sharpen or replace blades.
Material discharge from mower
unevenly; bunches of material
along swath
Material too high and too much
material
Reduce ground speed but main-
tain 540 rpm at tractor PTO, or
make two passes over material.
Raise mower for the first pass and
lower to desired height for the sec-
ond and cut at 90° to first pass.
Raise rear of mower high enough
to permit material to discharge, but
not so high that conditions listed
above occur.
Grass wet Allow grass to dry before mowing.
Slow ground speed of tractor but
keep engine running at full PTO
rpm.
Rear of mower too low, trapping
material under mower
Adjust mower height and attitude.
Troubleshooting 21
20944 (Rev. 2/3/2006)
TROUBLESHOOTING
BELT CONDITIONS
PROBLEM POSSIBLE CAUSE SOLUTION
Belt slippage Mower overloading; material too
tall or heavy
Reduce tractor ground speed but
maintain full PTO rpm. Cut mate-
rial twice, one high pass and then
mow at desired height. Cut a par-
tial swath.
Oil on belt from over lubrication Be careful not to over lubricate,
clean lubricant from belt and pul-
leys with clean rag, replace oil-
soaked belt.
Belt hung up or rubbing Check belt for free travel in pulleys
and belt guides, check under
mower and around blade spindle
shafts for wire, rags, or other for-
eign materials; clean all materials
from under mower.
Frayed edges on cover Belt misaligned or belt rubbing
guide
Re-align belt or guide, be sure belt
does not rub any other part while
running.
Pulley misalignment Inspect to ensure belt is running in
center of backside idler, shim idler
as necessary to align.
Belt rollover Pulley misalignment Re-align.
Damaged belt *Replace belt.
Foreign object in pulley grooves Inspect all pulley grooves for rust,
paint or weld spots and remove.
Worn pulley groove Replace pulley.
Damaged belt Rollover, high shock loads or
installation damage
*Replace belt.
Belt breakage High shock loads Avoid abusive mowing, avoid hit-
ting the ground or large obstruc-
tions.
Belt came off drive Check drive pulley for foreign
material in grooves, avoid hitting
solid objects or ground.
* Check belt for damage by laying it flat on the floor. If belt does not lie flat (has humps or twists), which indicates
broken or stretched cords, it must be replaced.
22 Dealer Service
20944 (Rev. 2/3/2006)
DEALER SERVICE
The information in this section is written for dealer ser-
vice personnel. The repairs described require special
skills and tools. If your shop is not properly equipped or
your mechanics are not properly trained in this type of
repair, you may be time and money ahead to replace
complete assemblies.
Before servicing, adjusting, repairing or unplug-
ging, stop tractor engine, place all controls in neu-
tral, set park brake, remove ignition key, and wait
for all moving parts to stop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Make certain all movement of equipment com-
ponents has stopped before approaching for ser-
vice.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
BLOCKING METHODS
Jack stands, with a load rating of 1,000 pounds or
more, are the only approved blocking device for this
mower. A minimum of four jack stands, located under
the mower as shown in Figure 14, must be installed
before working underneath this unit. Do not position
jack stands under wheels, axles, or wheel supports
because these components can rotate.
Do not work underneath unless it is properly attached
to tractor (see Operation Section), the brakes set, key
removed, and the mower blocked securely. The
mounted unit will be anchored to minimize side to side
and front to rear movement. The pull-type unit will be
anchored front to rear.
For the mounted unit, tighten tractor lower 3-point arm
anti-sway mechanisms to prevent side to side move-
ment.
For the pull-type unit, raise mower with the standard
ratchet adjustment link or the optional hydraulic cylin-
der. When the optional hydraulic cylinder is installed
the standard equipment transport bar must be pinned
in the raised position. With either the ratchet adjust-
ment link or the optional hydraulic cylinder, lower the
mower to transfer its weight to the jack stands, but do
not raise the rear wheels off of the ground.
When blocking, you must consider overall stability of
the unit. Just placing jack stands under the unit will not
ensure your safety. The working surface must be level
and solid to support the weight on the jacks stands.
Ensure jack stands are stable both top and bottom, and
mower is approximately level. With full mower weight
lowered on jack stands, test blocking stability before
working underneath mower.
Figure 14. Jack Stand Placement
(Tractor and Connection Not Shown)
BLADE SPINDLE
Blade Spindle Repair Tips
As a reference point, the grease fitting is in the top por-
tion of the spindle housing.
To minimize wear, the bearing cups, cones and sleeves
are press fit to the shaft and will require a press or sim-
ilar device for removal.
When disassembling, support housing casting to pre-
vent damage.
Remove bearing cups by placing a punch in housing
slots and driving cup out. Alternate punch positions
from side to side. Use care to prevent housing dam-
age.
Permatex 3-D Aviation Form-A-Gasket® or equivalent
is recommended as a sealant for spindle repair.
Blade Spindle Removal
Remove belt. Remove blades from spindle. Remove
bolt and washer from top of spindle shaft.
Remove split taper bushing (located on top of pulley)
by removing the two bolts and inserting them into the
threaded holes in bushing flange. Tighten alternately to
remove split taper bushing.
AWARNING
ACAUTION
Dealer Service 23
20944 (Rev. 2/3/2006)
Remove key and pulley. Remove the four bolts and
nuts attaching spindle to mower frame and remove
spindle.
Store bushing, pulley and all hardware for reinstalla-
tion.
Figure 15. Blade Spindle Assembly
Blade Spindle Disassembly
Support housing and press blade carrier and shaft (9)
out. Remove seals, bearing cones and cups from hous-
ing. See Figure 15.
Blade Spindle Assembly
Bearing cups and cones are designed to work together.
It is important to position them so bearing cone taper
mates with bearing cup taper. See Figure 15.
Lubricate new cups (6) with a light oil. Place them in
spindle housing (5) so they will mate with cones (4).
Seat cups (6) against machined shoulder of housing
with a press or by placing a large soft drift on the flat lip
and driving them into housing.
Pack bottom bearing cone (4) with grease and place it
into housing against bearing cup (6).
NOTICE
Bearing failure is often a result of improper seal
installation and positioning. Follow instructions
carefully.
Lightly coat housing area where seals seat with Perma-
tex or equivalent.
Lightly lubricate seal, locate spring and place seal
squarely on housing with spring toward housing center.
Select a pipe or tubing with an outside diameter that
will set on outside seal edge. One that is too small will
bow seal cage.
Carefully press seal into housing, preventing distortion
to metal seal cage. Seal should seat firmly and
squarely against machined housing shoulder.
Make sure seal lip did not roll under.
Distortion to seal cage or seal lip damage will cause
leakage. Damaged seals must be replaced.
Place housing assembly over shaft and blade center
(9) and carefully guide over shaft while pressing shaft
into bearing cup and cone. Assembly should seat firmly
against step in shaft.
Fill housing cavity with a lithium grease of No. 2 consis-
tency with a MOLY (molybdenum disulfide) additive.
Pack top bearing cone (4) with grease and place it
(taper down) on shaft. Place sleeve (2) on shaft and
press bearing onto shaft until free play is removed and
there is a slight drag (similar to adjusting automobile
wheel bearings). Check by turning housing on shaft; it
should turn freely.
NOTICE
Bearing adjustment is set by pressing sleeve
against bearing until proper adjustment is attained.
Adjustment is maintained by seating split taper
bushing against sleeve.
Adjusting bearings too tightly will shorten their life.
Should you overtighten them, hold housing and rap top
of shaft with a lead hammer to loosen bearings. Adjust
to obtain proper setting.
1. Blade Spindle Complete
2. Sleeve
3. Seal
4. Bearing Cone
5. Spindle Housing with Cups
6. Bearing Cup
7. Grease Fitting
8. Flat Washer
9. Spindle Shaft and Crossbar
10. Blade Lock
11. QD Blade Pin
12. 1/2 x 3/4" Nylock Bolt
13. Blade
24 Dealer Service
20944 (Rev. 2/3/2006)
Proper bearing adjustment is essential to good bearing
life.
Lightly lubricate top seal, locate spring and place seal
squarely on housing with spring up away from housing.
Follow installation instructions given for bottom seal.
Top seal should be flush with, to 1/16" above, housing.
Blade Spindle Installation
Insert spindle through bottom of mower, positioning
grease fitting outward on outer spindles and to the rear
on center spindle. Secure to deck with four bolts and
flange lock nuts.
Place belt pulley over spindle shaft and seat split taper
bushing against spindle sleeve. Place flat washer and
bolt into threads of spindle shaft and torque to 35 lbs-ft.
Place split taper bushing bolts into threaded holes of
pulley and tighten alternately to 12 lbs-ft., securing pul-
ley to bushing.
Reinstall blades and belt.
WHEEL SPINDLE REPAIR
(For Pull-Type Mowers Only)
Wheel spindle repair is accomplished in a manner sim-
ilar to blade spindle repair. Refer to the wheel spindle
parts list and apply the repair techniques outlined in
Blade Spindle Disassembly and Assembly (page 23).
Adjustment is set and maintained with the slotted hex
nut and cotter key.
UNIVERSAL JOINT REPAIR
Two different style driveline U-joints are used. The
repair procedure is basically the same. One has inter-
nal snap rings (Figure 16); the other has external snap
rings (Figure 17). Determine which type you are repair-
ing and remove all four snap rings.
Figure 16. U-Joint Exploded View
with Internal Snap Rings
Figure 17. U-Joint Exploded View
with External Snap Rings
1. Yoke
2. Journal Cross
3. Seal
4. Snap Ring
5. Cup and Bearings
6. Yoke
1. Yoke
2. Cup and Bearing
3. Snap Ring
4. Journal Cross
Dealer Service 25
20944 (Rev. 2/3/2006)
U-Joint Disassembly
1. Remove snap rings from inside or outside of yokes
in four locations. (Figure 18 only shows the style
with internal snap rings.)
Figure 18.
2. With snap rings removed, support drive in vise,
hold yoke in hand and tap on yoke to drive cup up
out of yoke. See Figure 19.
Figure 19
3. Clamp cup in vise as shown in Figure 20 and tap
on yoke to completely remove cup from yoke.
Repeat steps two and three for opposite cup.
Figure 20.
4. Place universal cross in vise as shown in Figure 21
and tap on yoke to remove cup. Repeat step three
for final removal. Drive remaining cup out with a
drift and hammer.
Figure 21.
26 Dealer Service
20944 (Rev. 2/3/2006)
U-Joint Assembly
1. Place seals securely on bearing cups (on internal
snap ring style only).
Insert cup into yoke from outside and press in with
hand pressure as far as possible. Insert journal
cross into bearing cup with grease fitting away from
shaft. Be careful not to disturb needle bearings.
Insert another bearing cup directly across from first
cup and press in as far as possible with hand pres-
sure.
Trap cups in vise and apply pressure. Be sure jour-
nal cross is started into bearings and continue
pressure with vise, squeezing in as far as possible.
Tap yoke to aid in process.
2. Seat cups by placing a drift or socket (slightly
smaller than the cup) on cup and rapping with a
hammer. See Figure 22. Install snap ring and
repeat on opposite cup.
3. Repeat steps one and two to install remaining cups
in remaining yoke.
Move both yokes in all directions to check for free
movement. Should movement be restricted, rap on
yokes sharply with a hammer to relieve any ten-
sion. Repeat until both yokes move in all directions
without restriction.
Figure 22.
GEARBOX MAINTENANCE
Read all of this section before starting any repair. Many
steps are dependent on each other.
Check gearbox for leakage and shaft side and end
play. If excessive shaft play is found, disassemble
gearbox and inspect bearings and shafts.
Leakage can occur at top cover and at shaft seals.
Leakage problems should be corrected immediately to
prevent damage to drive belt from gearbox oil.
Always clean any spilled lubricant with a cloth moist-
ened with a non-flammable, non-toxic degreasing
agent or commercial detergent and water. Be sure to
clean pulley grooves.
The sealants recommended for gearbox repair are Per-
matex Aviation 3D Form-A-Gasket® or Loctite 515
Gasket Eliminator®.
Leakage Repair
To repair top cover leakage, clean top cover and hous-
ing sides, then remove cover. Remove old sealant from
cover and housing.
Apply sealant to top cover and replace. Retorque hous-
ing bolts.
Horizontal seal leakage should be repaired by replac-
ing the seal. The gearbox should be removed from the
mower to accomplish this. Remove old seal with care
to prevent damage to seal bore and shaft. Sealant
should be applied to the seal bore before installing the
new seal. The new seal should be seated squarely in
the bore against snap ring. Press seal into place with a
piece of pipe or tubing that sets against the outside
edge of the seal. Tubing with an outside diameter that
is too small will bow seal cage and ruin the seal.
Removing Gearbox from Mower
Remove belt and driveline shields.
Remove rear driveline shield bearings and remove
shield. Remove snap ring from gearbox shaft. Remove
shear bolt from end yoke and remove driveline.
Remove drive belt from drive sheave.
Remove gear stand from mower.
Remove drive sheave from mower by removing bolts
from split taper bushing and turning them into threaded
holes on bushing flange. Tighten evenly, forcing the
bushing and drive sheave apart.
Remove gearbox from gear stand.
Gearbox Disassembly
(S/N 788882 and prior, Figure 23)
NOTE: A five ton press will be required for vertical gear
shaft removal.
Remove top cover (12) and drain all gear lube.
Clamp gearbox upside-down in a large vise. Place a
long 1/2" rod or punch through the horizontal shaft
shear bolt hole to prevent shaft rotation. Remove stake
Dealer Service 27
20944 (Rev. 2/3/2006)
nut (19). If nut is too tight to remove with a spanner
wrench, loosen with a punch and hammer.
Carefully remove vertical shaft seal (18) to prevent
damage to shaft threads and seal bore.
Remove gearbox from vise. Use care when removing
horizontal shaft seal (1) and retaining ring (2) to pre-
vent damage to shaft seal surface and housing bore.
Place puller (20) over horizontal shaft (6) and insert a
1/2" bolt or rod through horizontal shaft shear bolt hole.
Tighten puller bolts evenly to remove shaft from hous-
ing.
Place housing upside-down in a press and remove ver-
tical shaft (14) by pressing through the top of the hous-
ing. Remove bearing cone (15) from vertical shaft (14)
with a spreader. Remove all cups from housing with a
puller or by carefully driving them out with a punch.
Inspect gears for excessive wear. Gears are forged
and surfaces will appear rough, even when new. Some
wear is normal. Gears will show more wear on the
loaded side and the pattern should be smooth.
Inspect both gear shafts and stake nut for grooves,
nicks or bumps where seals seat. Replace if damage
cannot be repaired by resurfacing with emery cloth.
Clean gearbox housing and inspect for damage.
Replace if cracks are found.
Gearbox Assembly
(S/N 788882 and prior, Figure 23)
Press cups (8 & 16) into housing until they seat tightly
against machined shoulders.
Press bearing cone (15) onto vertical gear shaft (14)
and seat it against gear.
Insert vertical gear shaft into housing. Invert housing in
a press and place supports under gear to hold bearing
cone (15) against cup (16). Press bottom bearing cone
(15) onto shaft until all free play is removed and there is
a slight drag when rotating housing on shaft (similar to
setting automobile front wheel bearings). If bearings
are too tight, loosen by holding housing and rapping on
end of vertical gear shaft (14) with a shot hammer or
equivalent.
Install O-ring (17) into groove on vertical gear shaft (14)
next to bearing cone (15). Place a small bead of gasket
sealer on top of O-ring.
Use the proper size tubing to press against the outside
edge of seal to prevent seal damage. Apply gasket
sealant to seal bore and press output shaft seal (18)
into housing until it seats against housing shoulder.
Coat inner portion of seal with grease.
Thread stake nut (19) onto shaft (14) in through seal
(18). Tighten until nut is snug against bearing cone
(15). Use a punch to stake the lip of stake nut (19) into
shaft (14) keyway.
Insert shaft (6) through top of housing out through hori-
zontal hole, then set bearing (7) into cup (8). Press
bearing (5) onto gear shaft (6). Do not use excessive
force to seat bearing.
Place bearing cup (4) over horizontal shaft (6) and
press into housing until there is a slight drag on bear-
ings when shaft is rotated (similar to setting automobile
front wheel bearings). When you have bearings
adjusted, select shims from shim kit (3) and place on
top of bearing cup (4) until they are flush with bottom of
snap ring groove in horizontal shaft (6), then install
snap ring (2).
Apply gasket sealant to housing seal bore and press
seal (1) into housing until it seats against snap ring or is
flush with housing.
Apply gasket sealant to top of housing flange, replace
top cover and secure with bolts (10) and washers (9).
Attach gearbox to gear stand and torque mounting
bolts.
Remove the dipstick and pour in one quart of gear
lube. Wait five minutes and add an additional pint and
one half. Allow an additional five minutes for the lube to
flow through the bearings, then check to make sure
half of the horizontal gear shaft is covered. Replace the
dipstick.
28 Dealer Service
20944 (Rev. 2/3/2006)
Figure 23. Gearbox Assembly (SN 788882 and Prior)
Gearbox Disassembly
(Units after S/N 788882, Figure 24)
Remove gearbox from cutter as follows: Disconnect
and remove the rear driveline from the gearbox.
Remove vent plug (27) and siphon gear lube from
housing through this opening. Remove cotter pin,
washer, and nut from vertical shaft and remove cross-
bar. Remove the four bolts that hold the gearbox on the
cutter.
Remove 3/8" plug from side of gearbox and pour out
gear oil.
Remove oil cap (23) (to be replaced), snap ring (12),
and shim (15) from input shaft (3).
Support gearbox in hand press and push on the input
shaft (3) to remove bearing (9) and spacer (14).
Remove top cover (25) from housing and gear (1) from
inside housing.
Remove oil seal (22) from front of housing (to be
replaced). Remove snap ring (12) and shim (15) from
front of housing.
Support housing in vise in a horizontal position. The
castle nut (17), cotter pin (28), washer (18), and hub
(24) are already removed with the stump jumper/cross-
bar. Remove the snap ring (10), washer (19), and seal
(21).
Remove cotter pin (11), castle nut (16), and washer
(20) from output shaft (4). Remove output shaft by
using a punch and hammer; tap on the top to drive
down.
Remove gear (5) and shim (15) from inside housing.
Remove bearing (7) by using a punch and hammer
1. 1.38 x 2.56 x .38" Seal
2. Retaining ring
3. Shim washer kit
4. Bearing cup
5. Bearing cone
6. 30-Tooth gear and horizontal shaft
7. Bearing cone
8. Bearing cup
9. 3/8" Lock washer
10. 3/8 x 3/4" Bolt
11. 1" Vented pipe plug (used prior to S/N 2000)
12. Gearbox cover
13. Housing
14. 17-Tooth gear and vertical shaft
15. Bearing cone
16. Bearing cup
17. O-Ring
18. Double lip seal
19. Stake nut
20. Puller
21. Puller bolts
22. Dipstick (used on SN 2000-788882)
23. O-Ring (used on SN 2000-7888882)
Dealer Service 29
20944 (Rev. 2/3/2006)
from the top, outside the housing. Support housing
upside down (top cover surface) and remove bearing
(6) by using a punch and hammer from the bottom side
of the housing.
Inspect gears for broken teeth and wear. Some wear is
normal and will show on loaded side. Forged gear sur-
faces are rough when new. Check that wear pattern is
smooth.
Inspect vertical and horizontal shafts for grooves,
nicks, or bumps in the areas where the seals seat.
Resurface any damage with emery cloth. Inspect hous-
ing and caps for cracks or other damage.
Figure 24. Gearbox Assembly (After SN 788882)
Gearbox Assembly
(Units after SN 788882, Figure 24)
NOTE: Repair of this gearbox is limited to replacing
bearings, seals, and gaskets. Replacing gears, shafts,
and a housing is not cost effective. Purchasing a com-
plete gearbox is more economical.
Clean housing, paying specific attention to the areas
where gaskets will be installed. Wash housing and all
components thoroughly. Select a clean area for gear-
box assembly. Replace all seals, bearings, and gas-
kets. All parts must be clean and lightly oiled before
reassembling.
Insert output bearings (6 & 7) in the housing, using a
round tube of the correct diameter and a hand press.
Slide output shaft (4) through both bearings (6 & 7)
until it rests against bearing (6). Slide shim (15) over
output shaft (4). Press gear (5) onto output shaft (4)
and secure with washer (20), castle nut (16), and cotter
pin (11).
Apply grease to lower seal lips (21) and press seal (21)
over output shaft (4), using a tube of the correct diame-
ter. Be sure not to damage the seal lip. Press in hous-
ing so that seal is recessed. Insert protective washer
(19) by hand. Install snap ring (10) and position it
1. Crown gear
2. Gearbox housing
3. Input shaft
4. Output shaft
5. Gear pinion
6. Bearing cup & cone
7. Bearing cup & cone
8. Bearing cup & cone
9. Ball bearing
10. Internal retainer ring
11. Cotter pin
12. Snap ring
13. Snap ring
14. Spacer
15. Shim kit
16. Castle nut
17. Castle nut metric M24 x 2
18. Protective washer
19. 21 x 37 x 3 Washer
20. 25 x 48 x 2.5 Washer
21. Metric seal 40 x 80 x 12
22. Oil seal
23. Oil cap
25. Top cover
26. M8 x 16 Bolt
27. Vented plug
30 Dealer Service
20944 (Rev. 2/3/2006)
together with dual lip seal (21) by pressing into posi-
tion. Verify that snap ring is seated correctly.
Press bearing (8) into the housing, using a round tube
of the correct diameter and a hand press. Secure with
shim (15) and snap ring (12). Secure snap ring (13) on
input shaft (3) if not already secure.
Place gear (1) through top of housing and align gear
(1) and gear (5) so that gear teeth are a match. While
holding gear (1) in place, slide input shaft (3) through
gear (1) and bearing (8). Align splines on shaft (3) and
gear (1).
Slide spacer (14) over input shaft (3) and press bearing
onto input shaft (3), using a round tube of the correct
diameter and a hand press. Slide shim (15) over input
shaft (3) and secure with snap ring (12).
Check input shaft end float by moving the input shaft
(3) by hand. If end float is higher than 0.012", insert
shim between input shaft (3) and rear bearing (8).
Repeat until end float is less than 0.012". Check rota-
tional torque by hand. The torque should be less than
2.2 lbs.-inch. Check that the gear backlash is between
0.006" and 0.016". You should not have to adjust the
backlash.
Press in input oil seal (22), using a tube of the correct
diameter. Be careful not to damage the seal lip. Press
oil cap (23) on to cover the rear of housing, using a
tube of the correct diameter.
Check gearbox housing for leaks by plugging all holes
except one. Apply 4 psi compressed air and immerse
the gearbox in water to verify that there are no leaks.
Remove gearbox from water and dry off with com-
pressed air. Add SAE 80W or 90W EP oil until it runs
out of side level hole. Tighten all plugs.
Drive Pulley Installation
Invert gear stand.
Install drive pulley and split taper bushing with key on
gearbox vertical shaft.
The distance between the centerline of the lower pulley
and the bottom of the gear stand is critical. Place a
straightedge along the bottom of the gear stand and
measure from it to the centerline of the pulley. This
measurement should be 2.35", plus or minus .03". Vari-
ation from this dimension could cause belt misalign-
ment and premature belt failure. See Figure 25.
Tighten the bolts in the split taper bushing alternately
until they are torqued to 12 lbs-ft. Check the dimension
when tightening is complete; remove and realign if the
dimension was not held.
Install the gear stand on the mower frame.
Install the belts, driveline and driveline shielding.
Figure 25. Drive Pulley Installation
Assembly 31
20944 (Rev. 2/3/2006)
ASSEMBLY
Before working underneath, raise mower to
highest position and block securely. Blocking up
prevents mower dropping due to hydraulic leak
down, hydraulic system failures, or mechanical
component failures.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
DEALER SET-UP INSTRUCTIONS
Assembly of the mower is the responsibility of the
WOODS dealer. It should be delivered to the owner
completely assembled, lubricated, and adjusted for
normal conditions.
The following instructions apply to the assembly of both
the RM990-3 and the P990-3, unless otherwise noted.
Complete the checklists on page 40 when assembly is
complete.
NOTICE
Gearbox was not filled at factory. It must be
serviced before operating mower. Failure to service
will result in damage to the gearbox. See page 16.
The mower is shipped partially assembled. Assembly
will be easier if the components are aligned and loosely
assembled before tightening hardware. Recommended
torque values for hardware are located on page 67.
Select a suitable working area. Open parts boxes and
lay out parts and hardware to make location easy.
Refer to illustrations, accompanying text, parts lists and
exploded view drawings.
Rear Driveline Installation
RM990 Only
Attach counter-cone shield (6) over gearbox output
shield (7) using four 5/16" cap screws (3) OR M8 cap
screws (4) and lock washers (5). See Figure 26.
Attach implement end of driveline (1) to gearbox output
shield (7).
Fasten tether chain to bracket (8) as shown, securing
with left front gearbox mounting bolt. Chain must be
loose enough to allow full joint articulation.
Figure 26. Rear Driveline Installation - RM990
AWARNING
ACAUTION
1. Driveline
2. Shield Retainer
3. Screw, HHCS 5/16" x 3/4
4. Screw, HHCS M8 x 1.25 x 20
5. Washer, 5/16" Standard
6. Counter-Cone Shield
7. Gearbox Output Shield
8. Tether Chain Bracket
32 Assembly
20944 (Rev. 2/3/2006)
Figure 27. Rear Driveline Installation - P990
P990 Only
Remove drive shield (1) from the driveline. Place the
yoke horizontally in a vise. Firmly pull shield backward
while pushing each of the three bearing tabs down to
release them. See Figure 27.
To prevent gearbox seal damage, carefully push drive-
line yoke onto gearbox input shaft until it contacts the
housing. Install retaining ring (3) and pull driveline for-
ward.
Align driveline yoke and gearbox input shaft holes and
install shear bolt (5). Then install and tighten nut (4).
Install drive shield (1) by aligning the three shield holes
with the three bearing tabs and pushing shield on firmly
to ensure the bearing tabs all engage.
Remove both front gearbox top cover bolts and lock
washers (10 & 11). Place left and right drive shield
brackets (7 & 9) on gearbox top cover and secure with
bolts and lock washers (10 & 11). Attach gearbox
shield (8) to shield brackets with flanged nuts (12).
Fasten tether chain (13) loosely (allowing greatest joint
articulation) to bracket (14) on left front gearbox mount-
ing bolt.
1. Rear drive shield
2. Driveline
3. Retaining ring (SN 788882 and prior)
4. 1/2" Hex lock nut (SN 788882 and prior)
5. 1/2 x 3" Shear bolt (SN 788882 and prior)
6. Gearbox input shaft
7. Left drive shield bracket
8. Gearbox shield
9. Right drive shield bracket
10. 3/8 x 1" Bolt (SN 788882 and prior)
10. M8 x 1.25 x 25 Bolt (after SN 788882)
11. 3/8" Lock washer
12. 3/8" Flanged nut
13. Tether chain
14. Tether chain bracket
Assembly 33
20944 (Rev. 2/3/2006)
Figure 28. RM990-3 Hitch Installation
RM990-3 HITCH INSTALLATION
(Figure 28)
The RM990-3 is shipped with Category 1 hitch pins in
the shipping location. Remove bolt (1) and hitch pin
bracket (4). Remove the hitch pin (6) from the shipping
location and place it in the end hole. Insert the hitch pin
bracket (4) into the mast plate as shown. Slide sleeve
(3) through holes flush with outside of mast plate and
secure with bolt (1), washers (2), and hex lock nut.
Repeat for other side.
Remove bolt (8) and assemble 3-point brace bars (9)
on outside of A-frame bars (5). Re-install bolt (8)
through bars, spacer and top-link clevis (11).
Tighten all hitch assembly hardware. (See torque chart
in Operator’s Manual.)
Install PTO hanger bracket (13) to upper mast assem-
bly. Secure with flange lock nut (12). Do not over-
tighten lock nut. PTO hanger bracket should be able to
rotate freely out of the way when the mower is in oper-
ation.
13
1. 5/8 x 3-1/2" Bolt
2. 5/8" Flat washer
3. .64 x 1.00 x 2.09" Sleeve
4. Hitch pin bracket
5. A-frame bar
6. Category 1 mounting pin
7. 5/8" Hex nut
8. 1/2 x 6" Bolt
9. 3-Point brace bar
10. 1/2 Schedule 40 x 2-3/4" pipe
11. Top link clevis
12. 1/2" Flanged hex lock nut
13. PTO Hanger bracket
34 Assembly
20944 (Rev. 2/3/2006)
Figure 29. P990-3 Wheel Yoke Installation
P990-3 Wheel Yoke Installation
Remove tongue from wheel yoke. See Figure 29.
Loosen the nuts on bolts (8) and pivot the wheel yoke
(1) to the rear. Install bolt (8) in each mounting bracket
and flat washers (10), secure nut (9). Tighten the hard-
ware.
P990-3 Attitude Rod and Height Adj. Installation
Place sleeve (4) between attitude rod lugs on wheel
yoke. Insert pin (3) through sleeve (4) and align the
holes. Insert attitude rod (2) through these holes. See
Figure 29.
Place pipe spacer (5) over attitude rod (2) and start
lock nut (6) on rod.
P990-3 Tongue & H-Frame Installation
Place washer (17) and sleeve (18) on bolt (16). See
Figure 30.
Place tongue assembly (1) into mast plates on mower
frame and insert bolt, washer and sleeve assembly to
hold in place. Repeat for opposite side.
Place an additional washer (17) on bolt (16), then a
lock washer (19) and nut (20). Repeat for opposite side
and tighten hardware.
Attach parking jack (21) to tongue (1) as shown.
Install ratchet adjustment link (7) between the tongue
and height adjustment post on wheel yoke using pins
provided with adjustment link. The optional hydraulic
cylinder may be installed in place of the adjustment link
(7).
Connect attitude rod (5) to tongue (1), as shown, with
clevis pin (15) and cotter pin (6).
Attach H-frame (2) to tongue (1), as shown, with clevis
pin (7) and two cotter pins (6).
Apply grease to all sides of rear driveline and slide the
rear portion of the front driveline (25) onto it.
Attach carrier bearing housing (3) into a set of H-frame
adjustment holes with clevis pin (8) and cotter pin (6).
Final adjustment will be required when mower is
attached to tractor.
Attach front drive shield (4) to carrier bearing housing
(3) with bolts (13) and lock washers (14).
Place spacer (11) between H-frame as shown and
secure with bolt (12), lock washer (10) and nut (9).
Attach driveline shield tether chains (23 & 24) to H-
frame (2). Front tether chain (22) will be attached to
tractor.
1. Wheel yoke assembly
2. Attitude rod
3. 1-1/4 x 3-1/4" Pin
4. 1-5/16 x 1-3/4 x 2-1/8" Sleeve
5. 3/4 x 3/4" Pipe
6. 3/4" Lock nut
7. Ratchet
8. 5/8 x 2" Bolt
9. 5/8 Hex lock nut GR5
10. 5/8 Flat washer
Assembly 35
20944 (Rev. 2/3/2006)
Figure 30. P990-3 Tongue & H-Frame Installation
1. Tongue assembly
2. H-Frame
3. Carrier bearing housing
4. Drive shield
5. Attitude rod
6. 3/16 x 1" Cotter pin
7. 5/8 x 5-21/32" Clevis pin
8. 1/2 x 5-3/4" Clevis pin
9. 1/2" Heavy hex nut
10. 1/2" Heavy lock washer
11. 1/2 x 3-9/16" Pipe
12. 1/2 x 5-1/2" Bolt
13. 3/8 x 1" Bolt
14. 3/8" Lock washer
15. 5/8 x 2-1/4" Clevis pin
16. 5/8 x 3-1/2" Bolt
17. 5/8" Flat washer
18. .64 x 1 x 2" Sleeve
19. 5/8" Lock washer
20. 5/8" Hex nut
21. Parking jack
22. Front tether chain
23. Middle tether chain
24. Rear tether chain
25. Driveline
36 Assembly
20944 (Rev. 2/3/2006)
Figure 31. Chain Shielding Installation
Chain Shielding Installation
Chain shielding is assembled. Attach to mower as
shown. See Figure 31.
OPTIONAL EQUIPMENT INSTALLATION
Optional Hydraulic Cylinder and Standard
Transport Bar Installation for P990-3
Your dealer can supply original equipment
hydraulic accessories and repair parts. Substitute
parts may not meet original equipment specifica-
tions and may be dangerous.
The transport bar, which is shipped as standard equip-
ment, must be installed when the optional hydraulic cyl-
inder is used to replace the ratchet adjustment link. Do
not operate mower unless either the ratchet adjustment
link or the optional hydraulic cylinder and transport bar
is installed.
Install cylinder rod clevis over wheel yoke height
adjustment lug and insert clevis pin (3). Place a flat
washer (5) over each end of clevis pin. Place transport
bar (2) over clevis pin (3) on right side of cylinder cle-
vis, then place another flat washer (5) over pin and
secure with cotter pins (4) in each end of clevis pin.
Attach butt end of cylinder to tongue with clevis pin and
retainer clips provided with cylinder.
To engage transport bar, raise mower to the highest
position and pivot the transport bar over the hydraulic
cylinder rod. Install lock pin through transport bar cle-
vis, beneath hydraulic cylinder rod.
1. Right rear shield assembly
2. Left rear shield assembly
3. 3/8 x 1" Carriage bolt
4. 3/8" Flanged hex lock nut
5. Left front shield assembly
6. Right front shield assembly
ACAUTION
Assembly 37
20944 (Rev. 2/3/2006)
Figure 32. Optional Hydraulic Cylinder Installation for P990-3
Front Gauge Roller Installation for
RM990-3 and P990-3 (Figure 33)
Optional front gauge rollers are designed to carry front
corners of the mower over uneven ground, minimizing
gouging and scalping.
Front gauge roller mounting points are provided on
both front mower frame corners. The gauge roller and
mounting bracket are pre-assembled.
Attach the gauge roller assembly (1) to corner of
mower frame by installing carriage bolts (3) from inside
the mower frame as shown. Secure with flange lock
nuts (2).
Repeat for opposite gauge roller.
Figure 33. Optional Front Gauge Roller Installation
1. 3-1/2 x 8" Single-acting hydraulic cylinder
2. Transport bar
3. Lock-up pin
4. 1/4 x 1-3/4" Cotter pin
5. 1 x 2" x 10 GA Flat washer
6. 3/16" Safety pin
1. Front gauge roller assembly
2. 1/2" Flanged hex lock nut
3. 1/2 x 1-1/4" Carriage bolt
38 Assembly
20944 (Rev. 2/3/2006)
Optional Front Roller Installation for
RM990-3 and P990-3
The optional front roller is designed to carry the center
of the mower over uneven ground, minimizing scalping.
Front roller mounting brackets use the four mounting
bolts of the gear stand.
Remove the gear stand front mounting bolts. Hole pat-
terns in the mounting brackets (1 & 2) determine right
and left. Position these brackets with the highest hole
to the rear, the middle hole forward, and the bracket
angle outward as shown.
Attach brackets with the carriage bolts (3) and flange
lock nuts (7) provided with the front roller kit.
Place roller (5) between the brackets and insert rod (6)
through brackets and roller, securing with cotter pins
(4).
Figure 34. Optional Front Roller Installation
Quick Hitch Kit Installation (Optional)
Figure 35. Quick Hitch Kit Assembly
(RM660 Shown; Other units use same instructions)
Note: This kit allows mower to fit only Cat. 1 standard
ASAE quick hitch.
Attach offset link (1) to mounting pins, using 7/8 sleeve
(8) and flat washer (9). Attach upper end of offset link
to pivot link, using 1/2 flat washer (5), sleeves (6 & 10),
flange lock nut (7), and 1/2 x 4-3/4 cap screw.
Remove rear offset links and replace with chains (2).
Cut to required length. Attach chain to top of A-frame
as shown, using 1/2 x 6 cap screw (4), 1/2 flat washer
(5), and nut.
Attach opposite end of chain (2) to rear mower frame
as shown. Cut chain to 45 inches in length. Vary length
slightly as desired. Twist chain to make finite adjust-
ments in length until unit lifts level. Do not bottom out
the drive on front of deck.
NOTICE
Failure to follow instructions may result in
damage.
Install sleeve (3) on mounting pins and retain with Klik
pin.
1. Right bracket
2. Left bracket
3. 3/8 x 1" Carriage bolt
4. 3/16 x 1" Cotter pin
5. Front roller
6. Rod
7. 3/8" Flanged lock nut
1. Offset Link
2. 38-Link Chain
3. 0.91 Sleeve
4. 1/2" x 6 Cap Screw
5. 1/2" Flat Washer
6. 0.5 Sleeve
7. 1/2" Flange Lock Nut
8. 7/8" Sleeve
9. 7/8" Flat Washer
10. .81x1.25x1.81
Sleeve
(Rev. 3/14/2008)
Assembly 39
20944 (Rev. 2/3/2006)
Front Caster Wheel Installation for RM990-3
Remove the front caster wheel and arm assemblies
from shipping location along the outer deck rails.
Attach adjustment lugs to frame with bolts (16) and
nuts (18). Attach caster wheel arm to frame with bolt
(20) and nut (22).
The wheel comes assembled with bearings and cups
installed.
Adjust mower cutting height by using chart (page 11)
and nut (18). Tighten all hardware (see Bolt Torque
Chart).
Repeat for opposite front caster wheel.
Figure 36. Front Caster Wheel Installation
Rear Caster Wheel Installation for RM990-3
Remove the rear caster wheel and arm assemblies
from shipping location along the inner deck rails. Dis-
card the shipping bolts.
Attach adjustment lugs to frame with bolts (36), lock
washers (37) and nuts (38). Attach caster wheel arm to
frame with bolt (36), lock washer (37) and nuts (38).
The wheel comes assembled with bearings and cups
installed.
Adjust mower cutting height by using chart (page 11)
and secure with bolts (32) and nuts. Tighten all hard-
ware (see page 67).
Repeat for opposite rear caster wheel.
Figure 37. RM990-3 Rear Caster Wheel Installation
Initial Filling of Gearbox
NOTICE
Gearbox was not filled with oil at the factory. It
must be serviced before operating. Failure to ser-
vice will result in damage to gearbox.
The gearbox was not filled at the factory. Remove the
fill plug and pour in one quart of SAE 90W gear lube,
wait five minutes and add an additional pint and one
half. Allow an additional five minutes for the lube to flow
through the bearings, then check to make sure half of
the horizontal gear shaft is covered. Replace the fill
plug.
1. Wheel assembly
3. Support plate
4. Caster wheel arm
8. Caster yoke
15. Grease zerk
16. 1/2" x 3-3/4 Cap
screw
18. 1/2" Flanged nut
20. 5/8" x 4 Cap screw
22. 5/8" Flanged nut
1. Support plate
2. Caster wheel arm
12. Tire
13. Caster yoke
32. 1/2" x 3-3/4 Cap screw
34. 1/2" Flange lock nut
36. 5/8" x 4 Cap screw
38. 5/8" Hex nut
(Rev. 3/14/2008)
40 Dealer Checklists
20944 (Rev. 3/14/2008)
DEALER CHECKLISTS
PRE-DELIVERY CHECKLIST
(Dealer Responsibility)
Inspect the equipment thoroughly after assembly to
ensure it is set up properly before delivering it to the
customer.
The following check lists are a reminder of points to
inspect. Check off each item as it is found satisfactory
or after proper adjustment is made.
___Check that all safety decals are installed and in
good condition. Replace if damaged.
___Check that shields and guards are properly
installed and in good condition. Replace if damaged.
___Check all bolts to be sure they are tight.
___Check that all cotter pins and safety pins are prop-
erly installed. Replace if damaged.
___Check and grease all lubrication points as identified
in “Service, Lubrication Information”.
___ Gearboxes are not filled at the factory. Prior to
delivery, fill as specified in the “Service, Lubrication
Information” and check to see that there are no leaking
seals.
___Check that blades have been properly installed.
DELIVERY CHECKLIST
(Dealer Responsibility)
___Show customer how to make adjustments and
select proper PTO speed.
___Instruct customer how to lubricate and explain
importance of lubrication.
___Point out the safety decals. Explain their meaning
and the need to keep them in place and in good condi-
tion. Emphasize the increased safety hazards when
instructions are not followed.
___Present Operator's Manual and request that cus-
tomer and all operators read it before operating equip-
ment. Point out the manual safety rules, explain their
meanings and emphasize the increased safety hazards
that exist when safety rules are not followed.
___Show customer how to make sure driveline is prop-
erly installed and that spring-activated locking pin or
collar slides freely and is seated in groove on tractor
PTO shaft.
___Explain to customer the potential crushing hazards
of going underneath raised equipment. Instruct that
before going underneath to disconnect the driveline,
securely block up all corners with jack stands and to
follow all instructions in the “Service, Blocking Meth-
ods” section of the operators manual. Explain that
blocking up prevents cutter dropping from hydraulic
leak down, hydraulic system failures or mechanical
component failures.
___Point out the correct mounting and routing of
hydraulic hoses. Explain that during operation, mount-
ing, dismounting and storage, care must be taken to
prevent hose damage from pulling, twisting and kink-
ing.
___Show customer the safe, proper procedures to be
used when mounting, dismounting, and storing equip-
ment.
___For mounted units, add wheel weights, ballast in
front tires, and/or front tractor weight to enhance front
end stability. A minimum 20% of tractor and equipment
gross weight must be on front tractor wheels. When
adding weight to attain 20% of tractor and equipment
weight on front tractor wheels, you must not exceed the
ROPS weight certification. Weigh the tractor and equip-
ment. Do not estimate!
___Make customer aware of optional equipment avail-
able so that customer can make proper choices as
required.
___Point out all guards and shields. Explain their
importance and the safety hazards that exist when not
kept in place and in good condition.
Parts 41
20944 (Rev. 3/14/2008)
INDEX TO PARTS LIST
RM990-3 (Mounted Model)
RM990-3 & P990-3 Common Parts Main Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . page 42
RM990-3 Main Frame Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 44
Gearbox Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 46
Gearbox Assembly (After S/N 788882). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 48
Blade Spindle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51
Rubber Shielding Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 52
Chain Shielding Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53
Front Roller Assembly (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54
Front Caster Wheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55
Rear caster arm assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 56
Front Gauge Roller Assembly (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 57
Drives
Drive shaft for serial numbers 725411 and later . . . . . . . . . . . . . . . . . . . . . . . . . . page 50
Front 1/2 Drive Assembly with Square Shaft for Serial Numbers 577000 and Below
Standard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 61
Long Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 62
With Tri-Lobe Shaft for Serial Numbers 577001 thru 725410 . . . . . . . . . . page 60
Rear 1/2 drive assembly
With Tri-Lobe Shaft for Serial Numbers 577001 thru 725410 . . . . . . . . . . page 60
With Square Shaft for Serial Numbers 577000 and Below . . . . . . . . . . . . page 61
Quick hitch kit (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 63
P990-3 (Pull-Type)
Main Frame Assembly
RM990-3 & P990-3 Common Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 42
P990-3 Main Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 45
Gearbox Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 46
Rear 1/3 of Universal Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 47
Gearbox assembly (after s/n 788882). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 48
Front 2/3 of 3-Joint Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49
Blade Spindle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51
Parking Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51
Rubber Shielding Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 52
Pneumatic Tire Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 52
Chain Shielding Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53
Hub Assembly for Pneumatic Tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54
Front Roller Assembly (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54
Front Gauge Roller Assembly (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 57
Hydraulic Hose Kit & Fittings (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 58
Hydraulic Stroke Control Kit (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 58
Hydraulic Cylinder (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 59
42 Parts
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 MAIN FRAME ASSEMBLY - COMMON PARTS
63
Parts 43
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 MAIN FRAME ASSEMBLY - COMMON PARTS
REF PART QTY DESCRIPTION
1 ----- 1 Deck (not sold separately)
2 20787 2 Belt shield
3 20134 1 Right drive shield mounting bracket
(P990 only)
4 20136 1 Gearbox drive shield (P990 only)
5 20135 1 Left drive shield mounting bracket
(P990 only)
6 20670 1 Gearbox, 1.76:1 CCW (SN 788882
and prior) -or-
6 1003409 1 Gearbox, 1.69:1 CCW (after SN
788882)
7 15843 1 Bent link, (P990 only)
8 19535 1 Gearbox stand
9 19570 2 Flat pulley with bearing
10 27925 1 2 TB 11.4 Sheave P
11 18990 1 2V Power band belt 2W140
12 19587 1 Spindle belt guide
13 10799 1 P 1 x 1-1/2 Straight bore bushing
(S/N 788882 and prior) -or-
13 1482 1 P 1 x 1-1/4 Straight bore bushing
(after S/N 788882)
14 28928 1 .187 x 1.3 x 8.17 Ext. spring
15 19541 1 Idler arm assembly
17 13557 3 P 1, 1-3/8 Straight bore bushing
18 19575 3 Sheave, 5.4 2G B P
19 3444 3 Access cover
20 19589 2 Side skid (includes items 38 & 39)
21 24520 3 CCW Spindle assembly
23 24650 1 Front roller bundle complete -
Optional
24 20137 1 Complete english decal set,
RM/P990-3
25 20138 1 English safety decal set, RM/P990-3
26 50138 1 French safety decal set, RM/P990-3
27 24590KT 1 CCW Blade, 13" long - standard -or-
27 28329KT 1 CCW Low suction blade, 13" long -
Optional
28 19571 2 Flat pulley 5.95 x 2 x 1.85
29 6095 2 .626 ID x 1.85 OD Ball bearing
30 51849 1 Counter-cone shield (RM990 only)
33 1266 * 3/16 x 1-1/2 Cotter pin
34 839 * 3/8 NC x 1 Cap screw GR5 (S/N
788882 and prior) -or-
34 307133 M8 x 1.25 x 25 mm Cap screw GR5
(after S/N 788882)
35 6697 * 3/8 NC x 1 Carriage bolt GR5
36 21636 3/8 x 1-1/4 Clipped head plow bolt
37 838 * 3/8 Standard lock washer
38 835 * 3/8 NC Hex nut, plated
39 14350 3/8 NC Flanged hex lock nut -or-
39 1287 * 3/8 NC Wing nut
40 20786 Grease adapter, 1/4-28 male x
1/8NPT female
41 18960 Grease fitting, 1/8 male PTF x 2.63"
42 24445 7/16 NC x 3-1/2 Eyebolt
43 4638 * 7/16 NC Hex nut
44 2210 * 7/16 Standard flat washer
45 25475 1/2 NC x 1 Cap screw GR5, full
thread
46 6100 * 1/2 NC x 1-1/4 Cap screw GR5
47 3699 * 1/2 NC x 2 Cap screw GR5
48 855 * 1/2 Extra heavy lock washer
49 3598 * 1/2 SAE Flat washer
50 29553 1/2 x 1-5/8 x 1/4 Flat washer
51 11900 * 1/2 NC Flanged hex lock nut
52 19024 5/8 x 1-3/4 Cap screw, flanged
53 20419 5/8 NC x 3 Carriage bolt GR5
54 1605 * 5/8 NC x 4 Cap screw GR5
55 19025 5/8 NC Flanged hex lock nut
56 6239 * 5/8 NC Hex lock nut
57 22060 5/8 x 1 x 1/4 Felt seal
58 19543 .657 x .875 x 1.25 Sleeve
59 11036 3/4 x 1-1/2 x 18 GA Shim washer
60 6096 5/16 NC x 3/4 Cap screw GR5
(RM990 only) -or-
60 24801 M8 x 1.25P x 20 mm Cap screw
GR5 (RM990 only)
61 2472 * 5/16 Standard lock washer (RM990
only)
62 4378 * 5/16 Standard flat washer (RM990
only) -or-
62 35155 * 5/16 SAE Flat washer ZP (RM990
only)
63 29341 Idler post
* Obtain Locally
REF PART QTY DESCRIPTION
44 Parts
20944 (Rev. 3/14/2008)
RM990-3 MAIN FRAME ASSEMBLY - MOUNTED MODEL
REF PART QTY DESCRIPTION
1 19975 1 Hitch pin bracket, left -or-
1 19976 1 Hitch pin bracket, right
2 33661 2 Category 1 mounting pin
3 19977 2 Offset link, .05 x 2.50 x 27.25
4 19585 1 Pivot link
5 19578 2 Offset link, .25 x 1.50 x 45.56
6 64814 1 1/2 Schedule 40 x 2-3/4 pipe
7 ----- 1 Universal drive
8 36998 1 PTO hanger bracket
30 3379 * 1/2 NC x 1-1/2 Cap screw GR5
32 29561 1/2 NC x 4-3/4 Cap screw GR5
33 11900 * 1/2 NC Flanged hex lock nut
35 23141 5/8 NC x 3-1/2 Cap screw GR5
36 692 * 5/8 Standard flat washer
37 1286 * 5/8 Heavy lock washer
38 230 * 5/8 NC Hex nut
39 19524 .64 x 1 x 2.09 Sleeve HT
40 15345 External snap ring, .05 x 1.38
* Standard hardware, obtain Locally
REF PART QTY DESCRIPTION
Parts 45
20944 (Rev. 3/14/2008)
P990-3 MAIN ASSEMBLY - PULL-TYPE
REF PART QTY DESCRIPTION
1 20266 1 Tongue assembly
2 7668 1 H-Frame assembly
3 30972 1 Attitude rod assembly
4 ----- 1 Front 2/3 of 3-joint drive
5 ----- 1 Rear 1/3 of universal drive
6 19012 1 Drive shaft shield
7 14255 2 18 x 9.5 x 8 Rib tire & 5-hole wheel
8 34931 2 Wheel hub and axle assembly
9 30975 1 Wheel yoke
10 23650 1 Ratchet adjustment link bundle
11 23790 1 Swivel parking jack
12 34859 1 Transport bar
13 20788 1 Jack mounting lug
24 1256 * 3/16 x 1 Cotter pin
25 839 * 3/8 x 1 Cap screw GR5
26 838 * 3/8 Standard lock washer
27 15349 * 1/2 NC x 3 Shear bolt (SN 788882
and prior)
28 12305 * 1/2 NC x 5-1/2 Cap screw GR5
29 404 1/2 x 5-3/4 Clevis pin HT
30 855 * 1/2 Extra-heavy lock washer
REF PART QTY DESCRIPTION
31 1093 1/2 NC Heavy hex nut
32 765 * 1/2 NC Hex lock nut (S/N 788882
and prior)
33 7035 1/2 Schedule 40 x 3-9/16 pipe
34 5777 5/8 x 2-1/4 Clevis pin
35 34473 * 5/8 NC x 3 Cap screw GR5
36 6239 * 5/8 NC Hex lock nut
37 23141 5/8 NC x 3-1/2 Cap screw HT
38 8317 5/8 x 5-21/32 Clevis pin
39 692 * 5/8 Standard flat washer
40 1286 * 5/8 Heavy lock washer
41 230 * 5/8 NC Hex nut
42 19524 .64 x 1 x 2.09 Sleeve HT
43 2371 * 3/4 NC Hex lock nut
44 11190 3/4 Schedule 80 x 3/4 pipe
45 11099 1-1/4 x 3-1/4 Long pin
46 11100 1-5/16 x 1-3/4 x 2-1/8 Sleeve
47 923 * 1/4 x 1-3/4 Cotter pin
48 18270 * 3/16 Safety pin
49 24636 1 x 2 x 10 GA Flat washer
50 34827 Lock-up pin
51 10475 Hydraulic cylinder - Optional
52 15345 External snap ring, .05 x 1.38 (S/N
788882 and prior)
* Standard hardware, obtain Locally
46 Parts
20944 (Rev. 3/14/2008)
GEARBOX ASSEMBLY
REF PART QTY DESCRIPTION
-- 20670 - 1.76:1 CCW Gearbox
1 20689 1 1.38 x 2.56 x .38 Seal
2 20676 1 Internal retaining ring, .093 x 2.56
3 19075 1 Shim washer kit
4 2716 1 Bearing cup
5 2717 1 Bearing cone
6 20680 1 30-Tooth gear & 1.38 shaft
7 3586 1 Bearing cone
8 3585 1 Bearing cup
9 838 4 * 3/8 Standard lock washer
10 1686 4 * 3/8 NC x 3/4 Cap screw GR5
11 10362 1 1" Sq head vented pipe plug (used
prior to S/N 2000)
12 20675 1 Gearbox cover, 10GA, 6.1 x 6.9
13 20673 1 Gearbox flange mount housing
14 20682 1 1.63 x 9.8 x 17-T Gear shaft
15 11114 2 Bearing cone
16 11115 2 Bearing cup
17 11553 1 2.25 x 3 x .375 Double lip seal
18 20677 1 Round stake nut, 1-5/8 16UN
19 12889 1 3/32 x 1-9/16 OD O-Ring
20 19077 1 Puller kit (includes bolts, #21)
21 62144 - 3/8 x 2-1/2 Cap screw, full thread
22 19165 1 Dipstick (includes item 23)
23 23542 1 1/8 x 1-1/4 ID 218 O-Ring
Parts 47
20944 (Rev. 3/14/2008)
P990-3 REAR 1/3 OF UNIVERSAL DRIVE - PULL-TYPE
REF PART QTY DESCRIPTION
1 20199 1 Drive yoke & shaft, shielded 15.50
long
2 20191 1 Plastic shield 3.00 x 17.44 (includes
items 6 & 7)
3 20192 1 Yoke & shaft 14N x 15.50
4 154 1 Universal joint repair kit L14R
5 20193 1 Shear yoke, 2000 series (S/N
788882 and prior)
5 148 1 Quick disconnect yoke, 1-3/8 (after
S/N 788882)
6 15740 1 Outer shield bearing
7 15739 1 Shield tether chain 27.5" long
8 19613 1 Plastic shield kit (consists of 20191
& 20196)
9 15349 1 1/2 NC x 3 Shear bolt
10 765 1 1/2 NC Hex lock nut
48 Parts
20944 (Rev. 3/14/2008)
GEARBOX ASSEMBLY - AFTER S/N 788882
REF PART QTY DESCRIPTION
1 1001224 1 Crown gear 22T M5.7
2 NS 1 Gearbox housing
3 57465 1 Input shaft 1-3/8 - 6 spline
4 1001218 1 Output shaft
5 1001223 1 Gear pinion 13T M5.7
6 57477 1 Bearing cup & cone
7 57478 1 Bearing cup & cone
8 57462 1 Bearing cup & cone
9 20890 1 Ball bearing
10 20897 1 Internal retainer ring 81 mm
11 ----- 2 * Cotter pin
12 57466 2 Snap ring
13 57467 1 Snap ring
14 57373 1 Spacer 35.3 x 48 x 2.5
15 57328 2 Gearbox shim kit
16 57469 1 Castle nut M24 x 1.5
17 20892 1 Castle nut metric M24 x 2
18 20893 1 Protective washer
19 57475 1 Flat washer 21 x 37 x 3
20 57474 1 Flat washer 25 x 48 x 2.5
21 20900 1 Metric seal 40 x 80 x 12
22 57463 1 Oil seal 35 x 72 x 10
23 57374 1 Oil cap
25 57376 1 Top cover
26 ----- 6 * M8 x 16 Bolt CL8.8
27 57076 1 Plug 1/2 breather
* Standard hardware, obtain locally
NS = Not Serviced
Parts 49
20944 (Rev. 3/14/2008)
P990-3 FRONT 2/3 OF 3-JOINT DRIVE - PULL-TYPE
REF PART QTY DESCRIPTION
1 20190 1 Front 2/3 of 3-joint drive complete
2 15928 1 Front 2 joints shielded
3 154 2 U-Joint repair kit L14R
4 117 1 Lock pin & spring
5 148 1 1-3/8 Quick-disconnect yoke
6 1251 1 Bearing holder with bearing
7 12128 1 .062 x 72 mm ID Snap ring
8 3502 1 1.37 ID x 2.83 OD Ball bearing
9 2985 - * 1/4-28 Threaded 905 grease fitting
10 20197 1 1-3/16 Tube drive 14N, 18.94 long
11 20196 1 Tubular shield with bearing & chain
15.25 long
12 15999 1 Shield bearing kit
13 4390 1 1/2 NF x 1-1/4 Socket head set
screw
14 4391 1 1/2 NF Hex jam nut
15 4392 1 1-1/4 Spline U-joint yoke
16 4738 1 Yoke with rectangular hole
17 4674 1 3/8 x 2 Spirol pin
18 15930 1 Outer shield
19 4724 1 Rectangular shaft & yoke
20 15738 2 Inner shield bearing
21 15739 3 Shield tether chain 27.5
22 15932 1 Inner shield with bearing & chain
50 Parts
20944 (Rev. 3/14/2008)
RM990 DRIVE SHAFT - S/N 725411 AND LATER - MOUNTED MODEL ONLY
REF PART QTY DESCRIPTION
A 40557 1 Drive assembly complete (S/N 725411 through 788882)
B 1001228 1 Drive assembly complete (after S/N 788882)
1 40574 1 Yoke, 1-3/8-6SP (complete with lock collar)
2 110 2 Cross and bearing kit
3 40764 2 Spring pin 10 mm x 80 mm
4 40575 1 Inboard yoke (male drive tube)
5 40587 1 Inner profile (cut to length)
6 40588 1 Outer profile (cut to length)
7 40576 1 Inboard yoke (female drive tube) (S/N 725411 through 788882)
8 40570 1 Yoke, 1-3/8 round bore (S/N 725411 through 788882)
8 40574 1 Yoke, 1-3/8-6 SP (complete with lock collar) (after S/N 788882)
12 40766 2 Bearing ring (Package of 2)
13 40777 2 Anti-rotation chain
14 40778 2 Screw (Package of 10)
17 40779 1 Grease zerk
18 40767 1 Guard support bearing
19 765 1 1/2 NC Lock nut (S/N 725411 through 788882)
20 40589 2 Lock collar repair kit (without yoke)
21 40590 1 Guard, outer half (also includes items 12, 13 and 14) (cut to length)
22 40591 1 Guard, inner half (also includes items 12, 13, 14 and 18) (cut to length)
23 40744 1 Shaft assembly, male half (complete with guard) (all S/N 725411 and later)
24 40745 1 Shaft assembly, female half (complete with guard) (S/N 725411 through 788882 only)
24 1001226 1 Shaft assembly, female half (complete with guard) (after S/N 788882 only)
25 3489 1 1/2 NC x 3 Cap screw, GR5 (S/N 725411 through 788882 only)
Parts 51
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 BLADE SPINDLE ASSEMBLY
P990-3 PARKING JACK - PULL-TYPE
REF PART QTY DESCRIPTION
1 24520 1 CCW Blade spindle complete
2 18359 1 1-3/8 x 1-3/4 x 5/8 Sleeve
3 2715 2 Seal for 1-3/4 shaft
4 2717 2 Bearing cone
5 18361 1 Spindle housing with cups
6 2716 2 Bearing cup
7 ---- 1 * See extended zerk page 44
8 2718 1 1-3/4 x 2-3/8 x 13 GA Flat washer
9 24521 1 Spindle shaft and crossbar asy
10 24527 2 Spindle blade lock
11 3967 2 QD Blade pin
12 13288 2 1/2 NC x 3/4 Nylok Cap screw
13 24590KT 1 CCW Blade, 13" long - Standard -or-
13 28329KT 1 CCW Low suction blade, 13" long -
Optional
REF PART QTY DESCRIPTION
1 23790 1 Swivel parking jack complete
2 25857 1 Jack hitch pin assembly
3 25858 1 Jack gearbox cover
4 25859 2 15-Tooth bevel gear
5 25860 2 * 5/32 x 1-1/4 Drive pin
6 25861 1 Jack crank handle
7 25862 1 Thrust bearing
* Standard hardware, obtain locally
52 Parts
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 RUBBER SHIELDING ASSEMBLY
P990-3 PNEUMATIC TIRE ASSEMBLY
REF PART QTY DESCRIPTION
- 15845 1 Rubber shield bundle complete
1 19556 1 Right front rubber shield plate
2 19557 1 Left front rubber shield plate
3 19558 2 Rubber belt, 3.25 x 35.25
4 19559 2 Bent link, .19 x 1.25 x 34.75
5 19566 1 Right rear rubber shield plate
6 19567 1 Left rear rubber shield plate
7 19568 2 Rubber belt, 3.75 x 48.50
8 19569 2 Link, .19 x 1.25 x 48.25
9 6697 54 * 3/8 NC x 1 Carriage bolt GR5
10 14350 54 3/8 NC Flanged hex lock nut
* Standard hardware, obtain Locally
REF PART QTY DESCRIPTION
REF PART QTY DESCRIPTION
1 14256 1 Rim for 18 x 9.5 x 8 tire
2 1258 5 1/2 NF x 1-1/8 Wheel bolt
3 14254 1 18 x 9.5 x 8 6-Ply rib tire
4 14576 1 18 x 9.5 x 8 Inner tube
5 14255 1 18 x 9.5 x 8 Rib tire and 5-hole
wheel
Parts 53
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 CHAIN SHIELDING ASSEMBLY
REF PART QTY DESCRIPTION
- 20795 1 Chain shield bundle complete
1 19552 1 Right front chain shield plate
2 19553 1 Left front chain shield plate
3 20792 1 Right rear chain shield plate
4 20793 1 Left rear chain shield plate
5 4763 60 3-Link chain, 1/4 proof
6 4765 96 4-Link chain, 1/4 proof
7 1256 8 * 3/16 x 1 Cotter pin
8 18150 2 3/8 x 29-7/8 Pin, 24-chain
9 11761 2 3/8 x 48-1/2 Pin, 39-chain
10 6697 16 * 3/8 NC x 1 Carriage bolt GR5
11 14350 16 3/8 NC Flanged hex lock nut
* Standard hardware, obtain locally
REF PART QTY DESCRIPTION
54 Parts
20944 (Rev. 3/14/2008)
P990-3 HUB ASSEMBLY FOR PNEUMATIC TIRE
RM990-3 & P990-3 FRONT ROLLER ASSEMBLY (OPTIONAL)
REF PART QTY DESCRIPTION
1 34931 1 Wheel hub and axle assembly
2 3626 1 1-14 UNS Hex nut
3 3627 1 1" Internal tooth lock washer
4 34932 1 Axle assembly
5 1266 1 * 3/16 x 1-1/2 Cotter pin
6 314 1 Seal for 1-1/2 shaft
7 2303 2 Bearing cone
8 2305 2 Bearing cup
9 14132 1 5-Bolt wheel hub with cups
10 1257 1 * 3/4 Standard flat washer
11 5849 1 3/4 NF Slotted hex nut
12 14133 1 Hub cap with grease fitting
13 6270 1 * Straight 1/4 tapered thread grease
fitting (for hub cap)
* Standard hardware, obtain locally
REF PART QTY DESCRIPTION
REF PART QTY DESCRIPTION
1 24650 1 Front roller complete
2 24583 1 Front roller, rod & bearings
3 24587 1 Left front roller bracket
4 24586 1 Right front roller bracket
5 1256 2 * 3/16 x 1 Cotter pin
6 29610 2 3/8 x 7/8 x 7/8 Nylon flange bearing
7 6697 4 * 3/8 NC x 1 Carriage bolt GR5
8 14350 4 3/8 NC Flanged hex lock nut
* Standard hardware, obtain locally
Parts 55
20944 (Rev. 3/14/2008)
RM990-3 FRONT CASTER ARM ASSEMBLY
REF PART QTY DESCRIPTION
A 20790KT 1 Complete front caster wheel kit
(Solid tires only; includes Ref. 1-30)
1 20718 2 13 x 5 x 10 Solid tire
(includes item 5) -or-
1 19744 2 13 x 5 x 6 Pneumatic tire
(includes item 5)
3 20777 2 Front caster support plate
4 20781 2 Caster wheel arm (includes PN-
31780 bronze bushing, 1-1/4 x 1-1/2
x 1-1/2)
5 2306 4 Bearing cup
6 2304 4 Bearing cone
7 5624 4 Seal for 1-1/8" shaft
8 52743 2 Caster yoke
9 52741 2 Axle
10 52744 4 .752 x 1.125 x .625 HT Bushing
14 21022 1/4 x 2 Spirol pin
15 1972 * 1/4-28 Tapered thread grease fitting
16 12024 * 1/2 NC x 3-3/4 Cap screw GR5
18 11900 1/2 NC Flange hex lock nut
20 1605 * 5/8 NC x 4 Cap screw GR5
21 1286 * 5/8 Heavy lock washer
22 230 * 5/8 NC Hex nut
24 23609 1-1/4 x 2-3/8 x 3/16 Flat washer
25 24588 1-1/4 x 1-7/8 x 3/8 Felt seal
26 24589 Caster wheel cap washer
28 1257 * 3/4 Standard flat washer
29 5849 * 3/4 NF Slotted hex nut
30 1266 * 3/16 x 1-1/2 Cotter pin
* Standard hardware, obtain locally
REF PART QTY DESCRIPTION
56 Parts
20944 (Rev. 3/14/2008)
RM990-3 REAR CASTER ARM ASSEMBLY
REF PART QTY DESCRIPTION
1 20776 2 Rear caster support plate
2 20781 2 Caster wheel arm (includes PN-
31780 bronze bushing, 1-1/4 x 1-1/2
x 1-1/2)
3 24589 2 Caster wheel cap washer
4 24588 2 1-1/4 x 1-7/8 x 3/8 Felt seal
5 23609 4 1-1/4 x 2-3/8 x 3/16 Flat washer
9 5624 4 Seal for 1-1/8 shaft
10 2304 4 Bearing cone
11 2306 4 Bearing cup
12 20718 2 13 x 5 x 10 Solid tire
(includes item 11) -or-
12 19744 2 13 x 5 x 6 Pneumatic tire
(includes item 11)
13 52743 2 Caster yoke
14 52744 4 .752 x 1.125 x .625 HT Bushing
15 52741 2 Axle
30 1972 * 1/4-28 Tapered thread grease fitting
31 21022 1/4 x 2 Spirol pin
32 12024 * 1/2 NC x 3-3/4 Cap screw GR5
34 11900 1/2 NC Flanged hex lock nut
36 1605 * 5/8 NC x 4 Cap screw GR5
37 1286 * 5/8 Heavy lock washer
38 230 * 5/8 NC Hex nut
39 1257 * 3/4 Standard flat washer
40 5849 * 3/4 NF Slotted hex nut
41 1266 * 3/16 x 1-1/2 Cotter pin
* Standard hardware, obtain locally
REF PART QTY DESCRIPTION
Parts 57
20944 (Rev. 3/14/2008)
RM990-3 & P990-3 FRONT GAUGE ROLLER ASSEMBLY (OPTIONAL)
REF PART QTY DESCRIPTION
- 15990 1 Front gauge roller complete
1 29361 1 5" Front roller, bearing & sleeve
assembly (includes items 2 & 7)
2 29364 1 1/2 x 3/4 x 5-5/16 Sleeve HT
3 19534 1 Roller bracket
4 2615 2 * 1/2 NC x 1-1/4 Carriage bolt GR5
5 22205 1 1/2 NC x 6-1/2 Cap screw GR5
6 11900 3 * 1/2 NC Flanged hex lock nut
7 29363 2 3/4 x 1 x 1-1/2 Bronze flange bearing
* Standard hardware, obtain locally
58 Parts
20944 (Rev. 3/14/2008)
P990-3 HYDRAULIC HOSE KIT & FITTINGS (OPTIONAL)
P990-3 HYDRAULIC STROKE CONTROL KIT (OPTIONAL)
REF PART QTY DESCRIPTION
1 17601 1 1/4 x 108 Hydraulic hose kit & fittings
2 17628 1 1/4 NPT x 108 High pressure hose
assembly
3 10290 1 1/4 x 1/4 x 90° Elbow with 1/16 restrictor
4 11893 1 * 1/2 x 1/4 Pipe reducer bushing
* Standard hardware, obtain locally
REF PART QTY DESCRIPTION
1 24098 1 Stroke control set for 1-1/4 cylinder
rod (contains items 2 through 5)
2 ----- 2 1-1/2" Segment
3 ----- 1 1-1/4" Segment
4 ----- 1 1" Segment
5 ----- 1 3/4" Segment
Parts 59
20944 (Rev. 3/14/2008)
P990-3 3-1/2" BORE X 8" STROKE SINGLE-ACTING HYDRAULIC CYLINDER (OPTIONAL)
FOR PULL-TYPE ONLY
REF PART QTY DESCRIPTION
1 ----- -- Not available
2 26340 1 Seal repair kit (includes items 2A
through 2G)
2A ----- 1 1-1/4 ID Wiper seal
2B ----- 1 Rod back-up ring
2C ----- 2 1-1/4 ID O-Ring
2D ----- 2 3/16 x 3-1/2 OD O-Ring
2E ----- 1 3/32 x 3/4 OD O-Ring
2F ----- 2 3-1/2 OD Back-up washer
2G ----- 1 Piston seal O-ring
3 26338 1 Rod end housing
4 25497 1 Piston
5 25496 1 1-14 UNS Jam nut
6 26341 4 Tie rod
7 11893 1 * 1/2 x 1/4 Pipe reducer bushing
8 25494 1 Cylinder butt end
9 923 4 * 1/4 x 1-3/4 Cotter pin
10 1631 2 1 x 3-5/8 Clevis pin
11 11975 1 1/2 NPT Vent plug
12 26342 1 Cylinder barrel
13 ----- -- Not required
14 ----- -- Not required
15 4391 8 1/2 NF Hex jam nut
16 25661 1 Cylinder rod clevis
17 6698 1 * 3/8 NC Hex lock nut
18 23550 1 * 3/8 NC x 1-1/2 Socket head cap
screw
19 26343 1 Cylinder rod
20 10475 1 Hydraulic cylinder complete
(single-acting)
21 4510 1 * 1/2 Pipe plug
* Standard hardware, obtain locally
† Included in seal kit
REF PART QTY DESCRIPTION
#10475 is a single-acting cylin-
der. Hoses and fittings are
installed in one port and vent
plug is installed in other port.
60 Parts
20944 (Rev. 3/14/2008)
RM990-3 FRONT 1/2 DRIVE ASSEMBLY WITH TRI-LUBE SHAFT FOR S/N 577001 - 725410
MOUNTED MODEL ONLY
RM990-3 REAR 1/2 DRIVE ASSEMBLY WITH TRI-LOBE SHAFT FOR S/N 577001 - 725410
MOUNTED MODEL ONLY
REF PART QTY DESCRIPTION
1 53453 1 Complete drive, profile shield 50,
16.9, 1.38 - front half
2 51179 1 50 QD Yoke, 1-3/8 6B
3 36990 1 U-Joint repair kit 50
4 53456 1 Yoke & Tube (profile) 50 x 16.9
5 51190 1 Drive shield bearing 50
(includes rear bearing)
6 N/S 1 Shield bell kit
7 N/S 1 Shield tube
8 30922 3 Retainer shield
9 30917 1 Chain shield tether
10 30913 1 1-3/8 Push pin set
11 53457 1 Outer shield assembly complete
(includes items 5 through 9)
N/S Not serviceable
REF PART QTY DESCRIPTION
1 53462 1 Complete drive, profile shield 50,
18.5, 1.38 SB - rear half
2 53461 1 50 Shear pin yoke
3 36990 1 U-Joint repair kit 50
4 53458 1 Yoke and tube (profile) 50
5 51190 1 Drive shield bearing 50
(includes front bearing)
6 N/S 1 Shield bell kit
7 30922 3 Retainer shield
8 30917 1 Chain shield tether
9 N/S 1 Shield tube
10 53459 1 Shield assembly non-rotating
(includes items 5 through 9)
11 3489 1 1/2 NC x 3 Cap screw GR5
12 765 1 1/2 NC Hex lock nut
N/S - Not serviceable
Parts 61
20944 (Rev. 3/14/2008)
RM990-3 FRONT 1/2 DRIVE ASSEMBLY WITH SQUARE SHAFT FOR S/N 57700 AND BELOW
MOUNTED MODEL ONLY
Standard Drive
Long Drive
REF PART QTY DESCRIPTION
1 19988 1 Drive, female half shielded, 1800,
18.4, 1.38
2 15510 1 1-3/8 QD Splined yoke, 1800 -or-
2 19894 1 1-1/8 Splined yoke 1800
(includes item 9 and 10)
3 15511 1 Universal joint repair kit, 1800
4 19990 1 Yoke & tube, female telescoping,
1800, 18.38
5 19992 1 Shield, Non-rotating, 2.75 x 19.5
6 15738 1 Shield bearing
7 117 1 Lock pin & spring
8 15739 1 Shield tether chain 27-1/2"
9 6128 1 * 1/4 NC Hex lock nut
10 19898 1 1/4 NC x 1-3/4 Cap screw GR5
REF PART QTY DESCRIPTION
1 20140 1 Drive shield, yoke & tube, 24.88
2 15510 1 1-3/8 QD Splined yoke 1800
3 15511 1 U-Joint repair kit, 1800
4 15513 1 Yoke & tube assembly, 1800 25.13
5 19607 1 Shield 2.75 x 25.6 with decal
(includes items 6 & 8)
6 15738 1 Shield bearing
7 117 1 Lock pin & spring
8 15739 1 Shield tether chain 27-1/2"
* Standard hardware, obtain locally
62 Parts
20944 (Rev. 3/14/2008)
RM990-3 REAR 1/2 DRIVE ASSEMBLY WITH SQUARE SHAFT FOR S/N 57700 AND BELOW
MOUNTED MODEL ONLY
REF PART QTY DESCRIPTION
1 19994 1 Drive male half shielded, 1800,
20.44, 1.38
2 19996 1 Shield, non-rotating, 2.50 x 2.50 x
19.9
3 19995 1 Yoke & shaft male telescoping, 1800
x 20.44
4 15511 1 Universal joint repair kit, 1800
5 19745 1 Shear yoke, 1800
6 15738 1 Inner shield bearing
7 15739 1 Shield tether chain 27-1/2"
8 19602 1 Shield kit (consists of 19992 &
19996)
9 15349 1 1/2 NC x 3 Shear bolt
10 765 1 1/2 NC Hex lock nut
Parts 63
20944 (Rev. 3/14/2008)
QUICK HITCH KIT (OPTIONAL)
REF PART QTY DESCRIPTION
1 1003692 2 Link, offset .38 x 2.0 x 15
2 1005401 2 Chain 3/8 proof coil 38 link
3 38214 2 Sleeve, .91 x 1.44 x 1.25
4 13563 1 * Cap screw 1/2 NC x 6 GR5
5 854 6 * Washer, flat 1/2 ZP
6 29368 1 Sleeve, .50 x .75 x 3.38
7 11900 1 Nut, flange lock 1/2 NC
8 29281 2 Sleeve, 7/8 x 1-1/8 x 19/32 HT
9 4258 2 * Washer, flat 7/8
10 1003614 1 Sleeve, .81 x 1.25 x 1.81
11 1005400 1 Quick hitch, complete
* Standard hardware, obtain locally
64 Appendix
Bolt Torque & Size Charts (Rev. 3/28/2007)
BOLT TORQUE CHART
Always tighten hardware to these values unless a different torque value or tightening procedure is listed for a specific
application.
Fasteners must always be replaced with the same grade as specified in the manual parts list.
Always use the proper tool for tightening hardware: SAE for SAE hardware and Metric for metric hardware.
Make sure fastener threads are clean and you start thread engagement properly.
All torque values are given to specifications used on hardware defined by SAE J1701 MAR 99 & J1701M JUL 96.
Diameter
(Inches)
Wrench
Size
MARKING ON HEAD
SAE 2 SAE 5 SAE 8
lbs-ft N-m lbs-ft N-m lbs-ft N-m
1/4" 7/16" 6 8 10 13 14 18
5/16"1/2"121719262737
3/8"9/16"233135474967
7/16"5/8"3648557578106
1/2" 3/4" 55 75 85 115 120 163
9/16" 13/16" 78 106 121 164 171 232
5/8" 15/16" 110 149 170 230 240 325
3/4" 1-1/8" 192 261 297 403 420 569
7/8" 1-5/16" 306 416 474 642 669 907
1" 1-1/2" 467 634 722 979 1020 1383
Diameter &
Thread Pitch
(Millimeters)
Wrench
Size
Coarse Thread Fine Thread
Diameter &
Thread Pitch
(Millimeters)
Marking on Head Marking on Head
Metric 8.8 Metric 10.9 Metric 8.8 Metric 10.9
N-m lbs-ft N-m lbs-ft N-m lbs-ft N-m lbs-ft
6 x 1.0 10 mm 8 6 11 8 8 6 11 8 6 x 1.0
8 x 1.25 13 mm 20 15 27 20 21 16 29 22 8 x 1.0
10 x 1.5 16 mm 39 29 54 40 41 30 57 42 10 x 1.25
12 x 1.75 18 mm 68 50 94 70 75 55 103 76 12 x 1.25
14 x 2.0 21 mm 109 80 151 111 118 87 163 120 14 x 1.5
16 x 2.0 24 mm 169 125 234 173 181 133 250 184 16 x 1.5
18 x 2.5 27 mm 234 172 323 239 263 194 363 268 18 x 1.5
20 x 2.5 30 mm 330 244 457 337 367 270 507 374 20 x 1.5
22 x 2.5 34 mm 451 332 623 460 495 365 684 505 22 x 1.5
24 x 3.0 36 mm 571 421 790 583 623 459 861 635 24 x 2.0
30 x 3.0 46 mm 1175 867 1626 1199 1258 928 1740 1283 30 x 2.0
A
SAE SERIES
TORQUE
CHART
SAE Bolt Head
Identification
SAE Grade 2
(No Dashes)
SAE Grade 5
(3 Radial Dashes)
SAE Grade 8
(6 Radial Dashes)
A
METRIC SERIES
TORQUE
CHART
Metric Bolt Head
Identification
8.8
Metric
Grade 10.9
10.9
Metric
Grade 8.8
A
A
A
Typical Washer
Installations
Lock Washer
Flat Washer
8/9/00
Bolt
Appendix 65
Bolt Torque & Size Charts (Rev. 3/28/2007)
BOLT SIZE CHART
NOTE: Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts.
ABBREVIATIONS
AG .............................................................. Agriculture
ASABE.................... American Society of Agricultural &
Biological Engineers (formerly ASAE)
ASAE ....... American Society of Agricultural Engineers
ATF ............................... Automatic Transmission Fluid
BSPP .............................British Standard Pipe Parallel
BSPTM ................British Standard Pipe Tapered Male
CV.....................................................Constant Velocity
CCW .............................................. Counter-Clockwise
CW............................................................... Clockwise
F ...................................................................... Female
FT .............................................................. Full Thread
GA .................................................................... Gauge
GR (5, etc.) ........................................... Grade (5, etc.)
HHCS ........................................Hex Head Cap Screw
HT........................................................... Heat-Treated
JIC .................Joint Industry Council 37° Degree Flare
LH .................................................................Left Hand
LT........................................................................... Left
m......................................................................... Meter
mm................................................................ Millimeter
M.......................................................................... Male
MPa.........................................................Mega Pascal
N.......................................................................Newton
NC ...................................................... National Coarse
NF ...........................................................National Fine
NPSM..................... National Pipe Straight Mechanical
NPT .......................................... National Pipe Tapered
NPT SWF ......... National Pipe Tapered Swivel Female
ORBM .......................................... O-Ring Boss - Male
P...........................................................................Pitch
PBY ...................................................... Power-Beyond
psi..........................................Pounds per Square Inch
PTO ..................................................... Power Take Off
QD....................................................Quick Disconnect
RH ..............................................................Right Hand
ROPS ........................... Roll-Over Protective Structure
RPM ........................................Revolutions Per Minute
RT ....................................................................... Right
SAE ..........................Society of Automotive Engineers
UNC .....................................................Unified Coarse
UNF...........................................................Unified Fine
UNS......................................................Unified Special
5/16 3/81/2 5/83/4 7/8
SAE Bolt Thread Sizes
MM 25 50 75 100 125 150 175
IN 1 7
Metric Bolt Thread Sizes
8MM 18MM14MM12MM10MM 16MM
234 56
66 Index
20944 (Rev. 3/14/2008)
INDEX
ASSEMBLY 31
Dealer Set-Up Instructions 31
Optional Equipment Installation 36
DEALER CHECK LISTS 40
Delivery 40
Pre-Delivery 40
DEALER SERVICE 22
Blade Spindle 22
Assembly 23
Disassembly 23
Installation 24
Removal 22
Repair Tips 22
Blocking Methods 22
Gearbox 26
Assembly 27, 29
Disassembly 26, 28
Drive Pulley Installation 30
Leakage Repair 26
Removal 26
Universal Joint Repair 24
Assembly 26
Disassembly 25
Wheel Spindle Repair 24
GENERAL
Abbreviations 49
Bolt Size Chart 49
Bolt Torque Chart 48
General Information 4
General information 4
Introduction 2
Obtaining Replacement Manuals 2
Specifications 4
Warranty
Product 64
Replacement Parts 1
OPERATION 10
Attaching Mower to Tractor 10
P990-3 12
Drawbar to Hitch Point Distance 12
RM990-3
Cutting Height Adjustment 11
Tractor Stability 12
Cleaning 15
Operating Techniques 13
Optional Blade 14
Optional Front Roller 14
Tips 14
Uneven Terrain 14
Pre-Operation Checklist,
(Operator’s Responsibility) 13
Starting and Stopping Mower 13
Transporting P990-3 Mower 14
OWNER SERVICE 16
Belt Replacement 18
Blade Servicing 19
Installation 19
Removal 19
Sharpening 19
Blocking Methods 16
Lubrication Information 16
Shear Bolt Replacement 18
Shielding Repair 18
Chain Shielding 19
Side Skide Repair 19
Wheel Bearing Maintenance - RM990-3 Only 19
PARTS 41
SAFETY
Safety & Instructional Decals 7
Safety Rules 5
Safety Symbols Explained 2
TROUBLE SHOOTING 20
Belt Conditions 21
Mowing Conditions 20
F-3079 (Rev. 6/1/2007)
WARRANTY
(All Models Except Mow’n MachineTM Zero-Turn Mowers and Woods BoundaryTM Utility Vehicles)
Please Enter Information Below and Save for Future Reference.
Date Purchased: ____________________________ From (Dealer): ___________________________________________
Model Number: ____________________________ Serial Number: ___________________________________________
Woods Equipment Company (“WOODS”) warrants this product to be free from defect in material and workmanship. Except as otherwise set
forth below, the duration of this Warranty shall be for TWELVE (12) MONTHS COMMENCING ON THE DATE OF DELIVERY OF THE
PRODUCT TO THE ORIGINAL PURCHASER.
Woods backhoe models BH70-X, BH80-X, and BH90-X are warranted for two (2) years from the date of delivery to the original purchaser.
The warranty periods for specific parts or conditions are listed below:
Under no circumstances will this Warranty apply in the event that the product, in the good faith opinion of WOODS, has been subjected to
improper operation, improper maintenance, misuse, or an accident. This Warranty does not apply in the event that the product has been
materially modified or repaired by someone other than WOODS, a WOODS authorized dealer or distributor, and/or a WOODS authorized
service center. This Warranty does not cover normal wear or tear, or normal maintenance items. This Warranty also does not cover repairs made
with parts other than those obtainable through WOODS.
This Warranty is extended solely to the original purchaser of the product. Should the original purchaser sell or otherwise transfer this product to
a third party, this Warranty does not transfer to the third party purchaser in any way. There are no third party beneficiaries of this Warranty.
WOODS makes no warranty, express or implied, with respect to engines, batteries, tires or other parts or accessories not manufactured by
WOODS. Warranties for these items, if any, are provided separately by their respective manufacturers.
WOODS’ obligation under this Warranty is limited to, at WOODS’ option, the repair or replacement, free of charge, of the product if WOODS,
in its sole discretion, deems it to be defective or in noncompliance with this Warranty. The product must be returned to WOODS with proof
of purchase within thirty (30) days after such defect or noncompliance is discovered or should have been discovered, routed through the
dealer and distributor from whom the purchase was made, transportation charges prepaid. WOODS shall complete such repair or
replacement within a reasonable time after WOODS receives the product. THERE ARE NO OTHER REMEDIES UNDER THIS
WARRANTY. THE REMEDY OF REPAIR OR REPLACEMENT IS THE SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARRANTY.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE OF THIS WARRANTY. WOODS
MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND WOODS SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY
OF MERCHANTABILITY AND/OR ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
WOODS shall not be liable for any incidental or consequential losses, damages or expenses, arising directly or indirectly from the
product, whether such claim is based upon breach of contract, breach of warranty, negligence, strict liability in tort or any other legal
theory. Without limiting the generality of the foregoing, Woods specifically disclaims any damages relating to (i) lost profits, business,
revenues or goodwill; (ii) loss of crops; (iii) loss because of delay in harvesting; (iv) any expense or loss incurred for labor, supplies, substitute
machinery or rental; or (v) any other type of damage to property or economic loss.
This Warranty is subject to any existing conditions of supply which may directly affect WOODS’ ability to obtain materials or manufacture
replacement parts.
No agent, representative, dealer, distributor, serviceperson, salesperson, or employee of any company, including without limitation, WOODS,
its authorized dealers, distributors, and service centers, is authorized to alter, modify, or enlarge this Warranty.
Answers to any questions regarding warranty service and locations may be obtained by contacting:
Part or
Condition
Warranted
Model Number Duration (from date of delivery
to the original purchaser)
Gearbox
components
BW1260, BW1800 8 years
BB48X, BB60X, BB72X, BB84X, BB600X, BB720X, BB840X, BB6000X,
BB7200X, BB8400X, DS1260, DSO1260, DS1440, TS1680, BW126-2, BW180-2 6 years
PHD25, PHD35, PHD65, PHD95, 2162, 3240, DS96, DS120, RCC42, RM550-2,
RM660-2, RM990-3, PRD6000, PRD7200, PRD8400, 7144RD-2, 9180RD-2,
9204RD-2, S15CD, S20CD, S22CD, S25CD, S27CD
5 years
RDC54, RD60, RD72 3 years (1 year if used in rental or
commercial applications)
Blade spindles RM550-2, RM660-2, RM990-3, PRD6000, PRD7200, PRD8400, 7144RD-2,
9180RD-2, 9204RD-2 3 years
Rust-through BB600, BB720, BB840, BB6000, BB7200, BB8400, BW126-2, BW180-2,
BW1260, BW1800, 2162, 3240, DS1260, DSO1260, DS1440, TS1680 10 years
F-8494 (Rev. 6/23/2005)
Woods Equipment
Company
2606 South Illinois Route 2
Post Office Box 1000
Oregon, Illinois 61061
815-732-2141 tel
815-732-7580 fax
www.WoodsEquipment.com
©1995 Woods Equipment Company. All rights reserved. WOODS, the Woods logo, and "Tested. Proven. Unbeatable." are trademarks of Woods
Equipment Company. All other trademarks, trade names, or service marks not owned by Woods Equipment Company that appear in this manual are
the property of their respective companies or mark holders. Specifications subject to change without notice.
WARRANTY
(Replacement Parts For All Models Except Mow’n MachineTM
Zero-Turn Mowers and Woods BoundaryTM Utility Vehicles)
Woods Equipment Company (“WOODS”) warrants this product to be free from defect in material and
workmanship for a period of ninety (90) days from the date of delivery of the product to the original purchaser
with the exception of V-belts, which will be free of defect in material and workmanship for a period of 12 months.
Under no circumstances will this Warranty apply in the event that the product, in the good faith opinion of
WOODS, has been subjected to improper operation, improper maintenance, misuse, or an accident. This Warranty
does not cover normal wear or tear, or normal maintenance items.
This Warranty is extended solely to the original purchaser of the product. Should the original purchaser sell or
otherwise transfer this product to a third party, this Warranty does not transfer to the third party purchaser in any
way. There are no third party beneficiaries of this Warranty.
WOODS’ obligation under this Warranty is limited to, at WOODS’ option, the repair or replacement, free of
charge, of the product if WOODS, in its sole discretion, deems it to be defective or in noncompliance with this
Warranty. The product must be returned to WOODS with proof of purchase within thirty (30) days after
such defect or noncompliance is discovered or should have been discovered, routed through the dealer and
distributor from whom the purchase was made, transportation charges prepaid. WOODS shall complete
such repair or replacement within a reasonable time after WOODS receives the product. THERE ARE NO
OTHER REMEDIES UNDER THIS WARRANTY. THE REMEDY OF REPAIR OR REPLACEMENT IS THE
SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE OF THIS
WARRANTY. WOODS MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND WOODS
SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY AND/OR ANY
IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
WOODS shall not be liable for any incidental or consequential losses, damages or expenses, arising directly
or indirectly from the product, whether such claim is based upon breach of contract, breach of warranty,
negligence, strict liability in tort or any other legal theory. Without limiting the generality of the foregoing,
Woods specifically disclaims any damages relating to (i) lost profits, business, revenues or goodwill; (ii) loss of
crops; (iii) loss because of delay in harvesting; (iv) any expense or loss incurred for labor, supplies, substitute
machinery or rental; or (v) any other type of damage to property or economic loss.
This Warranty is subject to any existing conditions of supply which may directly affect WOODS’ ability to obtain
materials or manufacture replacement parts.
No agent, representative, dealer, distributor, service person, salesperson, or employee of any company, including
without limitation, WOODS, its authorized dealers, distributors, and service centers, is authorized to alter, modify,
or enlarge this Warranty.
Answers to any questions regarding warranty service and locations may be obtained by contacting:

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