steering JEEP CHEROKEE 1994 Service Repair Manual

LUBRICATION AND MAINTENANCE
CONTENTS
page page
CHASSIS AND BODY COMPONENTS....... 30
DRIVETRAIN........................... 22
ENGINE MAINTENANCE.................. 13GENERAL INFORMATION.................. 1
JUMP STARTING, HOISTING AND TOWING . . 7
MAINTENANCE SCHEDULES............... 5
GENERAL INFORMATION
INDEX
page page
Classification of Lubricants.................. 2
Components Requiring No Lubrication.......... 3
Fluid Capacities.......................... 4
Fuel Requirements........................ 2Introduction.............................. 1
Recommended Lubricant and Replacement Parts . 3
Routine Service........................... 2
INTRODUCTION
Jeeptlubrication and maintenance is divided into
required and recommended service tasks.
The recommendations and procedures listed in this
group are intended for JeeptDealer Service Personnel.
Because conditions vary, it is necessary to schedule
service tasks according to a time interval as well as a
distance interval.
It is the owner's responsibility to have vehicle ser-
viced. Owner is to pay for labor and necessary parts
that are not covered by the warranty.
Additional lubrication and maintenance informa-
tion is listed in the Owner's Manual, which is in-
cluded with the vehicle.
SEVERE DRIVING CONDITIONS
When a vehicle is subjected to a severe driving con-
dition, time between recommended maintenance
should be decreased.
Refer to Engine Maintenance for the engine oil and
filter maintenance interval when involved with a se-
vere driving condition.
A severe driving condition is defined as either:
²frequent short trip driving less than 24 km (15
miles);
²frequent driving in a dusty environment;
²trailer towing;
²extensive engine idling;
²sustained high-speed operation;
²desert operation;
²frequent starting and stopping;²cold-climate operation;
²off-road driving; or
²commercial service.
To service a Jeeptvehicle for a severe driving con-
dition, change all the lubricating fluids and lubricate:
²the body components,
²all the driveline coupling joints, and
²the steering linkage
more often than for a normal driving condition to
prevent excessive wear of the components.
DUSTY AREAS
Driving in an area with dust-filled air increases the
risk of particles entering the engine and crankcase.
With this type of severe driving condition, attention
should be given to the engine and crankcase compo-
nents.
OFF-ROAD (4WD) OPERATION
After completion of off-road (4WD) operation, the
underside of the vehicle should be thoroughly in-
spected. Examine threaded fasteners for looseness.
HARSH SURFACE ENVIRONMENTS
After vehicle operation in a harsh surface environ-
ment, the following components should be inspected
and cleaned as soon as possible:
²brake drums,
²brake linings,
²front wheel bearings (2WD vehicles only), and
²axle coupling joints.
This will prevent wear and/or unpredictable brake
action.
JLUBRICATION AND MAINTENANCE 0 - 1

ROUTINE SERVICE
The following routine vehicle service is highly rec-
ommended on a monthly basis.
TIRESÐInspect the tires for unusual wear/damage
and determine if the inflation pressure is acceptable
for the vehicle load.
BATTERYÐInspect and clean the terminals.
Tighten the terminals, if necessary.
FLUIDSÐDetermine if the coolant, brake fluid,
power steering, automatic transmission, and clutch
fluid level are acceptable. Add fluid, if necessary.
LIGHTS/ELECTRICALÐTest all the electrically
operated systems in the vehicle for proper operation.
It is also recommended that the engine oil level
and the windshield washer fluid level be deter-
mined (and corrected) during each fuel fill-up.
FUEL REQUIREMENTS
All Jeeptengines require the use of unleaded gas-
oline. In addition, the fuel must have a minimum oc-
tane rating of 87.
CAUTION: UNLEADED FUEL ONLY must be used in
vehicles equipped with a catalyst emission control
system. All vehicles have reminders printed on the
instrument panel (Fig. 1) and on the fuel filler door
(Fig. 2). Vehicles also have fuel filler tubes that are
designed to accept only the small-diameter un-
leaded gasoline nozzles. It is illegal to defeat the
design of an unleaded fuel filler tube.
CLASSIFICATION OF LUBRICANTS
Lubricating fluids and chassis component lubri-
cants are classified and graded according to stan-
dards recommended by the:
²Society of Automotive Engineers (SAE),²American Petroleum Institute (API), and
²National Lubricating Grease Institute (NLGI).
ENGINE OIL
SAE VISCOSITY GRADE
An SAE viscosity grade is used to specify viscosity
of engine oil. SAE 30 specifies a single viscosity en-
gine oil. Engine oils also have multiple viscosities
(Fig. 3).
The viscosity grade of an oil is an indicator of its
thickness or flow capability. The lower the number,
the better the flow. The second viscosity grade num-
ber (without a W suffix) is the warm/hot-temperature
viscosity. The viscosity increases with engine temper-
ature. With a single viscosity grade, the oil viscosity
is valid only for one narrow temperature range.
Fig. 1 Unleaded Fuel Only RemindersÐFuel Gauge
Fig. 2 Unleaded Fuel Only ReminderÐFuel Filler
Door
Fig. 3 SAE Oil Viscosity Grade & API Service Grade
0 - 2 LUBRICATION AND MAINTENANCEJ

MAINTENANCE SCHEDULES
INTRODUCTION
Chrysler Corporation has compiled recommended
lubrication and maintenance schedules and proce-
dures to help reduce premature wear or failure over
a broad range of operating conditions.
SEVERE SERVICE MAINTENANCE
If the vehicle is involved with a severe driving con-
dition, after each 4 800-km (3,000-miles)/3-month in-
terval. A severe driving condition includes:
²frequent short trip driving less than 24 km (15
miles);
²frequent driving in a dusty environment;
²trailer towing;
²extensive engine idling;
²sustained high-speed operation;
²desert operation;
²frequent starting and stopping;
²cold-climate operation;
²off-road driving; or
²commercial service.
MAINTENANCE SCHEDULES
AT EACH STOP FOR FUEL
²Check engine oil level, add as required.
²
Check windshield washer solvent and add if required.
ONCE A MONTH
²Check tire pressure and look for unusual wear or
damage.
²Inspect battery and clean and tighten terminals as
required.
²Check electrolyte level and add water as needed.
²Check fluid levels of coolant reservoir, power steer-
ing and transmission and add as needed.
²Check all lights and all other electrical items for
correct operation.
²Check rubber seals on each side of the radiator for
proper fit.
7,500 MILES (12 000 KM) OR AT 6 MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
15,000 MILES (24 000 KM) OR AT 12 MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.²Check fluid level in battery.
²Rotate Tires.
22,500 MILES (36 000 KM) OR AT 18 MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
30,000 MILES (48 000 KM) OR AT 24 MONTHS
²Replace air cleaner filter.
²Replace spark plugs.
²Adjust drive belt.
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Check fluid level in battery.
²Drain and refill automatic transmission.
²Drain and refill transfer case.
²Rotate Tires.
37,500 MILES (60 000 KM) OR AT 30 MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Drain and refill manual transmission.
²Rotate Tires.
45,000 MILES (72 500 KM) OR AT 36 MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Check fluid level in battery.
²Rotate Tires.
52,500 MILES (84 500 KM) OR AT 42 MONTHS
²Flush and replace engine coolant.
²Check engine coolant system hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
JLUBRICATION AND MAINTENANCE 0 - 5

60,000 MILES (96 500 KM) OR AT 48 MONTHS.
²Replace air cleaner filter.
²Replace distributor cap and rotor.
²Replace ignition wires.
²Replace spark plugs.
²Adjust or replace drive belt.
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Replace fuel filter (not required for Calif. vehicles).
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Check fluid level in battery.
²Drain and refill automatic transmission.
²Drain and refill transfer case.
²Rotate Tires.
67,500 MILES (108 500 KM) OR AT 54
MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
75,000 MILES (120 500 KM) OR AT 60
MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Drain and refill manual transmission.
²Rotate Tires.
82,500 MILES (133 000 KM) OR AT 66
MONTHS
²Flush and replace engine coolant.
²Check engine coolant system, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
90,000 MILES (145 000 KM) OR AT 72
MONTHS
²Replace air cleaner filter.
²Replace spark plugs.
²Adjust drive belt.
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Check fluid level in battery.
²Drain and refill automatic transmission.
²Drain and refill transfer case.
²Rotate Tires.
97,500 MILES (157 000 KM) OR AT 78
MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
105,000 MILES (169 000 KM) OR AT 84
MONTHS
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
112,500 MILES (181 000 KM) OR AT 90
MONTHS
²Flush and replace engine coolant.
²Check engine coolant system hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Rotate Tires.
120,000 MILES (193 000 KM) OR AT 96
MONTHS
²Replace air cleaner filter.
²Replace distributor cap and rotor.
²Replace ignition wires.
²Replace spark plugs.
²Adjust or replace drive belt.
²Check engine coolant level, hoses and clamps.
²Change engine oil.
²Replace engine oil filter.
²Check exhaust system.
²Replace fuel filter (not required for Calif. vehicles).
²Lubricate steering linkage (4x4 models).
²Lubricate propeller shaft universal joints.
²Check fluid level in battery.
²Drain and refill automatic transmission.
²Drain and refill transfer case.
²Rotate Tires.
0 - 6 LUBRICATION AND MAINTENANCEJ

PORTABLE STARTING UNIT
There are many types of portable starting units
available for starting engines. Follow the manufac-
turer's instructions when involved in any engine
starting procedure.
HOISTING RECOMMENDATIONS
FLOOR JACK
When properly positioned, a floor jack can be used
to lift a Jeeptvehicle. Support the vehicle in the
raised position with jack stands at the front and rear
ends as applicable (Fig. 7).
CAUTION: Do not attempt to lift a JeepTvehicle
with a floor jack positioned under:
²an axle tube,
²a body side sill,
²a steering linkage component,
²a drive shaft,
²the engine or transmission oil pan,
²the fuel tank, or
²a front suspension arm.
Use the correct sub-frame rail or frame rail
lifting locations only (Fig. 7).
HOIST
A Jeeptvehicle can be lifted with a swiveling-arm
type hoist; with a wheel-lift, twin-post hoist; or with
a ramp-type, drive-on hoist.
When a swiveling-arm, frame-contact type
hoist is used, ensure that the lifting pads are po-
sitioned at the correct sub frame rail (Fig. 7).
TOWING RECOMMENDATIONS
TOWING EQUIPMENT
A vehicle equipped with SAE approved sling-type
towing equipment can be used to tow all Jeeptvehi-
cles (Fig. 8). When it is necessary to rear-tow a vehi-
cle, use the wheel-lift towing method with a tow
dolly located under the front wheels. A vehicle with
flat-bed towing equipment can also be used to trans-
port a disabled vehicle.
A wooden crossbeam with spacer blocks could pos-
sibly be required for proper connection when using
the sling-type, front-end towing method (Fig. 9).
SAFETY PRECAUTIONS
The following safety precautions must be consid-
ered when preparing for and during a vehicle towing
operation:
Fig. 7 Correct Vehicle Lifting LocationsÐTypical
Fig. 8 Tow Vehicles With Approved Equipment
Fig. 9 Crossbeam & Spacer Block Construction
0 - 8 LUBRICATION AND MAINTENANCEJ

²if the vehicle is damaged, secure the loose and pro-
truding parts;
²always use a safety chain system that is indepen-
dent of the lifting and towing equipment;
²do not allow any of the towing equipment to con-
tact the disabled vehicle's fuel tank;
²do not allow anyone to be under the disabled vehi-
cle while it is lifted by the towing equipment;
²do not allow passengers to ride in a vehicle being
towed;
²always observe all state and local laws involving
warning signals, night illumination, speed, etc.
²do not attempt a towing operation that could jeop-
ardize the safety of the operator, bystanders or other
motorists;
²do not exceed a towing speed of 48 km/h (30 mph);
²avoid towing distances of more than 24 km (15
miles) whenever possible; and
²do not attach tow chains or a tow sling to a
bumper, the steering linkage, the universal joints,
the constant velocity (CV) joints, or a drive shaft.
CLEARANCES AND RAMP ANGLE
SURFACE CLEARANCE
The end of the disabled vehicle that is attached to
the tow vehicle should be lifted a minimum of 10 cm
or four inches off the surface. Inspect to ensure that
the opposite end of the disabled vehicle has clearance
from the surface.
RAMP ANGLEÐFLAT-BED TOWING
If a vehicle with flat-bed towing equipment is used,
the approach ramp angle should not exceed 15 de-
grees.
SLING-TYPE, FRONT-END TOWING
XJ VEHICLES
Use the following guidelines when the tow vehicle
is attached to the front end of a disabled vehicle.
(1) Always tow with the front wheels lifted off the
surface and turned all the way to the right.
(2) Attach a J-hook to the disabled vehicle at the
left side of the axle (Fig. 10).
(3) Position the sling crossbar close to the J-hook
and below the front bumper (Fig. 11).
(4) Secure a chain to the right side of vehicle by
placing it over the axle shaft tube and attaching it to
a structural member.
(5) Attach the safety chains to the vehicle.
2WD With Manual Or Automatic Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(7) Shift the transmission to NEUTRAL, mark the
drive shaft and axle drive pinion gear shaft yoke for
installation reference. Remove the drive shaft from
the vehicle.(8) Cover the exposed end of the transmission ex-
tension housing and the universal joints. Store the
drive shaft in a safe place.
4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Manual Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(7) Shift the manual transmission into a forward
gear and the transfer case to NEUTRAL.
4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Automatic Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
Fig. 10 Sling-Type, Front-End Towing (XJ Front
View)
Fig. 11 Sling-Type, Front-End Towing (XJ Rear
View)
JLUBRICATION AND MAINTENANCE 0 - 9

When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(7) Shift the automatic transmission to PARK and
the transfer case to NEUTRAL.
4WD, Selec-Trac (242 Full-Time 4WD Transfer
Case) And Automatic Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(7) Shift the automatic transmission to PARK and
the transfer case to NEUTRAL.
YJ VEHICLES
Use the following guidelines when the tow vehicle
is attached to the front of a disabled vehicle.
(1) Always tow with the front wheels lifted off the
surface and turned all the way to the right.
CAUTION: Use tow chains with T-hooks for con-
necting to the disabled vehicle's frame rails (Fig.
12). Never use J-hooks.
(2) Attach the T-hooks to the slots in the front end
of each frame rail (Fig. 13).
(3) Position each safety chain over the top of each
front spring and inboard of each front spring shackle.
(4) Double wrap each chain.
(5) Position the sling crossbar under the front
bumper.
Command-Trac (231 Part-Time 4WD Transfer
Case) And Manual Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(7) Shift the manual transmission to a forward
gear and the transfer case to NEUTRAL.Command-Trac (231 Part-Time 4WD Transfer
Case) And Automatic Transmission
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(7) Shift the automatic transmission to PARK and
the transfer case to NEUTRAL.
SLING-TYPE, REAR-END TOWING
YJ VEHICLESÐUse wheel-lift equipment ONLY
when towing from the rear end of the vehicle is nec-
essary.
XJ VEHICLESÐUse the following guidelines
when the tow vehicle is attached to the rear of the
disabled vehicle.
(1) Attach J-hooks around the axle shaft tubes out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
2WD With Manual Or Automatic Transmission
(1) Attach J-hooks around the axle shaft tubes out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
(4) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(5) Clamp the steering wheel with the front wheels
in the straight ahead position. Do not use the steer-
ing column lock as a substitute for a clamping de-
vice.
(6) Shift the transmission to NEUTRAL.
Fig. 12 Tow Chains & Hooks
Fig. 13 Sling-Type, Front-End Towing (YJ Vehicles)
0 - 10 LUBRICATION AND MAINTENANCEJ

4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Manual Transmission
(1) Attach J-hooks around the axle shaft tubes out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
(4) Turn the ignition switch to the OFF position to
unlock the steering column.
(5) Clamp the steering wheel with the front wheels
in the straight ahead position. Do not use the steer-
ing column lock as a substitute for a clamping de-
vice.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(6) Shift the transmission to a forward gear and
the transfer case to NEUTRAL.
4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Automatic Transmission
(1) Attach J-hooks around the axle shaft tubes out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
(4) Turn the ignition switch to the OFF position to
unlock the steering column.
(5) Clamp the steering wheel with the front wheels
in the straight ahead position. Do not use the steer-
ing column lock as a substitute for a clamping de-
vice.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(6) Shift the transmission to PARK and the trans-
fer case to NEUTRAL.
4WD, Selec-Trac (242 Full-Time 4WD Transfer
Case) And Automatic Transmission
(1) Attach J-hooks around the axle shaft tubes out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
(4) Turn the ignition switch to the OFF position to
unlock the steering column.
(5) Clamp the steering wheel with the front wheels
in the straight ahead position. Do not use the steer-
ing column lock as a substitute for a clamping de-
vice.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(6) Shift the transmission to PARK and the trans-
fer case to NEUTRAL.TOWING WHEN IGNITION KEYS ARE NOT
AVAILABLE
VEHICLE DOORS UNLOCKED
2WD Vehicles
Either one of two methods can be used:
²tow the vehicle with the drive shaft removed (refer
to Sling-Type, Front-End Towing); or
²place a tow dolly under the rear wheels (Fig. 14)
and tow with the front end raised (refer to Sling-
Type, Front-End Towing).
4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Manual Transmission
(1) Shift the manual transmission to a forward
gear.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(2) Shift the transfer case to NEUTRAL.
(3) The vehicle can now be towed with the front
wheels raised (refer to Sling-Type, Front-End Tow-
ing).
4WD, Command-Trac (231 Part-Time 4WD
Transfer Case) And Automatic Transmission
(1) Check and ensure that the automatic transmis-
sion is in PARK.
When the transfer case is in the NEUTRAL po-
sition, both axles are disengaged from the pow-
ertrain. This allows the vehicle to be towed
without removing the drive shafts.
(2) Shift the transfer case to NEUTRAL.
(3) The vehicle can now be towed with the front
wheels raised (refer to Sling-Type, Front-End Tow-
ing).
4WD, Selec-Trac (242 Full-Time 4WD Transfer
Case) And Automatic Transmission
(1) Check and ensure that the automatic transmis-
sion is in PARK.
Fig. 14 Sling-Type, Front-End Towing With Rear
Wheels On A Tow Dolly
JLUBRICATION AND MAINTENANCE 0 - 11

CHASSIS AND BODY COMPONENTS
INDEX
page page
Body Components........................ 34
Chassis Component and Wheel Bearing
Lubricants............................ 30
Front Wheel Bearings..................... 31
Headlamps............................. 35Manual Steering GearÐYJ Vehicles.......... 32
Power Brake System...................... 32
Power Steering System.................... 31
Steering Linkage and Ball Studs............. 30
Tires.................................. 34
CHASSIS COMPONENT AND WHEEL BEARING
LUBRICANTS
The chassis component and wheel bearing lubri-
cants that are recommended for Jeeptvehicles are
identified by the NLGI Certification Symbol (Fig. 1).
The symbol contains a coded designation that identi-
fies the usage and quality of the lubricant.
The letterGdesignates wheel bearing lubricant.
LetterLdesignates chassis lubricant. When the let-
ters are combined the lubricant can be used for dual
applications. The suffix lettersCandBdesignate the
level of the lubricant for the application. The letterC
represents level available for wheel bearing lubricant
(G) and the letterBrepresents level available for
chassis lubricant (L).
STEERING LINKAGE AND BALL STUDS
RECOMMENDED MAINTENANCE
The general condition of the steering linkage (Fig.
2) should be inspected and the ball studs should be
lubricated:
²2WD vehicles Ð after each 24 000-km (15,000-
miles) or six-months interval of vehicle operation has
elapsed; or
²4WD vehicles Ð after each 12 000-km (7,500-
miles) or six-months interval of vehicle operation has
elapsed.
LUBRICANT SPECIFICATION
Steering linkage should be lubricated with a dual-
purpose, lithium-base lubricant that is identified as
NLGI GC-LB lubricant.
INSPECTION/LUBRICATION
(1) Inspect the steering linkage. Examine the tie
rods and the drag link for bending, and the ball
studs for looseness and excessive wear.
(2) Replace, as necessary, all torn/ruptured ball-
stud seals and damaged/defective steering linkage
components.
CAUTION: Use care to prevent lubricant from con-
tacting the brake rotors.
(3) Lubricate the ball studs:
²clean the tips of the Zerk type lubrication fittings
on the tie-rod and drag-link ball-stud ends to avoid
lubricant contamination;
²lubricate the ball studs with high quality, dual-
purpose, lithium base chassis/wheel bearing lubri-
cant (NLGI GC-LB lubricant);
²cease the lubricant pressure when lubricant begins
to freely exit the base of the seal, or if the seal be-
gins to expand; and
²wipe the excess lubricant from the exterior sur-
faces of the ball joints and the adjacent surfaces.
Fig. 1 NLGI Lubricant Container Certification/
Identification Symbol
Fig. 2 Steering Components (XJ)ÐTypical
0 - 30 LUBRICATION AND MAINTENANCEJ

FRONT WHEEL BEARINGS
Only 2WD XJ vehicles are equipped with front
wheel bearings. XJ vehicles have semi-floating axle
shafts and axle shaft bearings that are lubricated via
differential lube oil.
RECOMMENDED MAINTENANCEÐ2WD XJ
VEHICLES
The front wheel bearings should be lubricated (re-
packed) at the same time as front brake pad/caliper
service is conducted.
LUBRICANT SPECIFICATION
Wheel bearings should be lubricated with a lubri-
cant that is identified as NLGI GC-LB lubricant.
INSPECTION/LUBRICATION
(1) Remove the wheel/tire and the disc brake cali-
per.Do not disconnect the caliper brake fluid
hose unless the caliper must also be removed for
maintenance. Support the caliper with a hanger
to prevent brake fluid hose damage.
(2) Remove the dust cap, the cotter pin, the nut re-
tainer, the adjustment nut, and the thrust washer
from the spindle (Fig. 3). Discard the cotter pin.
(3) Remove the wheel outer bearing from the hub.
(4) Remove the wheel hub/disc brake rotor from
the spindle.
(5) Remove the seal and the inner wheel bearing
from the hub cavity.
(6) After removal, inspect both front wheel bearing
races for indications of pitting, brinelling and exces-
sive heat.
(7) Wipe the spindle clean and apply a small
amount of chassis/wheel bearing lubricant (NLGI
GC-LB lubricant) to prevent rust. Wipe the wheel
hub cavity clean.
CAUTION: Do not over-fill the wheel hub cavity with
lubricant. Excessive lubricant can cause overheat-ing and bearing damage. Also, excessive lubricant
can be forced out of the wheel hub cavity and con-
taminate the brake rotor/pads.
(8) Partially fill the wheel hub cavity with chassis/
wheel bearing lubricant (NLGI GC-LB lubricant).
(9) Pack the wheel bearings with chassis/wheel
bearing lubricant (NLGI GC-LB lubricant). Ensure
that sufficient lubricant is forced between the bear-
ing rollers.
(10) Install the wheel inner bearing in the wheel
hub and install a replacement seal.
(11) Clean the disc brake rotor contact surfaces, if
necessary.
(12) Install the wheel hub/disc brake rotor on the
spindle.
(13) Install the wheel outer bearing, the thrust
washer, and the spindle nut.
(14) Tighten the spindle nut with 28 NIm (21 ft.
lbs.) torque while rotating the disc brake rotor to
seat the bearings.
(15) Loosen the spindle nut 1/2 turn. While rotat-
ing the disc brake rotor, tighten the spindle nut with
2NIm (19 in. lbs.) torque.
(16) Install the nut retainer and a replacement cot-
ter pin.
(17) Clean the dust cap and apply wheel bearing
lubricant to the inside surface.Do not fill the dust
cap with lubricant.
(18) Install the dust cap.
(19) Install the disc brake caliper.
POWER STEERING SYSTEM
RECOMMENDED MAINTENANCE
The condition of power steering system should be
inspected and the fluid level checked. Add fluid as
necessary.
FLUID SPECIFICATION
Jeeptpower steering systems require MOPAR
Power Steering Fluid, or an equivalent product.
The original power steering fluid installed in
Jeeptvehicles includes black-light leak detec-
tion dye.
INSPECTION
Inspect the power steering system (Figs. 4 and 5)
for the sources of fluid leaks, steering gear housing
cracks and ensure that the steering gear is securely
attached to the vehicle frame rail. Inspect the steer-
ing damper for leaks and loose connections.
FLUID LEVEL
The fluid level dipstick is attached to the reservoir
cap (Fig. 6). The fluid level in the reservoir can be
determined with the fluid either hot or cold.
(1) Remove the cap from the reservoir.
Fig. 3 2WD Front Wheel BearingsÐXJ Vehicles
JLUBRICATION AND MAINTENANCE 0 - 31