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LUBRICATION AND MAINTENANCE
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LUBRICATION AND MAINTENANCE
CONTENTS
page
page
CHASSIS AND BODY COMPONENTS . . . . . . . . 28
DRIVETRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ENGINE MAINTENANCE . . . . . . . . . . . . . . . . . . . 15
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 1
JUMP STARTING, TOWING AND HOISTING . . . . 9
MAINTENANCE SCHEDULES . . . . . . . . . . . . . . . . 4
GENERAL INFORMATION
INDEX
page
Classification of Lubricants . . . . . . . .
Components Requiring No Lubrication
Fluid Capacities . . . . . . . . . . . . . . . .
Fuel Requirements . . . . . . . . . . . . . .
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page
International Symbols . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Lubrication and Replacement Parts
Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . 2
INTRODUCTION
Lubrication and maintenance is divided into re-
quired and recommended service tasks. The required
service tasks must be completed to verify the emis-
sion controls function correctly. The recommended
service tasks should be completed to maintain safety
and durability.
This information will assist the service personnel
in providing maximum protection for each owner’s
vehicle.
Conditions can vary with individual driving habits.
It is necessary to schedule maintenance as a time in-
terval as well as a distance interval.
It is the owner’s responsibility to determine the ap-
plicable driving condition. Also to have the vehicle
serviced according to the maintenance schedule, and
to pay for the necessary parts and labor.
Additional maintenance and lubrication informa-
tion is listed in the Owner’s Manual.
Fig. 1 International Symbols
sensor. The fuel must have a minimum octane rating
of 87 based on the (R + M)/2 calculation method.
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 below the fuel gauge and on the
fuel filler door. The vehicles also have fuel filler
tubes that are specially designed to accept only the
small-diameter dispensing nozzles. It is illegal to
bypass the design of an unleaded fuel filler tube
and contaminate the fuel system.
INTERNATIONAL SYMBOLS
Chrysler Corporation uses international symbols to
identify engine compartment lubricant and fluid in-
spection and fill locations (Fig. 1).
FUEL REQUIREMENTS
All gasoline engines require the use of unleaded
gasoline to reduce the potentially harmful effects of
lead to the environment. Also unleaded fuel is neces-
sary to prevent damage to the catalytic converter/O2
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LUBRICATION AND MAINTENANCE
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GEAR LUBRICANTS
A dual grade is also used to specify the viscosity of
multi-purpose gear lubricants.
The API grade designation identifies gear lubri-
cants in terms of recommended usage.
CHASSIS COMPONENT AND WHEEL BEARING
LUBRICANTS
The chassis and wheel bearing lubricants that are
recommended are identified by the NLGI Certifica-
tion Symbol. The symbol contains a coded designa-
tion. This identifies the usage and quality of the
lubricant.
The letter G within the symbol designates wheel
bearing lubricant. The letter L designates chassis lu-
bricant. When the letters are combined, the lubricant
can be used for dual applications. Use only lubricants
that display the NLGI Certification Symbol (Fig. 3).
CLASSIFICATION OF LUBRICANTS
Lubricating fluids and chassis lubricants are clas-
sified according to standards recommended by the:
•
Society of Automotive Engineers (SAE)
•
American Petroleum Institute (API)
•
National Lubricating Grease Institute (NLGI)
ENGINE OIL
API CERTIFICATION MARK
For maximum engine protection during all driving
conditions, install an engine oil that contains the API
Certification Mark (Fig. 2). The API Certification
Mark indicates that the oil is certified to meet the
most critical requirements established by the manu-
facturer.
Conformance to API specifications is determined by
tests that measure the ability of an oil to control:
•
Engine wear.
•
Bearing corrosion.
•
Sludge.
•
Varnish.
•
Oil thickening.
•
Rust.
•
Piston deposits.
Fig. 3 NLGI Lubricant Container Certification/
Identification Symbol
LUBRICATION AND REPLACEMENT PARTS
RECOMMENDATION
Jeep vehicles are engineered to provide many years
of dependable operation. However, lubrication service
and maintenance are required for each vehicle. When
necessary, MOPAR brand lubricants and genuine re-
placement parts are highly recommended. Each MO-
PAR brand lubricant and replacement part is
designed and to provide dependability and long ser-
vice life.
Fig. 2 The API Engine Oil Certification Mark
SAE VISCOSITY GRADE
An SAE viscosity grade is used to specify the vis-
cosity of engine oil. SAE 30 specifies a single viscos-
ity engine oil. Engine oils also have multiple
viscosities. These are specified with a dual SAE vis-
cosity grade which indicates the cold-to-hot tempera-
ture viscosity range.
API SERVICE GRADE CERTIFIED
The API Service Grade specifies the type of perfor-
mance the engine oil is intended to provide. The API
Service Grade specifications also apply to energy con-
serving engine oils.
Use an engine oil that is API Service Grade Certi-
fied or an oil that conforms to the API Service Grade
SH or SH/CD. MOPAR provides engine oils that con-
form to all of these service grades.
COMPONENTS REQUIRING NO LUBRICATION
There are many components that should not be lu-
bricated. The components that should not be lubri-
cated are:
•
Air pumps.
•
Generator bearings.
•
Distributors.
•
Drive belts.
•
Drive belt idler pulleys.
•
Rubber bushings.
•
Starter motor bearings.
•
Suspension strut bearings.
•
Throttle control cables.
•
Throttle linkage ball joints.
•
Water pump bearings.
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FLUID CAPACITIES
Fuel Tank
XJ .....................................................76.4 L (20.2 gal.)
YJ(Standard) ......................................56.8 L (15 gal.)
YJ(Optional) .......................................75.7 L (20 gal.)
Engine Oil
2.5L ......................................................3.8 L (4.0 qts.)
4.0L ......................................................5.7 L (6.0 qts.)
Cooling System
2.5L(XJ).............................................9.5 L* (10 qts.*)
2.5L(YJ) ........................................8.5 L** (9.0 qts.**)
4.0L(XJ) ........................................11.4 L* (12.0 qts.*)
4.0L(YJ) ......................................9.9 L** (10.5 qts.**)
* Includes (2.2 L) (2.3 qts) for coolant recovery res-
ervoir.
** Includes (0.9 L) (1.0 qt.) for coolant recovery res-
ervoir.
Automatic Transmission
Dry fill capacity.*
AW4 (XJ-4.0L)...................................8.0 L (16.9 pts.)
30RH (YJ-2.5L) .................................8.2 L (17.5 pts.)
32RH (YJ-4.0L) .................................8.2 L (17.5 pts.)
*Depending
on type and size of internal cooler,
length and inside diameter of cooler lines, or use of
LUBRICATION AND MAINTENANCE
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an auxiliary cooler, these figures may vary. Refer to
Group 21, Transmission for proper fluid fill proce-
dure.
Manual Transmission
AX4/5 (4X2) .........................................3.3 L (3.5 qts.)
AX5 (4X4) ............................................3.2 L (3.3 qts.)
AX15 (4X2) ..........................................3.1 L (3.2 qts.)
AX15 (4X4) ......................................3.15 L (3.32 qts.)
Fill to bottom of fill hole.
Transfer Case
SELEC-TRAC 242(XJ) .......................1.4 L (3.0 pts.)
COMMAND-TRAC 231(XJ) ...............1.0 L (2.2 pts.)
COMMAND-TRAC 231(YJ-Man Trans) ..1.5 L (3.25
pts.)
COMMAND-TRAC 231(YJ-Auto Trans)....1.0 L (2.2
pts.)
Front Axle
MODEL 30 (YJ)..............................1.65 L (3.76 pts.)
MODEL 30 (XJ)..............................1.48 L (3.13 pts.)
Rear Axle
MODEL 35 (XJ-YJ) ........................1.6 L (3.38 pts.*)
8-1/4 (XJ) .........................................2.08 L (4.4 pts.*)
* When equipped with TRAC-LOK, include 2
ounces of Friction Modifier Additive.
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LUBRICATION AND MAINTENANCE
MAINTENANCE SCHEDULES
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INTRODUCTION
There are two maintenance schedules that show
proper service intervals for Jeep Cherokee and Jeep
Wrangler vehicles. Use the schedule that best de-
scribes the conditions the vehicle is operated under.
When mileage and time is listed, follow the interval
that occurs first.
Schedule—A
lists all the scheduled maintenance
to be performed under normal operating conditions.
Schedule—B
is a schedule for vehicles that are
usually operated under one or more of the following
conditions.
•
Frequent short trip driving less than 5 miles (8
km).
•
Frequent driving in dusty conditions.
•
Trailer towing or heavy load hauling.
•
Frequent long periods of engine idling.
•
Sustained high speed operation.
•
Desert operation.
•
Frequent starting and stopping.
•
Cold climate operation.
•
Off road driving.
•
Commercial service.
•
Snow plow operation.
•
More than half of vehicle operation occurs in
heavy city traffic during hot weather (above 90° F).
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:
•
Brake drums.
•
Brake linings.
•
Front wheel bearings (2WD vehicles only).
•
Axle coupling joints.
This will prevent wear and/or unpredictable brake
action.
EMISSION CONTROL SYSTEM MAINTENANCE
The schedule emission maintenance listed in
bold
type
on the following schedules, must be done at the
mileage specified to assure the continued proper
functioning of the emission control system. These,
and all other maintenance services included in this
manual, should be done to provide the best vehicle
performance and reliability. More frequent mainte-
nance may be needed for vehicles in severe operating
conditions such as dusty areas and very short trip
driving.
AT EACH STOP FOR GASOLINE
•
Check engine oil level and add as required.
•
Check windshield washer solvent and add as re-
quired.
ONCE A MONTH
•
Check tire pressure and look for unusual tire wear
or damage.
•
Check fluid levels of coolant reservoir, brake mas-
ter cylinder, power steering and transmission. Add
fluid as required.
•
Check all lights and other electrical items for cor-
rect operation.
•
Inspect battery and clean and tighten terminals as
required.
•
Check rubber seals on each side of the radiator for
proper fit.
AT EACH OIL CHANGE
•
Inspect exhaust system.
•
Inspect brake hoses.
•
Rotate the tires at each oil change interval shown
on Schedule—A: (7,500 Miles) or every other interval
shown on Schedule—B: (6,000 Miles).
•
Check engine coolant level, hoses, and clamps.
•
Lubricate 4x4 steering linkage.
•
Lubricate propeller shaft universal joints and slip
spline, if equipped.
SCHEDULE—A
7,500 MILES (12 000 KM) OR AT 6 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
15,000 MILES (24 000 KM) OR AT 12 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
22,500 MILES (36 000 KM) OR AT 18 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
•
Inspect brake linings.
30,000 MILES (48 000 KM) OR AT 24 MONTHS
•
Replace air cleaner element.
•
Replace spark plugs.
•
Adjust belt tension on non-automatic tensioning
drive belts.
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
•
Drain and refill automatic transmission.
•
Drain and refill transfer case.
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37,500 MILES (60 000 KM) OR AT 30 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
•
Drain and refill manual transmission.
45,000 MILES (72 500 KM) OR AT 36 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
•
Inspect brake linings.
•
Flush and replace engine coolant, regardless of
mileage.
52,500 MILES (84 500 KM) OR AT 42 MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
•
Flush and replace engine coolant if not done at 36
months.
60,000 MILES (96 500 KM) OR AT 48 MONTHS
•
Replace air cleaner element.
•
Replace distributor cap and rotor.
•
Replace ignition wires.
•
Replace spark plugs.
•
Adjust or replace drive belts.
•
Change engine oil.
•
Replace engine oil filter.
•
Replace fuel filter. (See Note #1)
•
Lubricate steering linkage.
•
Drain and refill automatic transmission.
•
Drain and refill transfer case.
67,500 MILES (108 500 KM) OR AT 54
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
•
Inspect brake linings.
75,000 MILES (120 500 KM) OR AT 60
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
•
Drain and refill manual transmission.
•
Flush and replace engine coolant if it has been
30,000 miles (48 000 km) or 24 months since last
change.
82,500 MILES (133 000 KM) OR AT 66
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
LUBRICATION AND MAINTENANCE
0-5
•
Flush and replace engine coolant if it has been
30,000 miles (48 000 km) or 24 months since last
change.
90,000 MILES (145 000 KM) OR AT 72
MONTHS
•
Replace air cleaner element.
•
Replace spark plugs.
•
Adjust drive belts.
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
•
Inspect brake linings.
•
Drain and refill automatic transmission.
•
Drain and refill transfer case.
97,500 MILES (157 000 KM) OR AT 78
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
105,000 MILES (169 000 KM) OR AT 84
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage.
•
Flush and replace engine coolant if it has been
30,000 miles (48 000 km) or 24 months since last
change.
112,500 MILES (181 000 KM) OR AT 90
MONTHS
•
Change engine oil.
•
Replace engine oil filter.
•
Lubricate steering linkage (4x4).
•
Inspect brake linings.
•
Drain and refill manual transmission.
•
Flush and replace engine coolant if it has been
30,000 miles (48 000 km) or 24 months since last
change.
120,000 MILES (193 000 KM) OR AT 96
MONTHS
•
Replace air cleaner element.
•
Replace distributor cap and rotor.
•
Lubricate steering linkage.
•
Drain and refill automatic transmission.
•
Drain and refill transfer case.
•
Replace ignition wires.
•
Replace spark plugs.
•
Adjust or replace drive belts.
•
Change engine oil.
•
Replace engine oil filter.
•
Replace fuel filter. (See note #1)

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