1995 JEEP CHEROKEE maintenance schedule

If the transmission is warm, lube oil could
drip out of the fill hole. This is acceptable but
the lube oil should not gush out of the fill hole.
(2) If not acceptable, raise the lube oil level to the
bottom edge of the transmission fill hole.
Add lube oil in small amounts to raise the
level.
(3) Install the fill-hole plug in the transmission.
Tighten the plug with 37 Nzm (27 ft. lbs.) torque.
LUBE OIL CHANGE
When it becomes necessary to change manual
transmission lube oil, use the following procedure.
(1) Raise and support the vehicle.
(2) Remove the fill-hole plug from the transmis-
sion.
(3) Place a container to collect the lube oil under
the transmission drain-hole plug.
(4) Remove the drain-hole plug and drain the lube
oil from the transmission into the container.
Care should be exercised when disposing
used lube oil after it has been drained from a
transmission.
(5) Install the drain-hole plug in the transmission.
Tighten the plug with 37 Nzm (27 ft. lbs.) torque.
(6) Fill the transmission until the lube oil begins to
drip out of the fill hole.
(7) Install the fill-hole plug in the transmission.
Tighten the plug with 37 Nzm (27 ft. lbs.) torque.
(8) Remove the support and lower the vehicle.
AUTOMATIC TRANSMISSION
The automatic transmission fluid should be
changed and bands adjusted at the intervals de-
scribed in the Maintenance Schedules section of this
Group. The automatic transmission should be in-
spected for fluid leaks and proper fluid level whenother under hood service is performed. Refer to
Group 21, Transmission for proper service proce-
dures.
CAUTION: To minimize fluid contamination, verify
that dipstick is seated in the fill tube after fluid level
reading is taken.
TO INSPECT THE TRANSMISSION FLUID
LEVEL
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT PUT YOUR
HANDS NEAR THE DRIVE BELT, PULLEYS OR FAN
BLADE. DO NOT STAND IN A DIRECT LINE WITH
THE FAN BLADE.
(1) Be sure transmission fluid is at normal operat-
ing temperature. Normal operating temperature is
reached after approximately 15 miles (25km) of oper-
ation.
(2) Position the vehicle on a level surface. This is
important for an accurate fluid level check.
(3) While sitting in driver seat, apply brakes and
place gear selector in each position, then move the
selector to:
²XJ vehicles-P (Park).
²YJ vehicles-N (Neutral).
(4) Apply parking brake.
(5) Raise hood and wipe off dipstick handle to pre-
vent dirt from entering fill tube. Then remove trans-
mission fluid level indicator (dipstick) and wipe clean
with a wiping cloth.
(6) Install dipstick and verify it is seated in fill
hole or tube.
(7) Remove dipstick, with handle above tip, take
fluid level reading. If the vehicle has been driven for
at least 15 minutes before inspecting fluid level,
transmission can be considered hot and reading
should be in the OK area. If vehicle has run for less
than 15 minutes and more than 60 seconds transmis-
sion can be considered warm and reading should be
above MIN mark. Add fluid only if level is below
MIN mark on dipstick when transmission is warm
(Fig. 4).
CAUTION: Do not overfill automatic transmission,
leakage or damage can result.
AUTOMATIC TRANSMISSION FLUID
SPECIFICATION
When it becomes necessary to add fluid or when
the ATF is replaced, use:
²MOPAR Dexron IIE/Mercon ATFonlyfor AW-4
automatic transmissions (XJ vehicles).
²MOPAR ATF PLUS type 7176 (YJ vehicles).
Fig. 3 Manual Transmission Fill- & Drain-Hole
PlugsÐTypical
JLUBRICATION AND MAINTENANCE 0 - 23

SPECIAL ADDITIVES
The addition of any special-type fluid to a Jeep au-
tomatic transmission is not recommended. The only
exception is the addition of black-light detection dye
to aid in detecting the source of ATF leaks. The use
of transmission sealing additives should also be
avoided.
Black-light detection dye is factory-installed
in automatic transmissions and, unless the ATF
has been drained and re-placed, it is not neces-
sary to add dye.
FLUID AND FILTER CHANGE
The automatic transmission fluid and filter should
be changed at the intervals described in the Mainte-
nance Schedules section of this Group. Refer to
Group 21, Transmission for proper service proce-
dures.
TRANSFER CASE (4WD VEHICLES)
The transfer case should be inspected for fluid
leaks and proper fluid level when other under vehicle
service is performed.
FLUID LEVEL
The transfer case fill hole plug is located at the
rear of the housing (Fig. 5).
Determine the transfer case fluid (ATF) level ac-
cording to the following procedure.(1) Raise and support the vehicle.
(2) Remove the fill hole plug from the transfer case
(Fig. 5). The fluid (ATF) level should be at the bottom
edge of the fill hole. The level can be slightly below
the bottom edge of the fill hole if the fluid is cold.
(3) If the level is not acceptable, raise the fluid
level to the bottom edge of the fill hole.
(4) Install the fill hole plug (Fig. 5). Tighten the fill
hole plug to 48 Nzm (35 ft-lbs) torque.
(5) Remove the support and lower the vehicle.
FLUID DRAIN AND REFILL
The Transfer Case should be serviced as specified
in the Lubrication and Maintenance Schedules.
(1) Raise and support the vehicle.
(2) Remove the fill hole plug (Fig. 5) from the
transfer case.
(3) Place an appropriate container under the trans-
fer case drain hole plug (Fig. 5).
(4) Remove the drain hole plug and drain the ATF
from the transfer case into the container.
CAUTION: Do not over-tighten the drain and fill hole
plugs. Over-tightening can strip the hole threads
and/or crack the aluminum housing.
(5) Install the drain hole plug in the transfer case.
Tighten the drain hole plug to 27 Nzm (20 ft-lbs)
torque.
(6) Fill the transfer case to the bottom edge of the
fill hole.
(7) Install the fill hole plug in the transfer case
Tighten the plug to 27 Nzm (20 ft-lbs) torque.
(8) Remove the support and lower the vehicle.
FLUID SPECIFICATION
If it is necessary to add fluid to a transfer case (or
when the fluid is changed), use MOPAR ATF PLUS
type 7176 or an equivalent Mercon/Dexron III ATF.
FRONT AND REAR AXLES
The front and rear axles should be inspected for
fluid leaks and proper fluid level when other under
vehicle service is performed. Refer to the Lubrication
and Maintenance Schedule service intervals.
LUBRICANT SPECIFICATIONS
For normal vehicle operation, use SAE 75W-90,
API Quality Grade GL-5 gear lubricant in all Jeep
front (4WD only) and rear axles. Vehicles equipped
with a Trac-Lok rear axle also require a friction mod-
ifier additive included with the gear lubricant.
When involved in trailer towing applications
use SAE 80W-140, API Quality Grade GL-5 gear
lubricant in the rear axle. XJ Vehicles equipped
with a class III trailer hitch require SAE 75W-
140 synthetic gear lubricant in the rear axle.
Fig. 4 Dipstick & ATF Level
Fig. 5 Transfer CaseÐTypical
0 - 24 LUBRICATION AND MAINTENANCEJ

(11) Remove the support and lower the vehicle.
DRIVE SHAFTS
Lubricate at the intervals described in the Mainte-
nance Schedule section of this Group. Refer to Group
16, Propeller Shafts for proper service procedures.
CAUTION: It is very important that drive shafts be
lubricated at periodic intervals and that the speci-
fied type of lubricant be used. Failure to properly
lubricate could result in premature wear of drive
shaft components.
LUBRICANT SPECIFICATION
Use Mopar, Multi-purpose Grease or any lubricate
that is identified as NLGI GC-LB lubricant.
RUBBER AND PLASTIC HOSES/TUBING
The condition of underbody rubber hose and plastic
tubing should be inspected whenever underbody ser-
vice is performed.
Rubber hoses and plastic tubing should be re-
placed immediately if there is any evidence of
failure.
HOSE/TUBING INSPECTION
(1) Inspect all hose and tubing fittings for loose-
ness and corrosion. Inspect the rubber hoses for brit-
tleness and cracks. Thoroughly inspect the hose ends
(those that are slipped over nipple connectors) for
splits (Fig. 10, 11, 12, 13, 14, 15 and 16).
(2) Inspect the surface of hoses and tubing for heat
and mechanical damage. Hose and tubing located
close to an exhaust pipe should be given special at-
tention.
(3) Inspect the rubber hose routing to ensure that
the hoses do not contact any heat source, moving
component, etc., that would potentially cause heat or
mechanical damage.
(4) Inspect all the hose connections to ensure that
they are secure and there is no fluid leakage. Actual
dripping of hot fluid should be noted and the clamps
tightened in an attempt to stop the leakage before re-
placing the hose.
Fig. 10 Front Axle Vent Hose (4WD)ÐXJ Vehicles
Fig. 9 Differential Housing Cover Installed
Fig. 11 Front Axle Vent HoseÐYJ Vehicles
0 - 26 LUBRICATION AND MAINTENANCEJ

CHASSIS AND BODY COMPONENTS
INDEX
page page
Body Components........................ 32
Chassis Component and Wheel Bearing
Lubricants............................. 28
Front Wheel Bearings...................... 28
Headlamps.............................. 33
Manual Steering Gear...................... 30Power Brake System....................... 30
Power Steering System..................... 29
Speedometer Cable....................... 33
Steering Linkage.......................... 28
Tires................................... 32
CHASSIS COMPONENT AND WHEEL BEARING
LUBRICANTS
The chassis component and wheel bearing lubri-
cants that are recommended for Jeep vehicles 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
The steering linkage (Fig. 2) should be lubricated
and inspected at the intervals described in the Main-
tenance Schedules section of this Group. Refer to
Group 2, Front Suspension and Axles for proper ser-
vice procedures.
LUBRICANT SPECIFICATION
Use Mopar, Multi-purpose Grease or NLGI GC-LB
lubricant equivalent to lubricate the steering linkage.
INSPECTION
(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.
FRONT WHEEL BEARINGS
Some 2WD XJ vehicles are equipped with service-
able front wheel bearings. XJ 4WD vehicles have
semi-floating axle shafts and axle shaft bearings that
are lubricated via differential lube oil.
RECOMMENDED MAINTENANCEÐ2WD XJ
VEHICLES
If equipped, the serviceable 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
Fig. 1 NLGI Lubricant Container Certification/
Identification Symbol
Fig. 2 Steering Components (XJ)ÐTypical
0 - 28 LUBRICATION AND MAINTENANCEJ

(2) Note any indication of drum/rotor overheating,
wheel dragging or the vehicle pulling to one side
when the brakes are applied.
(3) Evaluate any performance complaints received
from the owner/operator.
(4) Repair the brake system as necessary. Refer to
Group, 5 Brakes for additional information and ser-
vice procedures.
TIRES
RECOMMENDED MAINTENANCE
The general condition of the tires and the inflation
pressures should be inspected at the same time the
engine oil is changed and the oil filter is replaced.
In addition, the tires/wheels should be rotated at
the intervals described in the Maintenance Schedules
section of this group.
INSPECTION
Inspect the tires for excessive wear, damage, etc.
Test the tires for the recommended inflation pres-sure. Refer to the tire inflation pressure decal located
on the inside of the glove box door, and also to Group
22, Tires And Wheels.
ROTATION
Refer to Group 22, Tires And Wheels for the recom-
mended method of tire/wheel rotation for a Jeep ve-
hicle.
BODY COMPONENTS
LUBRICATION REQUIREMENTS
All Jeep operating mechanisms and linkages
should be lubricated when necessary. The door
weatherstrip seals should be lubricated to prolong
their life as well as to improve door sealing.
LUBRICANT SPECIFICATIONS
All applicable exterior and interior vehicle operat-
ing mechanisms should be:
²Inspected
²Cleaned
²Pivot/sliding contact areas on the mechanisms
should then be lubricated.
Multi-purpose NLGI GC-LB MOPAR Multi-Mileage
Lubricant or an equivalent, should be used to lubri-
cate the mechanisms. The door weatherstrip seals
should be lubricated with silicone lubricant spray.
Refer to the Body Lubricant Specifications chart be-
low for additional lubricant applications.
LUBRICATION
All pivoting and sliding contact areas, should be lu-
bricated periodically to ensure quiet, easy operation
and to protect against wear and corrosion. Areas in-
clude:
²Seat tracks.
²Door hinges/latches/strikers.
²Liftgate/tailgate/hood hinges (Fig. 11).
(1) As required, lubricate the body components
with the specified lubricants.
(2) Apply silicone lubricant to a cloth and wipe it
on door seals to avoid over-spray that can soil pas-
senger clothing.
(3) Before applying lubricant, the component
should be wiped clean. After lubrication, any excess
lubricant should be removed.
(4) The door lock cylinders should be lubricated 2
times each year (preferably autumn and spring):
²Spray a small amount of lock cylinder lubricant di-
rectly into the lock cylinder.
²Apply a small amount to the key and insert it into
the lock cylinder.
²Rotate it to the locked position and then back to
the unlocked position several times.
²Remove the key. Wipe the lubricant from it with a
clean cloth to avoid soiling of clothing.
Fig. 9 Park Brake Equalizer (XJ)ÐTypical
Fig. 10 Park Brake Equalizer (YJ)ÐTypical
0 - 32 LUBRICATION AND MAINTENANCEJ

(5) Extra close attention should also be given to
the hood latch components to ensure proper function-
ing.
HEADLAMPS
MAINTENANCE SCHEDULE
Every six months check the headlamp beams to en-
sure that the headlamp beams are correctly posi-
tioned.
AIM ADJUSTMENT
Refer to Group 8L, Lamps for headlamp aim ad-
justment procedures.
SPEEDOMETER CABLE
SERVICE INFORMATION
Speedometer cable lubrication is not necessary. For
service information involving noisy cables, refer to
Group 8E, Instrument Panel and Gauges.
BODY LUBRICANT SPECIFICATIONS
Fig. 11 Hood Hinge LubricationÐXJ Vehicles
JLUBRICATION AND MAINTENANCE 0 - 33

IGNITION SYSTEMS
CONTENTS
page page
COMPONENT IDENTIFICATION/SYSTEM
OPERATION........................... 1
COMPONENT REMOVAL/INSTALLATION...... 17
DIAGNOSTICS/SERVICE PROCEDURES....... 6IGNITION SWITCHÐXJ MODELS........... 26
IGNITION SWITCHÐYJ MODELS........... 29
SPECIFICATIONS........................ 32
COMPONENT IDENTIFICATION/SYSTEM OPERATION
INDEX
page page
Automatic Shutdown (ASD) Relay.............. 1
Camshaft Position Sensor.................... 2
Crankshaft Position Sensor................... 3
Distributors............................... 4
Engine Coolant Temperature Sensor............ 5
General Information........................ 1Ignition Coil.............................. 4
Intake Manifold Air Temperature Sensor.......... 5
Manifold Absolute Pressure (MAP) Sensor........ 5
Oxygen (O2S) Sensor....................... 5
Powertrain Control Module (PCM).............. 5
Throttle Position Sensor..................... 5
GENERAL INFORMATION
Throughout this group, references are made to par-
ticular vehicle models by alphabetical designation
(XJ or YJ) or by the particular vehicle nameplate. A
chart showing a breakdown of alphabetical designa-
tions is included in the Introduction group at the be-
ginning of this manual.
This section of the group, Component Identifica-
tion/System Operation, will discuss ignition system
operation and will identify ignition system compo-
nents.
For diagnostic procedures and adjustments, refer to
the Diagnostics/Service Procedures section of this
group.
For removal and installation of ignition system
components, refer to the Component Removal/Instal-
lation section of this group.
For other useful information, refer to On-Board Di-
agnostics in the General Diagnosis sections of Group
14, Fuel System in this manual.
For operation of the DRB Scan Tool, refer to the
appropriate Powertrain Diagnostic Procedures ser-
vice manual.
An Ignition specifications section is included at the
end of this group. A general Maintenance Schedule
(mileage intervals) for ignition related items can be
found in Group 0, Lubrication and Maintenance. This
schedule can also be found in the Owners Manual.
IGNITION SYSTEMS
A multi-port, fuel injected engine is used on all
models. The ignition system is controlled by the pow-
ertrain control module (PCM) on all engines. The
PCM was formerly referred to as the SBEC or engine
controller.
The ignition system consists of:
²Spark plugs
²Ignition coil
²Secondary ignition cables
²Distributor (contains rotor and camshaft position
sensor)
²Powertrain control module (PCM)
²Crankshaft position sensor
AUTOMATIC SHUTDOWN (ASD) RELAY
The automatic shutdown (ASD) relay is located in
the power distribution center (PDC) near the battery
(Fig. 1 or 2). As one of its functions, it will supply
battery voltage to the ignition coil.
The ground circuit for the ASD relay is controlled
by the powertrain control module (PCM). This is
done through pin/cavity number 51 of the PCM 60-
way connector. The PCM then regulates ASD relay
operation by switching this ground circuit on-and-off.
Also refer to Ignition Coil for additional informa-
tion.
JIGNITION SYSTEMS 8D - 1

codes are not displayed, the problem may be mechan-
ical rather than electronic.
FUEL FILTER
The fuel filter protects the fuel injectors and fuel
pressure regulator from dirt, water and other foreign
matter. The filter is located under the vehicle along
the frame rail (Figs. 13 or 14). Replace fuel filter at
intervals specified in the Lubrication and Mainte-
nance Schedule chart found in Group 0, Lubrication
and Maintenance.
REMOVAL
WARNING: THE FUEL SYSTEM IS UNDER CON-
STANT FUEL PRESSURE (EVEN WITH THE ENGINE
OFF) OF APPROXIMATELY 131-269 KPA (19-39 PSI).
THIS PRESSURE MUST BE RELEASED BEFORE
SERVICING THE FUEL FILTER.
(1) Disconnect negative battery cable. Remove fuel
filler cap.
WARNING: FUEL PRESSURE MUST BE RELEASED
BEFORE DISCONNECTING ANY FUEL SYSTEM
COMPONENT.
(2) Release fuel system pressure. Refer to Fuel
Pressure Release Procedure in this group.
(3) Raise and support vehicle.
(4) On YJ models remove the fuel filter shield (Fig.
13).
(5) Remove hoses and clamps from inlet and outlet
sides of filter (Figs. 13 or 14). For procedures, refer to
Fuel Tubes/Lines/Hoses and Clamps. Also refer to
Quick-Connect Fittings. These can be found in the
Fuel Delivery System section of this group.
(6) Remove retaining strap bolt.
(7) Remove filter from vehicle.
INSTALLATION
CAUTION: The ends of the fuel filter are marked for
correct installation. Install filter with the end marked
IN towards fuel tank and the end marked OUT to-
wards engine.
(1) Place fuel filter in retaining strap with the
marked ends in the correct position.
(2) Install retaining strap bolt and tighten to 12
Nzm (106 in. lbs.) torque.
(3) Install inlet and outlet hoses and hose clamps.
For procedures, refer to Fuel Tubes/Lines/Hoses and
Clamps. Also refer to Quick-Connect Fittings. These
can be found in the Fuel Delivery System section of
this group.
(4) On YJ models, install fuel filter shield (Fig. 13).
(5) Lower vehicle.
(6) Connect negative battery cable.
(7) Start engine and check for leaks.
FUEL TUBES/LINES/HOSES AND CLAMPS
Also refer to the proceeding section on Quick-Con-
nect Fittings.
Fig. 13 Fuel Filter and ShieldÐYJ Models
Fig. 14 Fuel FilterÐXJ Models
JFUEL DELIVERY SYSTEM 14 - 9