1988 JEEP CHEROKEE water pump

tow ESP inoperative key fob battery sunroof transmission automatic transmission

Page 675 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual BATTERY TRAY AND HOLD DOWN HARDWARE INSPECTION��\ ��\ ��\ ��\ ��\ ��\ ��\ �� Condition$

BATTERY TRAY AND HOLD DOWN HARDWARE INSPECTION\
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Condition Code Procedure
Battery improperly
secured ................ 2 ................. Suggest repair.
Bent, affecting
performance ............ A .. Require repair or replacement.
Bent, not affecting
performance ............ .. ....... No service suggested or
required.
Broken, affecting
performance ............ A .. Require repair or replacement.
Broken, not affecting
performance ............ .. ....... No service suggested or
required.
Corroded, affecting
performance ............ A .. Require repair or replacement.
Corroded, not affecting
performance ............ 2 .. Suggest repair or replacement.
Cracked, affecting
performance ............ A .. Require repair or replacement.
Cracked, not affecting
performance ............ 1 .. Suggest repair or replacement.
Missing ................. C ............ Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Water drain clogged ..... A ................. Require repair.
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BATTERY WIRES
See BATTERY CABLES, WIRES AND CONNECTORS .
BELT-DRIVEN AIR PUMPS
BELT-DRIVEN AIR PUMP INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Inoperative ............. A ........ ( 1) Require replacement.
Leaking ................. A ............ Require replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 ............ Suggest replacement.
Pulley alignment
incorrect .............. B .. Require repair or replacement.
Pulley bent ............. A ............ Require replacement.
Pulley cracked .......... A ............ Require replacement.
Pulley loose ............ A .. Require repair or replacement.
Pulley missing .......... C ............ Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads

Page 755 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Wire lead conductors
exposed ...........

Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
(1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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WASTE GATES AND BOOST CONTROL MECHANISMS
WASTE GATE AND BOOST CONTROL MECHANISM INSPECTION\
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Condition Code Procedure
Boost pressure
incorrect .............. A ........... ( 1) Require repair or
replacement. Further
inspection required.
Leaking ................. A .. Require repair or replacement.
( 1) - Incorrect boost pressure includes intermittent operation
or out of OEM specification.
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WATER PUMPS (ELECTRIC)
WATER PUMP (ELECTRIC) INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Inoperative ............. A ........ ( 2) Require replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Noisy ................... 2 ............ Suggest replacement.
Rotation incorrect for
application ............ B .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.

Page 756 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Terminal burned, affecting
performance ............ A ........... (1) Require repair or
replacement.
Terminal burned, not
affecting performan

Terminal burned, affecting
performance ............ A ........... (1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Vibration ............... 1 ............ Suggest replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Check fan motor/controls. Inoperative includes
intermittent operation or out of OEM specification.
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WATER PUMPS (NON-ELECTRIC)
WATER PUMP (NON-ELECTRIC) INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
corroded ............... A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Corrosion (internal) is
excessive, affecting
performance ............ A ............ Require replacement.
Corrosion (internal) is
excessive, not affecting
performance ............ 2 . Suggest cooling system service.
Inoperative ............. A ........ ( 1) Require replacement.
Leaking ................. A ............ Require replacement.
Noisy ................... A ............ Require replacement.
Rotation incorrect for
application ............ B .. Require repair or replacement.
Shaft bent .............. A ............ Require replacement.
( 1) - Inoperative includes intermittent operation or out of
OEM specification.
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WIRING HARNESSES AND CONNECTORS

Page 834 of 1378

JEEP CHEROKEE 1988 Service Repair Manual GEN ER AL C O OLIN G S YSTE M S ER VIC IN G

1988 J e ep C hero ke e
GENERAL INFORMATION
General Cooling System Servicing
* PLEASE READ THIS FIRST *
The foll

GEN ER AL C O OLIN G S YSTE M S ER VIC IN G

1988 J e ep C hero ke e
GENERAL INFORMATION
General Cooling System Servicing
* PLEASE READ THIS FIRST *
The following article is for general information only.
Information may not apply to all years, makes and models. See specific
article in the ENGINE COOLING section.
DESCRIPTION
The basic liquid cooling system consists of a radiator, water
pump, thermostat, electric or belt-driven cooling fan, pressure cap,
heater, and various connecting hoses and cooling passages in the block
and cylinder head.
MAINTENANCE
DRAINING
Remove radiator cap and open heater control valve to maximum
heat position. Open drain cocks or remove plugs in bottom of radiator
and engine block. In-line engines usually have one plug or drain cock,
while "V" type engines will have 2, one in each bank of cylinders.
CLEANING
A good cleaning compound removes most rust and scale. Follow
manufacturer's instructions in the use of cleaner. If considerable
rust and scale has to be removed, cooling system should be flushed.
Clean radiator air passages with compressed air.
FLUSHING
CAUTION: Some manufacturers use an aluminum and plastic radiator.
Flushing solution must be compatible with aluminum.
Back Flushing
Back flushing is an effective means of removing cooling
system rust and scale. The radiator, engine and heater core should be
flushed separately.
Radiator
To flush radiator, connect flushing gun to water outlet of
radiator and disconnect water inlet hose. To prevent flooding engine,
use a hose connected to radiator inlet. Use air in short bursts to
prevent damage to radiator. Continue flushing until water runs clear.
Engine
To flush engine, remove thermostat and replace housing.
Connect flushing gun to water outlet of engine. Flush using short air
bursts until water runs clean.
Heater Core
Flush heater core as described for radiator. Ensure heater
control valve is set to maximum heat position before flushing heater.

Page 836 of 1378

JEEP CHEROKEE 1988 Service Repair Manual complete cooling system. Test components as follows, following tool
manufacturers instructions.
Radiator Cap
Visually inspect radiator cap, then dip cap into water and
connect to te

Page 912 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual Fig. 10: Identification Label Locations Courtesy of American Motors Corp. LUBRICATION SPECIFICATIONS LUBRICATION SPECIFICATIONS TABLE\ \$

Page 962 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Automatic Transmission .......................... Dexron-IIE ATF

Brake Master Cylinder .......... DOT 3 (SAE J-1703F) Brake Fluid

Engine Coolant ........... Alugard 340-2 & Water (50

Automatic Transmission .......................... Dexron-IIE ATF

Brake Master Cylinder .......... DOT 3 (SAE J-1703F) Brake Fluid

Engine Coolant ........... Alugard 340-2 & Water (50/50 Mixture)

Engine Oil (
1)

Gasoline Engine

Temperature Range

Above 30
F (-1
C) ........ SAE 20W-40 Or 20W-50 API SH/CD

Above 0
F (-18
C) ......... SAE 10W-30 Or 10W-40 API SH/CD

Less Than 60
F (16
C) ............... SAE 5W-30 API SH/CD

Drive Axles ................................ SAE 75W-90 API GL-5

Drive Axles (Trac-Lok) (
2) ................ SAE 80W-140 API GL-5

Drive Axles (Trailer Towing) .............. SAE 80W-140 API GL-5

Hydraulic Clutch ............... DOT 3 (SAE J-1703F) Brake Fluid

Manual Transmission ........................ SAE 75W-90 API GL-5

Parking Brake Cable Guides ................. NLGI Grade 2, GC-LB

Door & Hood Hinges ............................ Light Engine Oil

Manual Steering Box ............... Multi-Purpose NLGI Grade 2EP

Power Steering Pump ....................... Power Steering Fluid

Transfer Case ................................... Dexron-IIE ATF

Brake Caliper Bushings ........ GE 661 or DOW 111 Silicone Grease

Caliper Slide Pins ........... GE 661 or DOW 111 Silicone Grease

Wheel Bearings .................. Multi-Purpose NLGI Grade GC-LB

Drive Shaft U-Joints .............. Multi-Purpose NLGI Grade 2EP

Steering Linkage (
4)( 5) .................... NLGI Grade 2, GC-LB

Ball Joints (
4)( 6) ......................... NLGI Grade 2, GC-LB

Weatherstrip .......................... Silicone Spray Lubricant

Wheel Lug Nut Torque ...................... 95 ft. lbs. (129 N.m)

(
1) - SAE 10W-30 SH/CD is preferred.

(
2) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant

additive when changing fluid.

(
3) - For vehicles operating under heavy-duty towing conditions,

use SAE 75W-140 Synthetic lube.

NOTE: Before using SAE 75W-140 Synthetic the old fluid must

be DRAINED and FLUSHED with clean mineral based axle

lubricant. Then refill with new synthetic lube.

(
4) - Use low pressure grease gun to prevent seal damage.

(
5) - Fill until lubricant squeezes out from the base of seals.

(
6) - Fill ball joint until seal starts to swell.

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Fluid Capacities

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Application ( 1) Quantity

Automatic Transmission

1984-86 (904 HD)

Fluid Change ............................... 4.0 Qts. (3.8L)

Overhaul (Dry Fill) ........................ 8.0 Qts. (7.6L) \

1987-88

Fluid Change ............................... 4.0 Qts. (3.8L)

Overhaul (Dry Fill) ........................ 8.5 Qts. (8.0L) \

Cooling System (
2)

4-Cylinder .................................. 10.0 Qts. (9.5L)

6-Cylinder ................................. 12.0 Qts. (11.4L)

Engine Oil

4-Cylinder ................................... 4.0 Qts. (3.8L)

6-Cylinder ................................... 6.0 Qts. (5.7L)

Fuel Tank

Standard .................................. 13.5 Gals. (51.1L)

Optional .................................... 20 Gals. (75.7L)

Manual Transmission (
3)

AX4 (AISIN) .................................. 7.4 Pts. (3.5L) \

T4 (Borg-Warner) ............................. 3.9 Pts. (1.8L) \

Page 964 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual Inspect Front Wheel Bearings (4WD) \b\ \ \ \ \ \$

Inspect Front Wheel Bearings (4WD)

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Check Operation of Horn, Wipers/Washers & All Exterior Lights

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Inspect Condition of Wiper Blades

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Check Headlight Alignment

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Check Seat Belt Webbing and Release Mechanisms

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Check Parking Brake Operation

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Check Shift/Clutch Interlock Operation

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Lubricate Weatherstripping with Silicone

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Lubricate Door Hinges

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Lubricate Door Locks

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Check Body Drain Holes

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Rotate Tires and Adjust Air Pressure

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Replace

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Engine Oil

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Oil Filter

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Automatic Transmission Fluid, Filter and Adjust Bands

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Lubrication Specifications

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Application Specification

Automatic Transmission .......................... Dexron-IIE ATF

Brake Master Cylinder .......... DOT 3 (SAE J-1703F) Brake Fluid

Engine Coolant ........... Alugard 340-2 & Water (50/50 Mixture)

Engine Oil (
1)

Gasoline Engine

Temperature Range

Above 30
F (-1
C) ........ SAE 20W-40 Or 20W-50 API SH/CD

Above 0
F (-18
C) ......... SAE 10W-30 Or 10W-40 API SH/CD

Less Than 60
F (16
C) ............... SAE 5W-30 API SH/CD

Drive Axles ................................ SAE 75W-90 API GL-5

Drive Axles (Trac-Lok) (
2) ................ SAE 80W-140 API GL-5

Drive Axles (Trailer Towing) .............. SAE 80W-140 API GL-5

Hydraulic Clutch ............... DOT 3 (SAE J-1703F) Brake Fluid

Manual Transmission ........................ SAE 75W-90 API GL-5

Parking Brake Cable Guides ................. NLGI Grade 2, GC-LB

Door & Hood Hinges ............................ Light Engine Oil

Manual Steering Box ............... Multi-Purpose NLGI Grade 2EP

Power Steering Pump ....................... Power Steering Fluid

Transfer Case ................................... Dexron-IIE ATF

Brake Caliper Bushings ........ GE 661 or DOW 111 Silicone Grease

Caliper Slide Pins ........... GE 661 or DOW 111 Silicone Grease

Wheel Bearings .................. Multi-Purpose NLGI Grade GC-LB

Drive Shaft U-Joints .............. Multi-Purpose NLGI Grade 2EP

Steering Linkage (
4)( 5) .................... NLGI Grade 2, GC-LB

Ball Joints (
4)( 6) ......................... NLGI Grade 2, GC-LB

Weatherstrip .......................... Silicone Spray Lubricant

Wheel Lug Nut Torque ...................... 95 ft. lbs. (129 N.m)

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