1988 JEEP CHEROKEE 6 cylinder
[x] Cancel search: 6 cylinderPage 998 of 1378
![JEEP CHEROKEE 1988 Service Repair Manual \b\
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Lube Manual Gearshift Control (4WD Tra](/manual-img/16/57037/w960_57037-997.png "JEEP CHEROKEE 1988 Service Repair Manual \b\
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Lube Manual Gearshift Control (4WD Tra")
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Lube Manual Gearshift Control (4WD Transfer Case)
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Inspect/Repack Front Wheel Bearings (2WD Models)
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Inspect Front Brake Pads & Rotors
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Lubricate Caliper Slide Rails
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Inspect Rear Brake Linings & Drums
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Inspect Brake System Hoses & Lines
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Inspect Shocks for Leakage
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Inspect Tire Wear Pattern
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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, if it has not been changed in the last 12 months
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Manual Transmission Fluid
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Automatic Transmission Fluid, Filter and Adjust Bands
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Transfer Case Fluid
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Flush and Fill Engine Coolant, if not done in last 24 months
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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
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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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1) - SAE 10W-30 SH/CD is preferred.
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2) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant
additive when changing fluid.
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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) \
AX5 (AISIN) .................................. 7.0 Pts. (3.3L) \
T5 (Borg-Warner) ............................. 4.5 Pts. (2.1L) \
Transfer Case
1985-86
Selec-Trac (229 Full-Time) ................. 6.0 Pts. (2.8L) \
Command-Trac (Part-Time 207) ............... 4.5 Pts. (2.1L) \
1987
Selec-Trac ................................. 2.5 Pts. (1.2L)
Command-Trac ............................... 2.2 Pts. (1.0L)
1988
Selec-Trac ................................. 3.0 Pts. (1.4L)
Command-Trac ............................... 2.2 Pts. (1.0L)
Drive Axles (
3)
Front ........................................ 2.5 Pts. (1.2L)
Front (Disconnect Housing) .................. 5.0 Ozs. (0.15L) \
Rear ......................................... 2.5 Pts. (1.2L)
Rear (Trac-Lok) (
4) .......................... 2.5 Pts. (1.2L)
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![JEEP CHEROKEE 1988 Service Repair Manual Parking Brake System
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\](/manual-img/16/57037/w960_57037-1000.png "JEEP CHEROKEE 1988 Service Repair Manual Parking Brake System
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Parking Brake System
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Inspect Shocks for Leakage
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Inspect Tire Wear Pattern
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Rotate Tires and Adjust Air Pressure (Including Spare)
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Replace
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Engine Oil
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Oil Filter
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Spark Plugs
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Ignition Cables
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Distributor Cap and Rotor
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Air Filter Element
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Fuel Filter
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PCV Valve (
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PCV Filter
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EGR Valve & Tube (1987-92)
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Vacuum Operated Emission Components (1987-92)
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PCV Valve (
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Drive Belt (V-Type) (
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Flush and Fill Engine Coolant, if not done in last 24 months
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Automatic Transmission Fluid, Filter and Adjust Bands
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(
1) - Replacement is recommended by Chrysler at this time, but it
is not required to maintain the warranty on the PCV valve.
(
2) - Check and replace as needed.
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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
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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) \
AX5 (AISIN) .................................. 7.0 Pts. (3.3L) \
T5 (Borg-Warner) ............................. 4.5 Pts. (2.1L) \
Transfer Case
1985-86
Selec-Trac (229 Full-Time) ................. 6.0 Pts. (2.8L) \
Command-Trac (Part-Time 207) ............... 4.5 Pts. (2.1L) \
1987
Selec-Trac ................................. 2.5 Pts. (1.2L)
Command-Trac ............................... 2.2 Pts. (1.0L)
1988
Selec-Trac ................................. 3.0 Pts. (1.4L)
Command-Trac ............................... 2.2 Pts. (1.0L)
Drive Axles (
3)
Front ........................................ 2.5 Pts. (1.2L)
Front (Disconnect Housing) .................. 5.0 Ozs. (0.15L) \
Page 1003 of 1378
Rear ......................................... 2.5 Pts. (1.2L)
Rear (Trac-Lok) (
4) .......................... 2.5 Pts. (1.2L)
(
1) - Capacities are recommended or calculated levels. Always use
dipstick (if available) to measure level.
(
2) - Includes 2.3 qts. for coolant recovery bottle.
(
3) - Fill to bottom of filler plug hole.
(
4) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant
additive first, then add new fluid.
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Service Labor Times
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Application Hours
2.5L
Automatic Transmission ................................... 3.5
Manual Transmission ...................................... 3.5
2.8L
Automatic Transmission ................................... 3.7
Manual Transmission ...................................... 3.7
4.0L
Automatic Transmission ................................... 3.6
Manual Transmission ...................................... 3.6
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LUBRICATION SPECIFICATIONS
LUBRICATION SPECIFICATIONS TABLE\
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Application Fluid Specifications
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
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 ........... Mopar Multi-Purpose NLGI Grade GC-LB
Drive Shaft U-Joints ....... Mopar Multi-Purpose NLGI Grade 2EP
Steering Linkage ( 4)( 5) ...... Mopar Multi-mileage or equivalent
Ball Joints ( 4)( 6) ........... Mopar Multi-mileage or equivalent
Weatherstrip ......................... Silicone Spray Lubricant
( 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
Page 1004 of 1378
DRAINED and FLUSHED with clean mineral based (non-synthetic)
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
FLUID CAPACITIES TABLE\
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Application Quantity ( 1)
A/C System R-12 Refrigerant Capacity ............... 36-40 Ozs.
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)
AX5 (AISIN) ................................. 7.0 Pts. (3.3L)
T5 (Borg-Warner) ............................ 4.5 Pts. (2.1L)
Transfer Case
1985-86
Selec-Trac (229 Full-Time) ................ 6.0 Pts. (2.8L)
Command-Trac (Part-Time 207) .............. 4.5 Pts. (2.1L)
1987
Selec-Trac ................................ 2.5 Pts. (1.2L)
Command-Trac .............................. 2.2 Pts. (1.0L)
1988
Selec-Trac ................................ 3.0 Pts. (1.4L)
Command-Trac .............................. 2.2 Pts. (1.0L)
Drive Axles ( 3)
Front ....................................... 2.5 Pts. (1.2L)
Front (Disconnect Housing) ................. 5.0 Ozs. (0.15L)
Rear ........................................ 2.5 Pts. (1.2L)
Rear (Trac-Lok) ( 4) ......................... 2.5 Pts. (1.2L)
( 1) - Capacities are recommended or calculated levels. Always use
dipstick (if available) to measure level.
( 2) - Includes 2.3 qts. for coolant recovery bottle.
( 3) - Fill to bottom of filler plug hole.
( 4) - Add 4 ozs. (118 ml) of Limited-Slip differential lubricant
additive first, then add new fluid.
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Page 1011 of 1378
SPA R K C O NTR O L S YSTE M
1988 J e ep C hero ke e
1988 Exhaust Emission Systems
JEEP SPARK CONTROL SYSTEMS
DESCRIPTION
Jeep vehicles use spark control devices to assist ignition
system in controlling exhaust emissions. They are Spark Control
Temperature Override (CTO) valve, Non-Linear Vacuum Regulator (NLVR)\
valve, Forward Delay Valve, Reverse Delay Valve and on 4-cylinder
engines, Vacuum Spark Control Delay Valve. System application depends
upon engine size, emissions category and vehicle model.
COOLANT TEMPERATURE SENSOR (CTS)
The coolant temperature sensor is located in the intake
manifold coolant jacket. This sensor provides a voltage signal to the
Electronic Control Unit (ECU). The ECU uses this signal to determine
engine temperature. During cold engine operation, the ECU responds by
increasing ignition advance and inhibiting EGR operation.
NON-LINEAR VACUUM REGULATOR VALVE (NLVR)
NLVR valve is used on carbureted 6.0L models. This valve
supplies vacuum advance unit with a regulated combination of manifold
and carburetor ported vacuum when engine load is low and switches to
supply only carburetor ported vacuum as load increases.
Fig. 1: Non-Linear Vacuum Regulator Valve
Courtesy of Chrysler Motors.
OPERATION
Page 1023 of 1378
STE ER IN G C O LU M N S W IT C HES
1988 J e ep C hero ke e
1988 STEERING
Jeep Steering Column Switches
All Models
REMOVAL & INSTALLATION
TURN SIGNAL & HAZARD FLASHER SWITCHES
Removal & Installation
1) Place front wheels in straight-ahead position. Disconnect
battery negative cable. Remove the steering wheel. Refer to the
STEERING WHEEL & HORN REMOVAL article.
2) On models with A/T, place selector lever in "PARK"
position. Remove selector lever retaining pin and lever. Using 2
screwdrivers, remove lock plate cover. On models with tilt column,
remove tilt lever.
3) Using Plate Compressor (J-23653-A), compress lock plate.
If shaft has metric threads, use Metric Forcing Screw (J-23653-4)
prior to installing compressor on shaft. Remove and discard lock plate
snap ring. Remove plate compressor
NOTE: The lock plate is under strong spring tension. DO NOT
attempt to remove snap ring without using lock plate
compressor.
4) Remove lock plate, canceling cam, upper bearing preload
spring, spring seat and bearing race (thrust washer on some models).
Depress hazard warning switch while unscrewing from column.
5) On vehicles with A/T, use a paper clip to compress lock
tab retaining shift quadrant light wire in connector block. Disconnect
wire. On all models, remove turn signal lever attaching screw and
lever.
6) On vehicles with cruise control, disconnect 2 of 4 wires
at switch connector. Fold wires back along harness. Tape wires to
harness. Tape a string to harness to aid in removal.
7) Disconnect turn signal switch wire harness at bottom of
steering column. Tape around turn signal switch harness connector to
aid in removal. Remove turn signal switch attaching screws. Remove
switch. To install, reverse removal procedure.
LOCK CYLINDER
Removal
1) Remove horn button and steering wheel. Refer to the
STEERING WHEEL & HORN REMOVAL article. Remove turn signal switch.
Remove key warning buzzer switch and contacts as an assembly, using
needle-nose pliers.
2) On models with standard column, turn ignition lock
cylinder (clockwise) 2 detent positions beyond the "OFF/LOCK"
position. On models with tilt column, turn lock cylinder to "LOCK"
position. On all models, compress lock cylinder retaining tab and
remove lock cylinder from housing. See Fig. 1.