1988 JEEP CHEROKEE wheel torque

 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) \


Fig. 1: Exploded View of RWD Steering Column Major Assemblies
Installation
1) On all models, aligning lower shaft with lower coupling
and insert shaft. Raise column assembly into position onto studs.
Loosely install nuts and washers in breakaway capsules. Pull column
rearward. Tighten nuts to specification. See TORQUE SPECIFICATIONS.
2) Install a new shift lever grommet using pliers and back-up
washer to snap the grommet into place. Use a multipurpose grease to
aid installation.
3) Connect gearshift cable rod to shift lever by snapping rod
into grommet with pliers. Adjust linkage. Place steering wheel on
shaft with master splines aligned. Place damper assembly inside
steering wheel (if equipped). Install steering wheel retaining nut.
Tighten to 45 ft. lbs. (61 N.m).
4) Install horn pad assembly. Refer to procedures in the
STEERING WHEEL & HORN REMOVAL article. Connect wiring connectors at
steering column jacket. Connect battery negative cable. Test operation
of lights and horn.
5) On models with A/T, install gearshift indicator pointer.
Slowly move gearshift lever from "LOW" position to "PARK" position,
pausing briefly at each selector position. Loosen and readjust to
align pointer with each position (if necessary). Install instrument
panel steering column cover.
STEERING COLUMN (FLOOR SHIFT)
The steering column with a floor mounted gearshift is
basically the same as previously described. Standard columns and
service procedures are identical except as described below.
* In place of rotating shift housing, there is a plastic shroud
which is fixed to lock housing. Shroud covers jacket and lock
inhibitor assembly. It is held in place by a tab that fits
under side cover and one screw. Shroud can only be replaced
by removing lock housing from jacket.

17) Install ignition lock. Turn key to "LOCK" position.
Remove key. Insert cylinder into housing far enough to contact shaft.
Press inward while moving ignition switch actuator rod up and down to
align parts.
18) When parts align, cylinder will move inward and a spring
loaded retainer will snap into place locking cylinder in housing. To
replace ignition switch, position key cylinder in "LOCK" position.
Remove key. Place ignition switch in "LOCK" position (second detent
from bottom).
19) Fit ignition switch actuator rod into slider hole.
Loosely install on column with 2 screws. Push switch lightly toward
lock housing to take out slack in actuator rod. Tighten screws to 34
INCH lbs. (4 N.m). DO NOT move switch out of detent position.
20) Install dimmer switch by firmly seating push rod into
switch. Compress switch until 2 (.093") drill bit shanks can be
inserted into alignment holes. Reposition upper end of push rod in
pocket of wiper/washer switch. Remove lower column cover (if
necessary).
21) With a light upward pressure on switch, install 2 screws.
Remove drill bits. Switch should click when lever is lifted and again
as lever returns, just before it reaches lower stop. Install wire
protector over wires on column jacket, being careful not to pinch
wires.
22) Remove column from vise. Position lower bracket assembly
on steering column. Install 2 bolts. Tighten to 105 INCH lbs. (12 N.
m). Aligning master splines, install coupling assembly on steering
shaft. Support coupling under joint. Drive in roll pin.
NOTE: DO NOT remove bearings from housing unless they are to be
replaced. Install new bearings if bearings are removed from
housing. Never reuse old bearings.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE








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Application Ft. Lbs. (N.m)
Flexible Coupling Bolts .......................... 17 (23)
Steering Wheel Retaining Nut ..................... 45 (61)
Support Plate Bolts .............................. 17 (23)
INCH Lbs. (N.m)
Bearing Housing-to-Lock Housing Screws ............ 35 (4)
Bracket-to-Column Bolt .......................... 124 (14)
Column Clamp Stud ................................. 20 (2)
Column Clamp Stud Nut ........................... 106 (12)
Hazard Switch ..................................... 27 (3)
Housing Cover Screws ............................ 100 (11)
Ignition Switch Screws ............................ 35 (4)
Lock Housing-to-Jacket ........................... 90 (10)
Shift Tube Support Screws ......................... 60 (7)
Steering Column Lower Bracket Bolts ............. 106 (12)
Tilt Release Spring Retaining Screw ............... 35 (4)
Turn Signal Retaining Plate ....................... 27 (3)
Upper Bracket Nuts .............................. 106 (12)









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\003
STE ER IN G G EA R - M AN UAL

1988 J e ep C hero ke e
1988 STEERING
Jeep Manual Steering Gears
Koyo & Saginaw Recirculating Ball
Cherokee, Comanche, Wrangler
DESCRIPTION
Jeep uses the Saginaw steering gear unit. Different models
are used. The Model 525 uses 3 bolts in the side cover while the Model
535 uses 4 bolts.
Steering gears are a recirculating ball-type. Proper
engagement between sector and ball nut is obtained by adjusting screw.
Worm bearing adjuster can be turned to provide proper preloading of
upper and lower bearings.
TROUBLE SHOOTING
Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the
GENERAL TROUBLE SHOOTING section.
ADJUSTMENTS
NOTE: Adjust worm bearing preload prior to performing meshload
adjustment. If steering gear is removed, install INCH lb.
torque wrench on worm shaft to check preload adjustments.
WORM BEARING PRELOAD
1) Place reference mark on pitman arm and sector shaft.
Remove pitman arm retaining nut. Using puller, remove pitman arm from
sector shaft.
2) Disconnect pitman arm from ball stud or sector shaft.
3) Remove horn pad. Turn steering wheel slowly against one
stop then back 1/2 turn. Place an INCH-lb. torque wrench with a
maximum reading of 50 INCH lbs. (6 N.m) on steering wheel nut.
4) Measure amount of torque (preload) required to rotate
steering wheel at a constant speed for approximately 1 1/2 turns on
Ford Motor Co. models or 90 degree arc on all others.
5) Note preload. Adjust preload if not within specification.
See WORM BEARING PRELOAD table. Adjust preload by loosening lock nut
(if not previously loosened) and rotating worm bearing adjuster to
obtain correct preload.
6) Once correct preload is obtained, tighten lock nut to
specification. Perform meshload adjustment once correct preload is
obtained.
WORM BEARING PRELOAD TABLE









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Application INCH Lbs. (N.m)
Cherokee, Comanche & Wrangler ................ 5-8 (.6-.9)









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MESHLOAD ADJUSTMENT
1) Rotate steering wheel from stop-to-stop, noting the number
of revolutions. Rotate steering wheel back to the center position.

2) Ensure sector shaft cover bolts are tightened to
specification. Using an INCH lb. torque wrench, measure highest torque
required to rotate steering wheel back and forth through the center
position. Meshload must be adjusted if not within specification. See
the MESHLOAD SPECIFICATIONS table.
MESHLOAD SPECIFICATIONS TABLE









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Application INCH Lbs. (N.m)
Cherokee, Comanche & Wrangler .......... ( 1) 4-10 (.5-1.1)
( 1) - In excess of worm bearing preload. Maximum preload is
18 INCH lbs. (2.0 N.m) on Jeep models or 16 INCH lbs.
(1.8 N.m) on all others.









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3) Loosen sector shaft adjuster screw lock nut. Adjust sector
shaft adjuster screw to obtain correct reading. Tighten lock nut to
specification while holding adjusting screw.
4) Reverse removal procedures for components removed. Ensure
reference mark is aligned on pitman arm and sector shaft. Tighten
pitman arm retaining nut to specification. On Jeep models, stake
pitman arm retaining nut in 2 places.
REMOVAL & INSTALLATION
STEERING GEAR
CAUTION: All steering component fasteners are made of special quality
materials. Replacement fasteners must be of same part number
or equivalent. Tighten all fasteners to proper torque.
Install new cotter pin where used.
Removal
1) Disconnect negative battery cable. Set front wheels in
straight-ahead position. Note position of steering wheel. Remove
flexible coupling shield retaining screw (if equipped).
2) Remove flexible coupling-to-steering worm shaft flange
bolts or lower universal joint pinch bolt. Remove sector shaft nut and
washer. Place reference mark in relation of pitman arm-to-sector
shaft. Using Puller (J-6632-01), remove pitman arm. Remove steering
gear-to-frame bolts. Remove steering gear.
Installation
1) Install flexible coupling on worm shaft. Align flat on
coupling with flat on worm shaft. Push coupling on shaft until shaft
touches shoulder. Install pinch bolt. Pinch bolt must pass through
shaft undercut.
2) To install remaining components, reverse removal
procedure. Align reference mark on pitman arm and sector shaft. Ensure
splines are properly aligned. Tighten bolts to specification. On Jeep
models, stake sector shaft nut in 2 areas.
SECTOR SHAFT SEAL
NOTE: On some models, sector shaft seal may be replaced without
removing steering box. It may be necessary to remove
steering gear to gain access to remove sector shaft seal.
Removal & Installation
1) Place steering gear at center of travel. Remove sector

replacing shims as necessary.
4) Install ball nut on worm shaft. Ensure ball nut is
installed so shallow end of teeth are to the left as viewed from
steering wheel end of worm shaft. Align grooves in worm and nut by
sighting through ball guide holes.
5) There are 2 types of ball guides used. One type contains a
hole in the middle, while the other does not. If ball guides contain
the middle hole, install ball guides in the ball nut.
6) Divide balls into 2 equal groups. Insert each group into a
ball guide, while slowly turning worm shaft away from the hole. Repeat
procedure for remaining circuit.
7) On guides with no holes, separate guide halves and fill
each one half of each circuit with balls. Install remaining guide
half. Hold guides and plug ends with grease to prevent the balls from
falling out.
8) Fill each circuit of ball nut with half of remaining balls
in one circuit, and half in other. DO NOT turn worm shaft while
installing. It may be necessary to use small punch to aid in ball
installation. Install ball guides. On both types, install ball guide
clamp.
9) To install, reverse removal procedure. Lubricate all
seals, bearings and sector shaft prior to installation. Coat worm
bearing adjuster, sector shaft adjuster screw and sector shaft cover
bolts with non-hardening sealant prior to installation.
10) Screw worm bearing adjuster down until nearly all end
play has been removed. Lubricate steering gear by rotating worm shaft
until ball nut is at end of its travel.
11) Pack as much grease as possible into steering gear
housing without losing it out sector shaft opening. Rotate ball nut to
other end of its travel and pack more grease into housing.
12) Rotate ball nut until it is in center of its travel.
Insert sector shaft assembly, containing adjusting screw and shim into
housing. Center tooth of sector gear must engage center rack tooth
space in ball nut.
13) Pack housing with grease. Apply a thin bead of sealant to
sector shaft cover on models which do not use gasket. Install cover
and gasket on housing. Engage sector adjuster screw with tapped hole
in center of sector cover by turning screw counterclockwise.
14) Turn adjusting screw until sector cover is flush with
housing. Install sector cover bolts but do not tighten unless there is
a lash between sector shaft and worm shaft.
15) Tighten sector cover bolts to specification. Adjust
steering gear preload and meshload. See ADJUSTMENTS in this article.
Fig. 4: Exploded View of Saginaw Model 525 Steering Gear (Typical)
TORQUE SPECIFICATIONS

\003
STE ER IN G K NUCKLE S - 4 W D

1988 J e ep C hero ke e
1988 4WD Steering Knuckles
ALL MANUFACTURERS
DESCRIPTION
Open type steering knuckles are used on all models. Open
type knuckles provide sharper turning angle, which will decrease
vehicle turning radius. Axle shafts are free floating. Depending upon
vehicle model, steering knuckles can be attached to axle housing by
either ball joints or roller bearings and king (pivot) pins.
OVERHAUL
BALL JOINT TYPE
Disassembly
1) Raise vehicle and support securely. Remove wheels. Remove
brake caliper and rotor. If equipped, remove locking hubs. See
appropriate LOCKING HUBS article in DRIVE AXLE section.
2) Disconnect tie rod end from steering knuckle. Remove
spindle nuts and lightly tap spindle with soft face hammer to free it
from steering knuckle. Pull out axle shaft assembly.
3) Clean all components with solvent and dry with compressed
air. Inspect all parts for burrs, chips, wear, flat spots or cracks.
Replace all damaged or worn parts.
NOTE: When aligning upper ball joint nut to install cotter pin,
always tighten nut to align. Never loosen nut to align holes.
Reassembly
To reassemble, reverse disassembly procedure. Torque all
fittings to specifications.
Fig. 1: Exploded View of Steering Knuckle Assembly
ADJUSTMENT

NOTE: All other models are not adjustable.
BALL JOINTS
Jeep, Truck & Wagoneer
1) Raise vehicle and remove front wheels. Disconnect
steering damper and connecting rod. Remove cotter pin from right side
tie rod retaining nut. Rotate steering knuckles through complete arc
several times.
2) Place torque wrench on right side tie rod retaining nut.
Torque to turn knuckles through complete arc should not be more than
25 ft. lbs. (34 N.m).
3) If turning effort is excessive, disconnect tie rod ends
at knuckles. Measure turning effort of right and left side knuckles.
Individual turning effort should not be more than 10 ft. lbs. (14
N.m).
4) If individual turning effort is more than specified,
replace upper ball joint split ring seat. If turning effort is more
than 10 ft. lbs. (14 N.m) after split ring seat replacement, ball
joints will have to be replaced.
TURNING ANGLE
Truck & Wagoneer
1) Turning angle stop screws are located at rear of steering
knuckle, just above axle centerline. To adjust, loosen lock nut on
turning angle stop screw. Jeep turning angle is not adjustable.
2) Using turntable to measure angle, adjust stop screw to
obtain specified angle. Tighten lock nut without changing setting.
TURN ANGLE ADJUSTMENT
TURNING ANGLE ADJUSTMENT TABLE








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Application Left Right
Wheel Wheel
Jeep
Cherokee,
Comanche,
& Wrangler .......... ( 1) 32-33
 ................. ( 1) 32-33
Wagoneer ................. 36-37 ....................... 36-37
(1) - Angle stops are not adjustable. Parts must be replaced if
angle is incorrect.









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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE








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Application Ft. Lbs.(N.m)\
Ball Joint Type
Lower Ball Joint Nut
Jeep .................................................. 100 (136)\
Upper Ball Joint Nut
Jeep .................................................. 100 (136)\
Upper Ball Joint Split Retaining Seat
Jeep ..................................................... 50 (68)\









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