1988 JEEP CHEROKEE Service Repair Manual

DOOR LOCK SWITCH
Disconnect battery negative cable. Remove door trim panel.
Remove switch housing from inner door panel. Pry wiring retaining
clips upward while disconnecting wiring. Depress retainer clips
through holes in switch housing. Remove switch assembly. To install,
reverse removal procedure.
ACTUATOR MOTOR
1) Disconnect battery negative cable. Remove door trim panel.
Drill out actuator motor retaining rivets using a 1/4" drill bit.
2) Disconnect actuator rod from bellcrank. Disconnect wires
from actuator motor, and remove motor. To install, reverse removal
procedure, using new rivets.

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DRIV E A XLE - F U LL F LO ATIN G

1988 J e ep C hero ke e
Drive Axles - Dana Full-Floating Axles
Jeep Front & Rear Drive Axles
DESCRIPTION
The axle assembly is an integral carrier type with hypoid
gear ring and pinion. Stamped steel cover is removable for inspection
and repair of differential. Vehicle loads are carried by axle
housings. Axle shafts of "full-floating" rear assemblies may be
removed without disturbing wheel bearings.
Drive pinion depth, pinion bearing preload and differential
side bearing preload are all set by shims.
See LOCKING HUB and 4WD STEERING KNUCKLE articles in this
section for removal and installation procedures for these front drive
axle component parts.
AXLE RATIO & IDENTIFICATION
A metal tag on axle is stamped with gear ratio, part numbers
and limited slip identification. To determine drive axle ratio, refer
to MODEL IDENTIFICATION BY RING GEAR SIZE table.
MODEL IDENTIFICATION BY RING GEAR SIZE









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Model Ring Gear Diameter
44 ....................................... 8.50"
60 ....................................... 9.75"
61 ....................................... 9.75"
70 ...................................... 10.50"
80 ...................................... 11.25"









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FRONT HUB, BEARING, SPINDLE & AXLE SHAFT R & I
FRONT HUB BEARING ADJUSTING SPECIFICATIONS








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Application ( 1) Ft. Lbs. (N.m)
Adjusting Nut
Step 1 ............................... 50 (68)
Step 2 .......................... Back Off 20

Lock Nut ............................... 50 (68)
( 1) - While Rotating Hub.









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REMOVAL (CHEROKEE, COMANCHE & WAGONEER)
1) Raise and support vehicle. Remove tire and wheel assembly.
Remove disc brake caliper and support out of way.
2) Match mark disc rotor and hub and remove disc rotor.
Remove cotter pin, nut lock and axle hub nut. Remove hub-to-knuckle
bolts. Pull hub assembly off axle shaft. Pull axle shaft through
knuckle to remove. Inspect axle shaft "U" joint and shaft splines for
wear. Replace as necessary.
3) Press hub out of bearings. Remove seals and bearings.

Inspect bearings and races for wear and pitting. Replace bearing and
race together.
INSTALLATION
1) Install axle shaft through knuckle and engage in axle gear
splines. Pack bearings with multi-purpose grease and fill cavities in
bearing hub. Install new seals.
2) Press hub into bearings. Install hub assembly on axle
shaft and install bolts. To complete installation, reverse removal
procedure. See TORQUE SPECIFICATIONS table at end of this article.
INTERMEDIATE AXLE SHAFT R & I
REMOVAL (DISCONNECT AXLE MODELS)
1) Remove outer axle. See FRONT HUB, BEARING, SPINDLE & AXLE
SHAFT in this article.
2) Remove axle assembly inspection cover and drain fluid.
Remove vacuum and electrical connections at disconnect housing
assembly. Remove bolts and pull disconnect housing from axle tube. See
Fig. 1 .
3) Remove intermediate shaft retaining clip on inner end of
axle shaft. Carefully slide intermediate axle shaft through seal and
out end of axle tube. Remove shift collar.
4) Inspect intermediate shaft bearings and seals for wear. If
replacement of bearings or seal is necessary, use recommended tools.
5) On Jeep, use Tool Set (J-34659), Slide Adapter (J-34659-\
4)
and Over Rod (J-34659-3) to replace intermediate shaft bearings and
seal.
Fig. 1: View Of Axle Disconnect Assembly
Courtesy of Chrysler Motors.
INSTALLATION

1) Coat intermediate shaft with lubricant and carefully slide
through seal and engage in drive axle splines. Install retaining clip.
2) Install shift collar on axle shaft. Install outer axle
shaft and check for smooth operation of shift collar.
3) Apply bead of silicone sealer to inspection cover and
install cover. Fill axle housing with 2.5 pts. (1.2L) of 75W 90 gear
oil. Pour a small amount of gear oil on shift collar and install
disconnect housing. Ensure shifting fork is properly positioned in
shift collar.
4) To complete installation, reverse removal procedure.
Tighten all bolts and nuts to specification. See TORQUE SPECIFICATIONS
table at end of this article.
FRONT AXLE ASSEMBLY R & I
REMOVAL (CHEROKEE, COMANCHE, WAGONEER)
1) Raise and support vehicle. Remove tire and wheel assembly.
Remove hubs, spindles and axles. See FRONT HUB, BEARING, SPINDLE &
AXLE SHAFT in this article.
2) Disconnect vacuum hoses and electrical connections from
shift motor. Disconnect stabilizer bar, track bar and steering damper.
3) Disconnect drive shaft at pinion yoke and tie to frame.
Remove left and right tie rod ends from knuckles.
4) Support axle assembly on floor jack. Remove lower shock
mounts. Disconnect axle housing-to-frame control arms at axle. Lower
floor jack slowly and remove axle assembly. Remove coil spring lower
bracket and coil spring.
INSTALLATION
1) Place axle housing on floor jack and position under
vehicle. Install coil springs and raise assembly into position. Ensure
top of coil springs seat in spring pocket.
2) Check all bushings and mounting hardware for wear or
damage. To complete installation, reverse removal procedure. Tighten
all bolts and nuts to specification. See TORQUE SPECIFICATIONS table
at end of this article. Fill axle assembly with gear oil. Check wheel
alignment.
REAR HUB, BEARINGS & AXLE SHAFTS R & I
1) Raise and support vehicle. Remove tire and wheel assembly.
Remove axle flange nuts or bolts. If nuts are used, rap center of axle
flange sharply with hammer to loosen tapered dowels. Remove bolts or
dowels and pull axle shaft out of hub.
2) Depending on application, bend back ears of lock washer,
or remove locking wedge from nut, or remove snap ring and key. Remove
bearing adjusting nut(s) and remove hub assembly.
3) Remove inner hub seal and bearing. Inspect bearings and
races for wear. To replace bearing, drive outer race from bearing hub
using a punch and hammer. Install new race being careful not to chip
or dent race. Ensure new race is seated in hub.
4) Pack bearings with multi-purpose grease. Install new seal.
Carefully install hub on axle spindle to avoid damaging seal lip and
spindle threads.
5) Install outer bearing and adjusting nut. Tighten bearing
adjusting nut in steps. See REAR HUB BEARING ADJUSTING SPECIFICATIONS
table. Install lock ring if used. Install spindle lock nut if used and
tighten to proper specification. See REAR HUB BEARING ADJUSTING
SPECIFICATIONS table.

REAR HUB BEARING ADJUSTING SPECIFICATIONS








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Application ( 1) Ft. Lbs. (N.m)
Adjusting Nut
Step 1 ............................... 50 (68)
Step 2 .......................... Back Off 45

Lock Nut ............................... 50 (68)
( 1) - While rotating hub.









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6) Install new axle flange gasket or apply silicone sealer.
Install axle and tighten bolts or nuts to proper specification. See
TORQUE SPECIFICATIONS table at end of this article.
Fig. 2: Rear Hub & Bearing Adjuster
REAR AXLE ASSEMBLY R & I

REMOVAL
1) Raise and support vehicle. Remove wheels, hubs and axles.
See REAR HUB, BEARINGS AND AXLE SHAFTS.
2) Remove lower shock mounts and stabilizer bar mount.
Disconnect drive shaft and tie up. Remove hydraulic brake line at
junction and plug.
3) Disconnect park brake cables and hydraulic brake lines to
wheel cylinders or calipers. Remove brake backing plate or caliper.
4) Support axle housing with floor jack and remove leaf
spring "U" bolts. Carefully lower axle housing and remove from
vehicle.
INSTALLATION
Place axle housing on floor jack. Raise axle and install "U"
bolts and nuts. To complete installation, reverse removal procedure.
Tighten all bolts and nuts to specification. See TORQUE SPECIFICATIONS
table at the end of this article and REAR HUB BEARING ADJUSTING
SPECIFICATIONS table.
PINION SEAL & YOKE R & I
REMOVAL
1) Raise and support vehicle. Mark drive shaft-to-yoke
contact area for reassembly reference. Remove drive shaft-to-yoke
attaching nuts/strap bolts. Discard used strap bolts. Remove drive
shaft.
2) Using a breaker bar and Pinion Nut Remover (8614-01),
remove pinion nut and washer. See Fig. 3. Using Yoke Pullers (8614-
01), (8614-02) and (8614-03), remove yoke. See Fig. 4. Using Pinion
Seal Remover (J-9233 or J-7583), remove pinion seal from front
differential housing. See Fig. 5.
Fig. 3: Removing Pinion Nut & Washer

Fig. 4: Removing Front Drive Axle Yoke

Fig. 5: Removing Pinion Seal
INSTALLATION
Using Seal Installer (J22661), drive new seal into front
differential housing. See Fig. 6. Tighten yoke attaching nut to 210
ft. lbs. (285 N.m). Using NEW strap bolts, align and install drive
shaft. Tighten strap bolts to 14 ft. lbs. (19 N.m). Fill differential
with SAE 75W-90 gear lubricant.