1988 JEEP CHEROKEE Split ring

Fig. 2: Exploded View of Split Case (4-Pinion)
2) Drive vehicle over formica board until one rear wheel is
in the center of board and paper. Place a block of wood 2" high and a
minimum of 3" wide in front of one of the front wheels.
3) Open throttle gradually attempting to slowly drive vehicle
over block of wood. If paper slips out of position, reposition paper
and repeat test. If vehicle drives over block of wood, axle is
functioning properly.
DANA 4-PINION POWER-LOK
1) With engine off and transmission in "N", raise one wheel
off ground. Block both front and rear wheels of opposite side. Install
adapter tool across 2 wheel studs and attach torque wrench to center
of tool.
2) Observe torque required to continuously turn wheel
smoothly through several revolutions. Repeat test for opposite side.
If differential is okay, torque should be 40-200 ft. lbs. (54-272 N.
m). Disregard breakaway torque. Use rotating torque only.
NOTE: Exploded view of Chrysler Motors Trac-Lok differential was
not available from manufacturer.
REMOVAL & INSTALLATION
See DANA SEMI-FLOATING or FULL-FLOATING AXLE article in this
section.
OVERHAUL
DANA 2-PINION TRAC-LOK
NOTE: For front axle shaft and bearing removal, see articles on
DANA FULL-FLOATING AXLES or 4WD STEERING KNUCKLES in this
section. With the exception of ring gear and differential
side bearings, Chrysler Motors does not recommend disassembly
of differential. If repair is required, manufacturer
recommends replacing entire unit as an assembly.
Disassembly (Jeep)
1) Using 2 screwdrivers, remove pinion snap rings. Using a
brass drift and a hammer, remove pinion shaft from case. Install Step

Scored .................. B ............ Require replacement.
Spring rate less than
specifications ......... B ............ Require replacement.
Worn, affecting
performance ............ A ............ Require replacement.
Worn beyond
specifications ......... B ............ Require replacement.
Worn close to the end of
its useful life ........ 1 ............ Suggest replacement.









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PRESSURE SWITCHES
See SWITCHES.
RACES
See BEARINGS AND RACES .
RUBBER JOINTS (METALASTIC)
These joints may be found on half and/or drive shafts. They
are usually found on European vehicles featuring a three-lug drive
flange. They may be equipped with a centering ball or pin.
RUBBER JOINT (METALASTIC) INSPECTION









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Condition Code Procedure
Drive flange bent ....... A ............. Require repair or
replacement.
Drive flange damaged,
affecting performance .. A ............ Require replacement.
Rubber drive joint
cracked ................ 2 ............ Suggest replacement.
Rubber drive joint
damaged, affecting
performance ............ A ............ Require replacement.
Rubber drive joint split
between mounting holes . A ............ Require replacement.
Rubber drive joint torn at
mounting holes ......... A ............ Require replacement.
Rubber drive joint weather-
cracked ................ .. ........ No service suggested or
required.









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SCREENS
See FILTERS AND SCREENS .
SEALS
SEAL INSPECTION








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Condition Code Procedure
Leaking ................. A ........... ( 1) Require repair or
replacement.
( 1) - Require inspection of mating and sealing surface and
repair or replace as necessary. Check vent. A plugged

lightly into its seat. Using seal installer, fully seat seal in
bearing cap or cylinder block.
Trim seal ends even with block parting surface. Some
applications require sealer to be applied on main bearing cap prior
to installation. See Fig. 28.
Fig. 28: Typical Rope Seal Installation
This Graphic For General Information Only
Split-Rubber Type Seal
Follow manufacturers procedures when installing split-rubber
type rear main oil seals. Installation procedures vary with engine
type. See appropriate ENGINE article in this section. See Fig. 29.
Fig. 29: Typical Split-Rubber Seal Installation
This Graphic For General Information Only
OIL PUMP

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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Condition Code Procedure
Attaching hardware
bent .................. B .... Require repair or replacement
of bent part.
Attaching hardware
broken ................ A .... Require replacement of broken
part.
Attaching hardware
corroded, affecting
structural integrity .. A .. Require replacement of corroded
part.
Attaching hardware
incorrect ............. A ........... Require replacement of
incorrect part.
Attaching hardware
loose ................. A .... Require repair or replacement
of loose part.
Attaching hardware
missing ............... C ... Require replacement of missing
part.
Attaching hardware
threads damaged ....... A .... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) ..... A ...... Require replacement of part
with stripped threads.
Broken (all springs
except secondary
leave(s) on multi-leaf
springs) .............. A ............. Require replacement.
Coil clash ............. .. .. (1) Require ride height check.
Coil spring insulator
deteriorated .......... 2 ........... Suggest replacement of
insulator.
Coil spring insulator
missing ............... 2 ........... Suggest replacement of
insulator.
Coil spring insulator
split ................. 2 ........... Suggest replacement of
insulator.
Coil spring plastic
coating deteriorated -
rust present .......... A ...... ( 2) Refer to manufacturer's
service requirements.
Composite spring
damaged ............... .. .......... ( 3) Further inspection
required.
Cracked (all springs
except composite leaf and
secondary leave(s) on
multi-leaf springs) ... A ............. Require replacement.
Installed incorrectly .. B .................. Require repair.
Leaf spring insulators
missing ............... 2 ........... Suggest replacement of
insulators.
Secondary leaf on multi-
leaf spring broken .... 1 .... Suggest repair or replacement
Secondary leaf on multi-
leaf spring cracked ... 1 .... Suggest repair or replacement
Torsion bar

replace steering damper.
Attaching hardware
corroded, affecting
structural integrity ... A . Require replacement of corroded
part, if available; otherwise,
replace steering damper.
Attaching hardware
incorrect .............. A .......... Require replacement of
incorrect part, if available;
otherwise, replace steering
damper.
Attaching hardware
loose .................. A ... Require repair or replacement
of loose part, if available;
otherwise, replace steering
damper.
Attaching hardware
missing ................ C .. Require replacement of missing
part, if available; otherwise,
replace steering damper.
Attaching hardware
threads damaged ........ A ... Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace steering damper.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads, if
available; otherwise, replace
steering damper.
Binding ................. A ............ Require replacement.
Damper body dented ...... A .......... (1) Further inspection
required.
Damper body punctured ... A ............ Require replacement.
Damping (none) .......... A ............ Require replacement.
Dust boot (bellows)
missing ................ 2 ......... ( 2) Suggest replacement
of boot.
Dust boot (bellows)
split .................. 2 ......... ( 2) Suggest replacement
of boot.
Dust shield broken ...... 2 ........ ( 2) Suggest replacement.
Dust shield missing ..... 2 ........ ( 2) Suggest replacement.
Leaking oil, enough for
fluid to be running
down the body .......... A ............ Require replacement.
Loose ................... A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Noise ................... 2 .......... ( 3) Further inspection
required.
Piston rod bent ......... A ............ Require replacement.
Piston rod broken ....... A ............ Require replacement.
Piston rod has surface
defect ................. 2 ............ Suggest replacement.
Piston rod threads
stripped (threads
missing) ............... A ............ Require replacement.
Piston rod threads
damaged ................ A .. Require repair or replacement.
Seized .................. A ............ Require replacement.
( 1) - Require replacement of units where dents restrict damper

be caused by
faulty alignment ....... A ............. Require alignment.
Part has been changed,
affecting alignment .... A ....... Require alignment check.
Pull, shown to be caused
by faulty alignment .... A ............. Require alignment.
Steering wheel
off-center ............. 2 ............. Suggest alignment.
Tire wear, shown
to be caused by
faulty alignment ....... A ............. Require alignment.
Wander, shown
to be caused by
faulty alignment ....... A ............. Require alignment.









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WHEELS AND TIRES
TIRES
These guidelines do not apply to split rims. Some vehicle
manufacturers restrict replacement of tires to specific brands, types,
or sizes.
WARNING: High pressure temporary compact spare tires should not be
used with any other rims or wheels, nor should standard
tires, snow tires, wheel covers, or trim rings be used
with high pressure compact spare rims or wheels.
Attempting to mount a tire of one diameter on a wheel of
a different diameter or flange type may result in serious
injury or death.
WARNING: Only specially trained persons should dismount or mount
tires. Explosions of tire and wheel assembly can result
from improper mounting, possibly causing serious injury
or death.
WARNING: Consult the vehicle owner's manual or vehicle placard for
correct size, speed rating, designation, and cold
inflation pressure of the original tires. DO NOT exceed
the maximum load or inflation capacity of the tire
specified by the Tire and Rim Association
WARNING: When replacing tires, it is suggested that the
replacement tires match or exceed the OEM speed rating
designation. If tires of different speed rating
designations are mixed on the same vehicle, the tires may
vary in handling characteristics. DO NOT mix different
speed rating designations on the same axle.
WARNING: DO NOT mix radials with non-radial tires on the same
axle, as this may affect vehicle handling and stability.
If radial tires and bias or bias-belted ply tires are
mixed on the same vehicle, the radials must be on the
rear. High-pressure temporary compact spare tires are
exempt from this rule.
WARNING: DO NOT mix size or type (all season, performance, mud and
snow) of tires on the same axle.
TIRE INSPECTION









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Fig. 1: Exploded View Of 2WD Hub/Rotor Assembly & 4WD
Hub/Bearing Carrier Assembly
Courtesy of Chrysler Motors.
SHOCK ABSORBER
Removal & Installation
1) With vehicle at normal riding height, remove nut, washer,
and rubber grommet from top of shock absorber. Note component
locations for reassembly reference.
2) Raise and support vehicle. Remove lower shock mounting
bolts from axle housing bracket. Remove shock absorber. Inspect units
for damage or leakage. Replace shock absorbers in pairs only. To
install, reverse removal procedure.
STEERING KNUCKLE
Removal
1) Raise and support vehicle. Remove wheel assembly. Remove
brake caliper. Suspend caliper with wire. Remove brake rotor or
hub/bearing carrier assembly. See WHEEL BEARINGS in this article.
2) Remove axle shaft from left side of axle housing. To
remove right axle shaft, disconnect vacuum harness from shift motor.
Remove shift motor and axle shaft from housing. Remove caliper anchor
plate from steering knuckle.
3) On each steering knuckle, remove ball joint stud cotter
pin and retaining nuts. Using brass hammer, strike steering knuckle
at ball joint stud bore area to loosen ball joint from steering
knuckle.
4) Inspect split ring seat in steering knuckle ball joint
stud bore for damage. If damaged, use Split Ring Seat
Remover/Installer to remove split ring seat.