1988 JEEP CHEROKEE battery

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.

STE ER IN G C O LU M N

1988 J e ep C hero ke e
1988 STEERING
Jeep Steering Columns
All Models
DESCRIPTION
All models use collapsible steering columns. All columns have
integral ignition switch and locking device. Optional tilt wheel is
available with both A/T and M/T. Transmission shift linkage is
integral on all models except those with floor shift.
TROUBLE SHOOTING
Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the
GENERAL TROUBLE SHOOTING section.
REMOVAL & INSTALLATION
NOTE: Steering column removal and installation procedures refer to
all manufacturers. Not all procedures, however, apply to all
models.
STEERING COLUMN (COLUMN SHIFT)
Removal
1) Disconnect battery negative cable. Disconnect transmission
shift cable rod by prying rod from grommet in shift lever. Remove
cable clip. Remove cable from lower bracket.
2) Disconnect, as equipped, either the flexible coupling,
"Pot" coupling or "U" joint from pinion shaft.
3) Disconnect wiring connectors at column jacket. Remove
steering wheel and horn pad. See STEERING WHEEL & HORN REMOVAL
article. Remove damper assembly (if equipped). On RWD models, remove
turn signal lever.
4) On all models, remove steering column-to-floor pan
attaching screws. Expose steering column bracket. Remove instrument
panel steering column cover. Lower reinforcement. Disconnect bezel.
Remove indicator set screw and gearshift pointer from shift housing.
5) Remove steering column bracket-to-instrument panel
attaching nuts. Lower support bracket. Firmly grasp steering column
assembly and pull rearward while disconnecting lower stub shaft from
pinion shaft coupling.
NOTE: On vehicles equipped with cruise control and M/T, take care
not to damage clutch pedal cruise control switch.

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.

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

STE ER IN G W HEEL & H O RN R EM OVA L

1988 J e ep C hero ke e
1988 STEERING
Jeep Horn & Steering Wheel Removal
All Models
* PLEASE READ THIS FIRST *
NOTE: For removal and installation procedures of column mounted
switches, see STEERING COLUMN SWITCHES article in the
STEERING section.
REMOVAL & INSTALLATION
HORN BUTTON
Removal & Installation
1) Disconnect negative battery cable. Place wheels in
straight-ahead position. On models with standard steering wheel,
remove horn button retaining screws from rear of steering wheel.
2) On models with sport steering wheel, remove horn button by
pulling button upward. On all models, remove horn internal components.
Place components in order of removal. To install, reverse removal
procedure.
STEERING WHEEL
CAUTION: Some steering wheel shaft nuts have metric threads. Metric
threads have an identification groove cut perpendicular to
steering wheel splines. Standard threads do not have groove.
Removal & Installation (Grand Wagoneer)
1) Remove horn button. Disconnect horn wire at steering wheel
switch. Unseat horn wire and spring retainer at the canceling cam
yoke. Remove wire, retainer and spring as an assembly.
2) On vehicles with sport steering wheel, remove receiver
bushing retaining screws. Remove bushing, horn button receiver and
contact plate. On all models, remove steering wheel retaining nut.
3) Mark steering wheel and shaft for reassembly reference.
Using Steering Wheel Puller (J-21232), remove steering wheel. To
install, reverse removal procedure. Align marks made during removal.
Removal & Installation (All Others)
Remove horn button. Remove steering wheel retaining nut. Mark
steering wheel and shaft for reassembly reference. Using Steering
Wheel Puller (J-21232), remove steering wheel. To install, reverse
removal procedure. Align reference marks.
TROUBLE SHOOTING
Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the
GENERAL TROUBLE SHOOTING section.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE








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Application Ft. Lbs. (N.m)

Will Not Shift Or Difficult To Shift Into Gear
Vehicle speed too high; slow vehicle to 2-3 MPH to shift.
Vehicle operated too long on dry paved surface; stop vehicle and place
in Reverse or Neutral to relieve driveline torque. Ensure transfer
case external linkage is not binding. Ensure correct fluid is used.
Internal parts may be worn or damaged.
Noisy In All Gears
Check fluid level. Ensure correct fluid is used. If fluid is
okay, locate possible internal mechanical problem.
Jumps Out Of Gear Or Noisy In 4WD
Transfer case not completely in gear; check shift linkage.
Range fork damaged. Shift fork pads are worn or shift fork binding.
Low range gear worn.
Fluid Leaking From Vent Or Seals
Transfer case overfilled. Vent plugged. Output shaft seals
are damaged or not installed properly.
ON-VEHICLE SERVICE
FRONT OIL SEAL
Removal & Installation
1) Mark front drive shaft and flange for installation
alignment reference. Remove front drive shaft. Remove flange. Discard
washer and nut. Using a screwdriver, carefully remove oil seal. Ensure
seal contact surface is clean.
2) Apply ATF to seal lip and flange seal surface. Install NEW
oil seal. Install flange and NEW washer and nut. Tighten nut to
specifications. See TORQUE SPECIFICATIONS . Install front drive shaft
using alignment marks. Check transfer case fluid.
EXTENSION HOUSING OIL SEAL & BUSHING
Removal & Installation
1) Mark rear drive shaft and flange for installation
alignment reference. Remove rear drive shaft. Tap extension housing in
a clockwise direction and remove extension housing. DO NOT pry on
extension housing. Using a screwdriver, remove oil seal from extension
housing.
2) Using bushing driver, replace bushing in extension
housing. Install NEW extension housing oil seal. Apply silicone
sealant to extension housing mating surface. Install extension
housing. To complete installation, reverse removal procedure.
REMOVAL & INSTALLATION
TRANSFER CASE
Removal
1) Shift transfer case into 4H and disconnect battery
negative cable. Raise vehicle, remove skid plate and drain fluid.
2) Mark front and rear output shaft yokes to drive shafts for
reassembly reference. Support transfer case and remove rear
crossmember. Remove drive shafts.
3) Disconnect vehicle speed sensor electrical connector and
vacuum (hoses) harness at transfer case. Remove shift lever or linkage\
rod from case. Remove transfer case attaching bolts. Remove transfer
case from vehicle.

Installation
1) Clean all old gasket material from transmission and
transfer case mating surfaces. Position NEW gasket on transfer case
with orientation tab at upper left bolt hole.
2) Install transfer case, aligning splines of input shaft
with transmission. Slide transfer case forward until seated against
transmission. Install transfer case attaching bolts and tighten to
specification. See TORQUE SPECIFICATIONS . Install rear crossmember.
3) Attach shift lever and connect speed sensor electrical
connector and vacuum harness at transfer case. Using reference marks
made during removal, reinstall front and rear drive shafts. Refill
transfer case. Install skid plate and lower vehicle. Connect negative
battery cable. Road test vehicle.
TRANSFER CASE DISASSEMBLY
1) Remove front companion yoke. See Fig. 2 or 3. Discard
washer and nut. Shift transfer case to 4L and remove extension
housing. Remove rear bearing snap ring. Using 2 screwdrivers under
each tab, remove retainer housing. Remove rear case and oil pump as an
assembly.
2) Remove oil pump pick-up screen and tube from rear case.
Remove oil pump. Remove "O" ring from oil pump and discard. DO NOT
separate oil pump halves. Pump must be replaced as an assembly if
necessary.
3) Remove mode spring. Using a soft hammer, tap front output
shaft upward and remove with drive chain as an assembly. Remove
mainshaft, mode fork and shift rail as an assembly. Remove mode fork
and shift rail from synchronizer sleeve.
4) Mark synchronizer sleeve position for reassembly
reference. Remove synchronizer sleeve from mainshaft. Remove
synchronizer hub snap ring. Remove synchronizer hub, stop ring and
drive sprocket. Slide range fork pin out of sector.
5) Remove range fork and shift hub as an assembly. Remove
range lever from sector shaft. Remove shift sector, bushing and "O"
ring. Remove shift detent pin, spring and plug. Remove front bearing
retainer. Remove input gear snap ring.
6) Press input and low range gear assembly from input gear
bearing. Remove low range gear snap ring. Remove input gear retainer,
thrust washers and input gear from low range gear.
7) Remove all oil seals. Remove magnet from front case.
Remove front bearing snap ring. Using a plastic hammer, remove front
bearing. Press input gear bearing from front case.
8) Using slide hammer and internal puller, remove input gear
pilot bearing. Press bearings from drive sprocket. Using internal
puller and slide hammer, remove output shaft rear bearing.

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TR O UBLE S H O OTIN G - B ASIC P R O CED URES

1988 J e ep C hero ke e
GENERAL TROUBLE SHOOTING
* PLEASE READ THIS FIRST *
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
ACCESSORIES & ELECTRICAL
CHARGING SYSTEM TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC CHARGING SYSTEM TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE CORRECTION








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Vehicle Will Not Dead battery Check battery cells,
Start alternator belt
tension and alternator
output
Loose or corroded battery Check all charging
connections system connections
Ignition circuit or switch Check and replace as
malfunction necessary









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Alternator Light Loose or worn alternator Check alternator drive
Stays On With drive belt tension and
Engine Running condition, See Belt
Adjustment in TUNE-UP
article in the
TUNE-UP section
Loose alternator wiring Check all charging
connections system connections
Short in alternator light See Indicator Warning
wiring Lights in STANDARD
INSTRUMENTS in the
ACCESSORIES &
EQUIPMENT section
Defective alternator stator See Bench Tests in
or diodes ALTERNATOR article
Defective regulator See Regulator Check in