clock JEEP CHEROKEE 1988 Service User Guide

clockwise until key stops. Insert cylinder lock into bore with
cylinder tab aligned with keyway in housing. Push cylinder in until it
bottoms. Rotate cylinder counterclockwise to engage lock sector, and
push in until cylinder tab engages in housing groove.
IGNITION SWITCH
Removal
Lower column and remove switch mounting screws. Disconnect
harness connector. Remove switch.
Installation
Move switch slider to "ACC" position. Move switch slider back
2 clicks to "OFF-UNLOCK" position. Insert remote rod in switch slider,
and position switch on column. Do not move slider. Install and tighten
screws.
Fig. 2: Rod-Actuated Ignition Switch

Removal
1) Disconnect the battery negative cable.
2) On vehicles equipped with A/C, remove the electrical
cooling fan and shroud assembly from the radiator to allow room to
rotate the engine with a socket and ratchet using the vibration damper
bolt.
3) Scribe a mark on the distributor housing below the left
side (past) the number one spark plug wire post of the distributor cap\
for reassembly reference for No 1 cylinder firing position.
4) Remove the distributor cap.
5) Turn the engine in a clockwise direction until the rotor
is approaching the scribed mark on the distributor housing. Then
slowly turn the engine until the timing mark on the crankshaft
vibration damper lines up with zero on the front cover timing scale.
See Fig. 24 .
NOTE: The timing mark is located on the edge of the vibration
damper closest to the front cover.
Fig. 24: View of Crankshaft Vibration Damper Timing Marks
Courtesy of Chrysler Motors.
6) Align the trailing edge of the rotor blade with the mark
previously scribed on the distributor housing. See Fig. 25.

Installation
1) If needed, use a flat blade screwdriver to turn the oil
pump gear shaft until the slot is slightly past the 11 o'clock
position. See Fig. 26. The oil pump shaft is located down in the
distributor hole.
Fig. 26: Aligning Oil Pump Gear Shaft
Courtesy of Chrysler Motors.
2) Install the rotor.
3) Without engaging the distributor gear into the cam gear
and ensuring the distributor gasket is installed, position the
distributor into the hole in the engine block.
4) Visually line up the hold down ear of the distributor
housing with the hold down clamp hole. See Fig. 27.
Fig. 27: Installing Distributor
Courtesy of Chrysler Motors.
5) Turn the rotor to the 4 o'clock position. See Fig. 28.

Fig. 28: Installing & Aligning Rotor
Courtesy of Chrysler Motors.
6) Carefully slide the distributor into the block until it
seats, keeping the hold down ear aligned to the hole in the block.
7) The rotor should be in the 5 o'clock position with the
trailing edge of the rotor blade lined up with the mark previously
scribed on the distributor housing (number one spark plug wire post
location).
8) install the distributor hold-down clamp bolt and tighten
to 9.5-14 Ft. Lbs. (13-19 N.m).
9) Install the distributor cap. Connect the distributor
electrical connector.
10) Install the electric cooling fan and shroud if
applicable.
11) Connect the negative battery cable.
IGNITION/COIL WIRE REPLACEMENT PRECAUTIONS

1 - 25 Amp
Rear Washer/Wiper
2 - 15 Amp
Radio, Cigarette Lighter
3 - 25 Amp
Blower Motor
4 - 20 Amp
Turn Signal, Back-Up Lights, Rear Window Defogger Relay
5 - 10 Amp
Dome Light, Courtesy Lights, Glove Box Light, Cargo Light,
Radio Memory, Power Mirrors, Teltak Connector
6 - 15 Amp
Hazard Warning System, Stoplights
7 - 10 Amp
Parking Lights, Headlight Warning Chime/Buzzer, Instrument
Panel Light Dimmer
8 - 7.5 Amp
Gauges, Instrument Cluster, Seat Belt Warning,
Headlight Delay, Chime Module, Overhead Console
9 - 5 Amp
Instrument Panel Illumination
10 - 25 Amp
Rear Window Defogger
11 - 30 Amp (Circuit Breaker)
Power Door Locks, Power Seats, Trailer Towing Wiring Harness
12 - 10 Amp
ETR Radio, Power Antenna
13 - Not Used (1984-87)
7.5 Amp (1988)
Transmission Control Unit
14 - 25 Amp
Headlight Delay, Horns, Security Alarm
15 - 5.5 Amp (Circuit Breaker)
Front Wiper
16 - 30 Amp (Circuit Breaker)
Power Windows
17 - 10 Amp
Clock, Security Alarm (IGN)

\003
STA R TE R - B O SC H/M IT S U BIS H I

1 988 J e ep C hero ke e
1988 Starters
BOSCH & MITSUBISHI
Jeep with 4.0L 6-Cyl.
DESCRIPTION
NOTE: Information on Jeep 2.5L starter not available from
manufacturer.
Bosch and Mitsubishi use a permanent magnet starter. A
planetary gear train transmits power between starter motor and pinion
shaft. The starter magnetic field is produced by 6 permanent magnets.
The Mitsubishi starter is a 12-volt unit that has the solenoid mounted
on the starter housing. See Fig. 3.
TROUBLE SHOOTING
NOTE: See the TROUBLE SHOOTING - BASIC PROCEDURES article
in the GENERAL TROUBLE SHOOTING section.
TESTING (ON VEHICLE)
AMPERAGE DRAW TEST
NOTE: Engine should be at operating temperature before performing
this test. Heavy duty oil or a tight engine will increase
starter draw amperage. Tests are performed with standard
volt-ammeter tester.
1) Connect tester and remote starter switch. Set voltmeter
selector to 16-volt position. Select function to 0-500-amp scale.
Connect voltmeter leads to corresponding polarity battery terminals.
2) Connect ammeter leads to corresponding battery terminals.
Disconnect coil wire from distributor cap and attach to ground to
prevent engine from starting.
3) Crank engine and observe exact reading on voltmeter. Stop
cranking engine. Turn tester control knob clockwise until voltmeter
reads exactly the same as when engine was cranked with remote starter
switch. Ammeter should indicate starter draw of about 150-220 amps.
STARTER RESISTANCE TEST
Use a voltmeter that will indicate tenths of a volt. Without
disconnecting any starter connections, perform the following
resistance tests:
1) Perform following tests with engine cranking and all
terminals connected. Connect a voltmeter at following locations:
* Positive lead to battery positive post and negative lead
to battery terminal on starter.
* Positive lead to starter housing and negative lead to
negative post on battery.
* Positive lead to battery negative post and negative lead
to battery cable connector on engine block.
2) Each of these 3 connections should show a voltmeter

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.

Fig. 1: Removing Jeep Lock Cylinder
Courtesy of Chrysler Motors
Installation
1) To install, insert key in lock cylinder. Hold cylinder
sleeve while turning key clockwise until key stops. Align lock
cylinder retaining tab with keyway in housing. Insert cylinder into
housing.
2) Push lock cylinder inward until it contacts lock sector.
Rotate cylinder to engage it with lock sector. Push lock cylinder
inward until cylinder retaining tab engages in housing groove. To
complete installation, reverse removal procedure.
IGNITION SWITCH
Removal (Cherokee, Wagoneer & Wrangler)
Remove lower instrument panel trim panel. Insert key in lock

* The lock inhibitor assembly consists of a lever that engages
lock levers (preventing locking of steering shaft), a button
to operate lever and a return spring. Assembly is attached to
lock housing in same location as shift gate is on column
shift. Lower steering shaft bearing is mounted in an aluminum
support.
* A spring is attached between shift housing and column jacket.
This spring keeps housing rotated counterclockwise against
rubber bumper.
OVERHAUL
STANDARD COLUMN
NOTE: All columns are similar except for appearance of covers.
Some models use ignition key light, while others do not.
Disassembly and reassembly procedures cover all models. Some
procedures may not apply to every steering column.
Disassembly
1) Pry out wiring trough retainers. Lift off trough. New
retainers may be required for reassembly. Use masking tape to protect
paint and a deep socket to back-up housing. Drive retaining roll pin
out with a punch to remove shift lever.
2) Remove breakaway capsules. Secure column in vise by
clamping at column bracket. DO NOT distort column. Remove turn signal
lever cover-to-lock housing attaching screws. Remove cover. Remove
wiper/washer switch assembly. Pull switch cover up wiper/washer lever.
Remove lever sleeve-to-switch attaching screws.
3) Rotate wiper/washer shaft to full clockwise position.
Remove shaft from switch. Remove turn signal switch and upper bearing
retaining screws. Remove retainer. Lift switch upward out of way.
Unclip horn ground wire. Remove ignition key light retaining screw.
Lift ignition key light out of way.
4) Remove bearing housing-to-lock attaching screws. Remove
snap ring from upper end of steering shaft. Remove bearing housing
from shaft. Remove lock plate spring and lock plate from shaft. Remove
shaft through lower end of column.
5) Remove ignition key. Remove warning switch retaining
screw. Lift out key warning switch. Remove 2 ignition switch-to-column
jacket retaining screws. See Fig. 2. Remove ignition switch by
rotating switch 90 degrees on actuator rod. Remove 2 dimmer switch
retaining screws. Disengage dimmer switch from rod.

1) Remove lower bracket assembly-to-lower bearing support
bolts. On column shift models, remove shift housing cover. On floor
shift models, unsnap and remove shroud extensions. Remove wiring
protector from column jacket.
2) Mount column in vise at capsule bracket. Mount Holding
Fixture (C-4132) onto column. Mount holding fixture and column in
vise.
3) Remove tilt lever. To remove hazard warning knob, push in
knob while unscrewing. Remove ignition key light assembly. Pull knob
off wiper/washer switch assembly. Pull hider up switch lever. Remove 2
sleeve-to-wiper/washer switch retaining screws. Remove sleeve.
4) Rotate shaft in wiper switch fully clockwise. Remove shaft
by pulling straight out of wiper/washer switch. Carefully remove
plastic cover from lock plate. Using Lock Plate Depressor (J-23653-A
for Jeep), depress lock plate. Pry retaining ring from groove.
5) Remove lock plate, canceling cam and upper bearing plate.
Remove switch actuator screw and arm. Remove 3 turn signal switch
attaching screws. Place shift bowl in "LOW" position. Wrap a piece of
tape around wires to prevent snagging when removing switch. Remove
switch and wiring.
6) Remove key light. Place lock cylinder in "LOCK" position.
Insert a small screwdriver into slot next to switch mounting screw
boss. Depress spring latch at bottom of slot. Remove lock.
7) Using a paper clip, remove key warning switch. Bend one
end of clip into a hook. Insert hook into exposed loop of wedge
spring. Pull clip. Remove spring and switch. DO NOT allow spring to
fall into steering column.
8) Remove 3 housing cover screws. Remove housing cover.
Remove wiper/washer switch. Using a punch, press out wiper switch
pivot pin (if necessary). Tilt lever opening shield and dimmer switch
actuator rod may be removed from cap (if necessary).
9) Place column in fully upright position. Using a large
Phillips screwdriver, remove tilt spring retainer. Insert screwdriver
in opening. Push in approximately 3/16". Turn approximately 1/8 turn
clockwise until ears align with grooves in housing. Remove spring and
guide.
10) Remove dimmer switch mounting screws. Remove dimmer
switch. Separate dimmer switch from rod by pulling on rod. Push upper
steering shaft in far enough to remove steering shaft inner race seat
and inner race. With ignition switch in "ACC" position, remove
ignition switch mounting screws and switch. Place Pivot Pin Remover
(J-21854-01 for Jeep) over pivot pin. Thread small portion of screw
firmly into pin.
11) Hold screw from turning with one wrench while turning nut
clockwise with a second wrench to withdraw pivot pin from support.
Remove opposite pivot pin in same manner. Use tilt release lever to
disengage lock shoes. Remove bearing housing assembly by pulling
upward to extend rack fully.
12) Move housing assembly left to disengage rack from
actuator. Rotate housing clockwise to free dimmer switch actuator rod.
Remove activator assembly. Remove coupling from lower end of steering
shaft. Double coupling is retained to shaft with a roll pin. Remove
shaft assembly from upper end.
CAUTION: DO NOT drop or bump steering shaft as plastic pins may shear.
13) Disassemble steering shaft assembly by removing center
spheres and anti-lash springs. See Fig. 9. Remove 4 bolts securing
support to lock plate. Remove support from end of column jacket.
Remove 2 attaching screws and shift gate from support (if necessary).
Dimmer switch is removed with support.