1988 JEEP CHEROKEE horn
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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.
Page 1120 of 1378
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)
Page 1279 of 1378
Column not correctly See STEERING COLUMNS
aligned article
Broken lower joint Replace joint
Horn contact ring not See STEERING COLUMN
article
Bearing not lubricated See STEERING COLUMN
article
Shaft snap ring not Reseat or replace snap
properly seated ring
Plastic spherical joint See STEERING COLUMN
not lubricated article
Shroud or housing loose Tighten holding screws
Lock plate retaining See STEERING COLUMN
ring not seated article
Loose sight shield Tighten holding screws
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High Steering Column assembly See STEERING COLUMN
Shaft Effort misaligned article
Improperly installed dust Adjust or replace
shield
Tight steering universal See STEERING COLUMN
joint article
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High Shift Column is out of See STEERING COLUMN
Effort alignment article
Improperly installed Adjust or replace
dust shield
Seals or bearings not See STEERING COLUMNS
lubricated article
Mounting bracket screws Replace with new
too long shorter screws
Burrs on shift tube Remove burrs or replace
tube
Lower bowl bearing See STEERING COLUMN
assembled wrong article
Shift tube bent or broken Replace as necessary
Improper adjustment of See STEERING COLUMN
shift levers article
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Improper Trans. Sheared shift tube joint Replace as necessary
Shifting
Sheared lower shaft lever Replace as necessary
Improper shift lever See STEERING COLUMN
adjustment article
Page 1369 of 1378
WIR IN G D IA G RAM S
1988 J e ep C hero ke e
1988 Wiring Diagrams
Jeep
Cherokee & Wagoneer
IDENTIFICATION
COMPONENT LOCATION MENU
COMPONENT LOCATIONS TABLE \
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Component Figure No. (Location)
A/C & Htr Systems ............................... 5 (A-D 16-19)
Alternator ............................................ 1 (C 3)
Audio Alarm Module ................................... 7 (D 27)
Back-Up Lt Sw (M/T) .................................. 4 (D 12)
Battery ............................................... 1 (A 2)
Beam Sel Sw .......................................... 6 (E 23)
Brake Warning Sw ..................................... 6 (C 20)
Clock ................................................ 7 (E 27)
Clutch Switch ........................................ 4 (E 15)
Courtesy Lights ................................... 7 (C 24-26)
Cruise Ctrl Sys ................................... 4 (E 12-15)
Diag Conn D1 (2.5L) ................................... 3 (B 9)
Diag Conn D1 (4.0L) ................................... 2 (B 4)
Diag Conn D2 (2.5L) .................................. 3 (B 11)
Diag Conn D2 (4.0L) ................................... 2 (B 7)
DIR Hazard Sw ................................... 6 (D-E 20-21)
Door Switches ........................................ 7 (C 27)
Elect Ctrl Unit (2.5L) ............................. 3 (A 9-10)
Elect Ctrl Unit (4.0L) .............................. 2 (A 4-7)
Engine Compartment Lt ................................. 1 (C 1)
Fog Light Relay ....................................... 1 (D 2)
Fog Light Sw ...................................... 6 (E 21-22)
Fuel Pump Rly (2.5L) .................................. 3 (C 9)
Fuel Pump Rly (4.0L) ................................ 2 (E 5-6)
Fuel Tank Unit ....................................... 6 (B 20)
Fus Links ........................................... 1 (B 2-3)
Fuse Block ...................................... 4 (B-D 12-15)
4WD Switch ..................................... 6 (C 20, D 21)
Gear Sel Sw .......................................... 5 (C 16)
Glove Box Light ...................................... 7 (C 25)
Headlight Delay Module ............................... 6 (E 23)
Headlight Switch .................................. 6 (D 22-23)
Horn Relay ............................................ 1 (C 2)
Ignition Ctrl Mod (2.5L) ............................ 3 (B-C 8)
Ignition Ctrl Module (4.0L) ........................... 2 (E 4)
Ignition Key Warn Sw ................................. 7 (D 26)
Ignition Switch ................................... 4 (A 12-15)
Illum Lights .................................... 7 (C-D 24-25)
Instrument Cluster .............................. 6 (A-C 22-23)
Keyless Entry Module .............................. 7 (B 24-25)
Latch Rly (B+) (4.0L) ............................... 2 (B-C 4)
Power Antenna Rly .................................. 7 (D-E 27)
Power/Comfort Sw ..................................... 5 (D 19)
Power Door Lock Sys ............................. 7 (A-C 24-27)
Power Mirror Sw ................................. 7 (D-E 24-25)
Power Seat Sw ................................... 8 (A-B 28-29)