boot JEEP CHEROKEE 1988 Service Manual Online
[x] Cancel search | Manufacturer: JEEP, Model Year: 1988, Model line: CHEROKEE, Model: JEEP CHEROKEE 1988Pages: 1378, PDF Size: 19.9 MB
Page 1172 of 1378
Grease seal torn ........ 2 ......... (5) Suggest replacement
of seal.
Greaseable tie rod end
won't take grease ...... 2 ...... ( 6) Suggest replacement of
grease fitting.
Looseness (perceptible
horizontal movement) ... 1 ........ ( 7) Suggest replacement.
Looseness exceeds
manufacturer's
specifications ......... B ............ Require replacement.
Looseness that is
excessive .............. B ..... ( 7)( 8) Require replacement.
Nut on stud loose ....... A ........... ( 9) Require repair or
replacement of nut.
Seized .................. A ............. Require replacement
Stud bent ............... B ....... ( 10) Require replacement.
Stud broken ............. A ....... ( 10) Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped
(threads missing) ...... A ....... ( 10) Require replacement.
( 1) - Only required if toe needs to be adjusted.
( 2) - If greaseable, grease joint. If problem persists or
joint is non-greaseable, require replacement.
( 3) - Cracked grease boot will allow contaminants to enter
joint and will accelerate wear.
( 4) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
( 5) - Torn grease boot will allow contaminants to enter joint
and will accelerate wear.
( 6) - If greaseable tie rod end will not take grease after
replacing the grease fitting, suggest replacement of
tie rod end.
( 7) - If manufacturer's procedures for inspection exist, use
those procedures; otherwise, use an approved inspection
method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket
movement. Use only moderate hand pressure.
( 8) - Excessive looseness is defined as being significant enough
to affect vehicle handling or structural integrity.
( 9) - Check for bent stud or damaged taper hole.
( 10 ) - Check for damaged taper hole.
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TRACK BARS
TRACK BAR INSPECTION \
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Condition Code Procedure
Attaching hardware
incorrect .............. A .......... Require replacement of
incorrect part, if available;
otherwise, replace track bar.
Attaching hardware
loose .................. A ... Require repair or replacement
of loose part, if available;
otherwise, replace track bar.
Attaching hardware
missing ................ C .. Require replacement of missing
part, if available; otherwise,
replace track bar.
Attaching hardware
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threads damaged ........ A ... Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace track bar.
Attaching hardware
threads stripped
(threads missing) ...... A ..... Require replacement of part
with stripped threads, if
available; otherwise, replace
track bar.
Bent .................... B ............ Require replacement.
Corroded, affecting
structural integrity ... A ............ Require replacement.
Grease boot cracked ..... 2 ........ (1) Suggest replacement.
Grease boot missing ..... 2 ........ ( 2) Suggest replacement.
Grease boot torn ........ 2 ........ ( 3) Suggest replacement.
Holes distorted ......... A ............ Require replacement.
Looseness (perceptible
horizontal movement) ... 1 ........ ( 4) Suggest replacement.
Looseness that is
excessive .............. B ..... ( 4)( 5) Require replacement.
Nut on stud loose ....... A ........... ( 6) Require repair or
replacement of nut.
Seized .................. A ............ Require replacement.
Stud bent ............... B ........ ( 7) Require replacement.
Stud broken ............. A ........ ( 7) Require replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ........ ( 7) Require replacement.
Wear exceeds
manufacturer's
specifications ......... B ............ Require replacement.
( 1) - Cracked grease boot will allow contaminants to enter
joint and will accelerate wear.
( 2) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
( 3) - Torn grease boot will allow contaminants to enter joint
and will accelerate wear.
( 4) - If manufacturer's procedures for inspection exist, use
those procedures; otherwise, use an approved inspection
method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket
movement. Use only moderate hand pressure.
( 5) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
( 6) - Check for bent stud or damaged taper hole.
( 7) - Check for damaged taper hole.
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TRAILING ARMS
TRAILING ARM INSPECTION \
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require replacement of broken
part, if available; otherwise,
replace trailing arm.
Attaching hardware
loose .................. A ... Require repair or replacement
of loose part, if available;
Page 1206 of 1378
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TR AN SFE R C ASE - N P/N V 2 42
1988 J e ep C hero ke e
1987-96 TRANSFER CASES
Jeep - New Venture 242
Cherokee, Comanche, Wagoneer, Grand Wagoneer
IDENTIFICATION
Transfer case can be identified by an I.D. tag, located on
rear case. I.D. tag provides model number, serial number and low range
ratio. Date of manufacture is the serial number (I.D. number). This
information is necessary when ordering parts.
DESCRIPTION
Model 242 transfer case is a chain-driven, 2-piece aluminum
case, with full time operation. Torque input in 4WD high and low range
is undifferentiated.
ADJUSTMENTS
GEARSHIFT LINKAGE
Remove shift boot and shift to 4L position. Loosen trunnion
nut. Adjust trunnion and shift rod until rod fits freely. Tighten
trunnion nut and remove shim.
TROUBLE SHOOTING
SYMPTOM DIAGNOSIS
Will Not Shift Or Difficult To Shift Into Gear
Check fluid level. Check linkage adjustment. Ensure transfer
case external linkage is not binding. Internal parts may be worn or
damaged.
Noisy In All Gears
Check fluid level. Ensure correct fluid is used. If fluid is
okay, locate noise and check for possible internal mechanical problem.
Jumps Out Of Gear Or Noisy In 4WD
Transfer case not completely in gear; check shift linkage.
Range fork damaged. Inserts are worn. Shift fork binding on shift
rail. Low range gear worn or damaged.
Fluid Leaking From Vent Or Seals
Transfer case overfilled. Vent plugged. Output shaft seals
are damaged or not installed properly.
Transfer Case Will Not Shift Through High Lock Range
Incomplete shift due to driveline torque load; momentarily
release accelerator pedal to complete shift. Check tire pressure and
tire wear. Vehicle overloaded; remove load and check shifting.
ON-VEHICLE SERVICE
FRONT OIL SEAL
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TR AN SM IS SIO N R EM OVA L & IN STA LLA TIO N - M /T
1988 J e ep C hero ke e
1988 MANUAL TRANSMISSION REMOVAL
Jeep
Cherokee, Comanche, Grand Wagoneer, Pickup, Wagoneer,
Wrangler
REMOVAL & INSTALLATION
TRANSMISSION
Removal
1) Remove screws attaching shift lever boot to floorpan.
Slide boot over lever. On models with T-176 transmission, press and
turn shift lever retainer counterclockwise to release lever.
2) Remove lever, boot, spring and seat as an assembly. On all
models, raise vehicle and support with safety stands. Disconnect rear
drive shaft from transfer case and wire out of way.
3) DO NOT allow shaft to hang free, as damage to universal
joint may result. Disconnect front parking brake cable at equalizer.
Remove rear cable clip from crossmember.
4) Place a jack under clutch housing to support engine.
Remove rear crossmember from frame. Disconnect speedometer cable,
back-up light switch wire and 4WD indicator switch wire.
5) Disconnect transfer case vent hose. Disconnect front drive
shaft and wire out of way. On Wrangler, remove transfer case shift
lever by removing shifter shaft retaining nut.
6) Remove cotter pins retaining shift control link pins in
shift rods and remove pins. Remove shifter shaft and disengage shift
lever from shift control links. Move lever out of the way.
NOTE: On some models, shifter shaft must be unthreaded from shift
lever in order to be removed. On other models, shaft can be
removed by sliding it out of lever.
7) Remove cotter pin and washers connecting link to shift
lever. Separate link from lever. Support transmission and transfer
case with jack.
8) Remove bolts securing transmission to clutch housing and
remove transmission and transfer case. Separate transfer case and
transmission.
Installation
1) Install pilot bushing lubricating wick and align throw out
bearing with splines in driven plate hub. Shift transmission into gear
using shift lever or a long screwdriver. This prevents clutch shaft
from rotating during installation and makes clutch shaft-to-driven
plate spline alignment easier.
2) Mount transmission on transmission jack. Raise
transmission and align transmission clutch shaft with splines in
driven plate hub.
3) When transmission is seated on clutch housing, install and
tighten transmission-to-clutch housing bolts. Apply Permatex No. 3
sealer to both sides of replacement transmission output shaft and
transfer case input shaft splines.
4) To install transmission, reverse removal procedure. Adjust
clutch and shift linkage.
TORQUE SPECIFICATIONS
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![JEEP CHEROKEE 1988 Service Manual Online Defective diodes or stator See Bench Test in
ALTERNATOR article
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\](/img/16/57037/w960_57037-1223.png "JEEP CHEROKEE 1988 Service Manual Online Defective diodes or stator See Bench Test in
ALTERNATOR article
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Defective diodes or stator See Bench Test in
ALTERNATOR article
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Battery Does Loose or worn drive belt Check alternator drive
Stay Charged belt tension and
condition. See
Belt Adjustment in
appropriate TUNE-UP
article in the
TUNE-UP section
Loose or corroded battery Check all charging
connections system connections
Loose alternator connections Check all charging
system connections
Defective alternator or See On-Vehicle Tests
battery and Bench Tests in
ALTERNATOR article
Add-on electrical accessories Install larger
exceeding alternator capacity alternator
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Battery Defective battery Check alternator
Overcharged- output and repair as
Uses Too Much necessary
Water
Defective alternator See On-Vehicle Test and
Bench Tests in
ALTERNATOR article
Excessive alternator voltage Check alternator output
and repair as necessary
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IGNITION 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.
Ignition Secondary Trouble Shooting Chart
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START: Visually inspect Spark Plug Wires, Coil Wires,
Plug Wire Boots, Rotor, and Distributor Cap for
signs of damage.
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OK NOT OK
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* To test secondary ignition * Repair or replace
system, modify a Spark Plug damaged components
by attaching a ground wire as necessary
to the body of the plug and
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Page 1248 of 1378
or alcohol
Intermittent ECM ground Test ECM ground
connection for
resistance
Restricted air cleaner Replace air cleaner
Restricted exhaust system Test for exhaust
manifold back
pressure
Poor MAF sensor signal Check leakage
between sensor and
manifold
Poor VSS signal If tester for ALCL
hook-up is available
check that VSS
reading matches
speedometer
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Ping or Knock on Poor Knock sensor signal Test for shorted or
Acceleration open sensor or
circuit
Poor Baro sensor signal Test for shorted or
open sensor or
circuit
Improper ignition timing See VEHICLE EMISSION
CONTROL LABEL (where
applicable)
Check for engine Low coolant, loose
overheating problems belts or electric
cooling fan
inoperative
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NOTE: For additional electronic fuel injection trouble shooting
information, see the appropriate article in the ENGINE
PERFORMANCE section (not all vehicles have Computer Engine
Control articles). Information is provided there for
diagnosing fuel system problems on vehicles with electronic
fuel injection.
IGNITION 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.
Ignition Secondary Trouble Shooting Chart
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START: Visually inspect Spark Plug Wires, Coil Wires,
Plug Wire Boots, Rotor, and Distributor Cap for
signs of damage.
Page 1271 of 1378
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC FWD AXLE SHAFTS & CV JOINTS TROUBLE SHOOTING CHART
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CONDITION POSSIBLE CAUSE \
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Grease Leaks CV boot torn or cracked \
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Clicking Noise on Cornering Damaged outer CV \
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Clunk Noise on Acceleration Damaged inner CV \
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Vibration or Shudder Sticking, damaged or worn CV
on Acceleration Misalignment or spring height
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STEERING & SUSPENSION
MANUAL STEERING GEAR 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 MANUAL STEERING GEAR TROUBLE SHOOTING CHART
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CONDITION POSSIBLE CAUSE CORRECTION \
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Rattle or Rack and pinion mounting Tighten all mounting
Chucking Noise bracket loose bolts
in Rack and
Pinion Lack of/or incorrect Correct as necessary
lubricant
Steering gear mounting Tighten all mounting
bolts loose bolts
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Excessive Play Front wheel bearing See FRONT SUSPENSION
improperly adjusted article
Loose or worn steering See STEERING LINKAGE
linkage article
Loose or worn steering See MANUAL STEERING
gear shift GEAR article
Steering arm loose on See MANUAL STEERING
gear shaft GEAR article
Steering gear housing Tighten all mounting
bolts loose bolts
Steering gear adjustment See MANUAL STEERING
too loose GEAR article
Steering arms loose on Tighten and check