1988 JEEP CHEROKEE oil level
[x] Cancel search: oil levelPage 1215 of 1378
\003
TR AN SM IS SIO N S ER VIC IN G - A /T
1988 J e ep C hero ke e
1988 Automatic Transmission Servicing
JEEP
LUBRICATION
SERVICE INTERVALS
Transmission
Check fluid level and condition of fluid at each engine oil
change. Under normal, light duty operating conditions, change fluid,
replace filter and adjust bands every 2 yrs. or 25,000 miles. Under
heavy duty service, change fluid, replace filter and adjust bands
every 12 months or 12,500 miles.
Transfer Case
Check transfer case fluid every 12,000 miles and replace
fluid every 30,000 miles.
CHECKING FLUID LEVEL
Transmission
Park vehicle on a level surface and apply parking brake.
With engine idling at normal operating temperature, move transmission
selector lever through all gears, ending in "N" ("P" for AW-4
transmission). Check fluid level. Fluid level should be between
"FULL" and "ADD ONE PINT" mark on dipstick. Add fluid as needed. DO
NOT overfill.
Transfer Case
Remove fill plug. Check oil level. If level is not up to
fill plug opening, add lubricant until it is.
RECOMMENDED FLUID
Both transmissions and transfer cases use DEXRON-II ATF.
FLUID CAPACITY
NOTE: Transmission and converter capacities are approximate. Fluid
level should always be determined by reading on dipstick,
rather than amount of fluid added.
TRANSMISSION REFILL CAPACITIES
\
\
\
\
\
\
\
Application Quantity
All Models
Including Converter ................................ 8.5 qts. (8.0L)\
Without Converter .................................. 4.3 qts. (4.0L)\
\
\
\
\
\
\
\
TRANSFER CASE REFILL CAPACITIES \
\
\
\
\
\
\
Application Capacity
Model 207 ............................................ 4.5 pts. (2.1L)\
Model 208 ............................................ 6.0 pts. (2.8L)\
Page 1216 of 1378
![JEEP CHEROKEE 1988 Service Repair Manual Model 228 ............................................ 7.0 pts. (3.3L)\
Model 229 ............................................ 6.0 pts. (3.8L)\
\
\](/manual-img/16/57037/w960_57037-1215.png "JEEP CHEROKEE 1988 Service Repair Manual Model 228 ............................................ 7.0 pts. (3.3L)\
Model 229 ............................................ 6.0 pts. (3.8L)\
\
\")
Model 228 ............................................ 7.0 pts. (3.3L)\
Model 229 ............................................ 6.0 pts. (3.8L)\
\
\
\
\
\
\
\
DRAINING & REFILLING
Transmission
1) Loosen oil pan bolts, tap pan to break it loose and allow
fluid to drain. Remove pan. Install new filter on bottom of valve
body and tighten retaining screws. Install new "O" ring on fluid
pick-up pipe (if needed). Clean oil pan and install with new gasket.
2) Refill transmission with fluid. Start engine and allow to
run at curb idle for a few minutes. With vehicle on level surface,
engine idling and parking brake applied, move shift selector lever
through all gear ranges, ending in "N" ("P" for AW-4 transmission).
Add fluid up to "ADD ONE PINT" mark on dipstick.
3) Recheck fluid level when transmission reaches normal
operating temperature. Fluid should be between "ADD ONE PINT" and
"FULL" marks on dipstick. Transmission must NOT be overfilled.
Transfer Case
Remove drain plug from transfer case. Remove fill plug for
easier draining. With fluid fully drained, reinstall drain plug. Fill
transfer case to fill plug opening with Dexron II.
ADJUSTMENT
NOTE: Bands on the AW-4 (4-speed overdrive) transmission are not
adjustable. If slippage occurs, bands must be replaced.
KICKDOWN (FRONT) BAND
1) Locate kickdown band adjusting screw on left side of case
(near throttle lever shaft). Loosen adjusting screw lock nut and back
off approximately 5 turns. Ensure adjusting screw turns freely in
case.
2) Using Adapter (J-24063) and 5/16" square socket, tighten
screw to 36 INCH lbs. (4 N.m). If adapter is not used, tighten screw
to 72 INCH lbs. (8 N.m). Back off adjusting screw. See KICKDOWN
(FRONT) BAND ADJUSTMENT table. Hold adjusting screw in position and
tighten lock nut to 35 ft. lbs. (48 N.m).
KICKDOWN (FRONT) BAND ADJUSTMENT
\
\
\
\
\
\
\
Application (1) Back Off Screw\
All Models ............................................... 2 1/2 Turns
(1) - Tighten screw to 72 INCH lbs. (8 N.m) and back off indicated
number of turns.
\
\
\
\
\
\
\
LOW-REVERSE (REAR) BAND
1) Raise vehicle, drain transmission fluid and remove oil
pan. Locate adjusting screw on rear servo lever. Loosen adjusting
screw lock nut and back off about 5 turns.
2) Tighten screw to 41 INCH lbs. (4.6 N.m) and back off
screw at indicated number of turns. See LOW-REVERSE (REAR) BAND
ADJUSTMENT table. Hold adjusting screw in position and tighten lock
nut to 35 ft. lbs. (48 N.m). Install oil pan and fill transmission
Page 1220 of 1378
\003
TR AN SM IS SIO N S ER VIC IN G - M /T
1988 J e ep C hero ke e
1988 MANUAL TRANSMISSION SERVICING
Jeep
Cherokee, Comanche, Grand Wagoneer, Pickup, Wagoneer,
Wrangler
LUBRICATION
SERVICE INTERVALS
Transmission
Under normal driving conditions, check fluid level every 5000
miles or when serviced. Under severe driving conditions, check fluid
level every 3000 miles. Transmission lubricant should be changed at
27,500 mile intervals.
Transfer Case
Check transfer case fluid every 12,000 miles and replace
fluid every 30,000 miles.
CHECKING FLUID LEVEL
Transmission
Check lubricant level at transmission filler plug hole.
Lubricant should be level with bottom of hole. Add lubricant as
needed.
Transfer Case
Remove fill plug. Check oil level. If level is not up to fill
plug opening, add lubricant until it is.
RECOMMENDED FLUID
Transmission
Recommended lubricant for Jeep with manual transmission is
AMC/Jeep Manual Transmission Fluid (89 83 000 000) or 75W-90 GL-5 gear\
lubricant.
Transfer Cases
Transfer cases use DEXRON-II ATF.
FLUID CAPACITY
NOTE: Capacities given are approximate. Correct fluid level should
be determined by level at filler plug hole.
TRANSMISSION REFILL CAPACITIES
\
\
\
\
\
Application Quantity
4-Speed
AX4 .......................... 7.4 pts. (3.5L)
T176 ......................... 3.5 pts. (1.7L)
5-Speed
AX5 .......................... 7.0 pts. (3.3L)
BA 10/5 ...................... 3.5 pts. (1.6L)
\
\
\
\
\
TRANSFER CASE REFILL CAPACITIES
Page 1230 of 1378
![JEEP CHEROKEE 1988 Service Repair Manual Fires With Key Flywheel runout contributes
released. Engine to the intermittent nature
Fires and Cranks
Normally
\
\
\
\](/manual-img/16/57037/w960_57037-1229.png "JEEP CHEROKEE 1988 Service Repair Manual Fires With Key Flywheel runout contributes
released. Engine to the intermittent nature
Fires and Cranks
Normally
\
\
\
\")
Fires With Key Flywheel runout contributes
released. Engine to the intermittent nature
Fires and Cranks
Normally
\
\
\
\
\
\
\
AIR CONDITIONING & HEAT
AIR CONDITIONING TROUBLE SHOOTING
WARNING: 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 AIR CONDITIONING TROUBLE SHOOTING CHART
\
\
\
\
\
\
\
CONDITION POSSIBLE CAUSE \
\
\
\
\
\
\
Compressor Not Working
Compressor clutch circuit open.
Compressor clutch coil inoperative.
Poor clutch ground connection.
Fan belts loose.
Thermostatic switch inoperative.
Thermostatic switch not adjusted.
Ambient temperature switch open.
Superheat fuse blown. \
\
\
\
\
\
\
Excessive Noise or Vibration
Missing or loose mounting bolts.
Bad idler pulley bearings.
Fan belts not tightened correctly.
Compressor clutch contacting body.
Excessive system pressure.
Compressor oil level low.
Damaged clutch bearings.
Damaged reed valves.
Damaged compressor. \
\
\
\
\
\
\
Insufficient or No Cooling;
Compressor Working
Expansion valve inoperative.
Heater control valve stuck open.
Low system pressure.
Blocked condenser fins.
Blocked evaporator fins.
Vacuum system leak.
Vacuum motors inoperative.
Control cables improperly adjusted.
Restricted air inlet.
Mode doors binding.
Blower motor inoperative.
Temperature above system capacity. \
\
\
\
\
\
\
HEATER 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
Page 1231 of 1378
problem symptoms. For model-specific Trouble Shooting,
refer to DIAGNOSTIC, or TESTING articles available in the
section(s) you are accessing.
BASIC HEATER SYSTEM TROUBLE SHOOTING CHART
\
\
\
\
\
\
\
CONDITION POSSIBLE CAUSE \
\
\
\
\
\
\
Insufficient, Erratic,
or No Heat
Low Coolant Level
Incorrect thermostat.
Restricted coolant flow through
heater core.
Heater hoses plugged.
Misadjusted control cable.
Sticking heater control valve.
Vacuum hose leaking.
Vacuum hose blocked.
Vacuum motors inoperative.
Blocked air inlet.
Inoperative heater blower motor.
Oil residue on heater core fins.
Dirt on heater core fins. \
\
\
\
\
\
\
Too Much Heat
Improperly adjusted cables.
Sticking heater control valve.
No vacuum to heater control valve.
Temperature door stuck open. \
\
\
\
\
\
\
Air Flow Changes During
Acceleration
Vacuum system leak.
Bad check valve or reservoir. \
\
\
\
\
\
\
Air From Defroster At All
Times
Vacuum system leak.
Improperly adjusted control cables.
Inoperative vacuum motor. \
\
\
\
\
\
\
Blower Does Not Operate
Correctly
Blown fuse.
Blower motor windings open.
Resistors burned out.
Motor ground connection loose.
Wiring harness connections loose.
Blower motor switch inoperative.
Blower relay inoperative.
Fan binding or foreign object
in housing.
Fan blades broken or bent. \
\
\
\
\
\
\
BRAKES
BRAKE 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.
Page 1238 of 1378
Excessive Oil Worn valve stems or guides Replace stems or
Consumption guides, See ENGINES
Valve "O" ring seals Replace "O" ring seals,
damaged See ENGINES
Plugged oil drain back holes Remove restrictions
Improper PCV valve Replace PCV valve
operation
Engine oil level too high Remove excess oil
Engine oil too thin Replace thicker oil
Valve stem oil deflectors Replace oil deflectors
damaged
Incorrect piston rings Replace piston rings,
See ENGINES
Piston ring gaps not Reinstall piston rings,
staggered See ENGINES
Insufficient piston ring Replace rings, See
tension ENGINES
Piston ring grooves or oil Replace piston rings,
return slots clogged See ENGINES
Piston rings sticking in Replace piston rings,
grooves See ENGINES
Piston ring grooves Replace piston and
excessively worn rings, See ENGINES
Compression rings installed Replace compression
upside down rings correctly, See
ENGINES
Worn or scored cylinder Rebore cylinders or
walls replace block
Mismatched oil ring Replace oil ring
expander and rail expander and rail, See
ENGINES
Intake gasket dowels too Replace intake gasket
long dowels
Excessive main or connecting Replace main or
rod bearing clearance connecting rod
bearings, See ENGINES
\
\
\
\
\
\
\
No Oil Pressure Low oil level Add oil to proper level
Oil pressure sender or Replace sender or gauge
gauge broken
Oil pump malfunction Remove and overhaul oil
pump, See ENGINES
Oil pressure relief valve Remove and reinstall
sticking valve
Oil pump passages blocked Overhaul oil pump, See
ENGINES
Oil pickup screen or tube remove restriction
blocked
Loose oil inlet tube Tighten oil inlet tube
Loose camshaft bearings Replace camshaft
bearings, See ENGINES
Internal leakage at oil Replace block or
passages cylinder head
\
\
\
\
\
\
\
Low Oil Pressure Low engine oil level Add oil to proper level
Engine oil too thin Remove and replace with
thicker oil
Excessive oil pump Reduce oil pump
clearance clearance, See ENGINES
Oil pickup tube or screen Remove restrictions
blocked
Main, rod or cam bearing Replace bearing to
clearance excessive reduce clearance, See
Page 1263 of 1378
Excessive Noise Loose pump-to-drive Tighten screws
assembly screws
Loose tube on pump assembly Tighten tube
Valves not functioning Replace valves
properly
\
\
\
\
\
\
\
Oil Leakage Loose end plug Tighten end plug
Bad seal crimp Remove and re-crimp
seal
\
\
\
\
\
\
\
MANUAL TRANSMISSION
MANUAL TRANSMISSION 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.
MANUAL TRANSMISSION/TRANSAXLE TROUBLE SHOOTING
\
\
\
\
\
\
\
Condition Possible Cause \
\
\
\
\
\
\
Noisy In Forward Gears .Low gear oil level,
.Loose bell housing bolts,
.Worn bearings or gears
\
\
\
\
\
\
\
Clunk On Deceleration
(FWD Only) .Loose engine mounts,
.Worn inboard CV joints,
.Worn differential pinion shaft,
.Side gear hub counterbore
in case worn oversize
\
\
\
\
\
\
\
Gear Clash When Shifting
Forward Gears .Clutch Out Of Adjustment,
.Shift linkage damaged or
out of adjustment,
.Gears or synchronizers damaged,
.Low gear oil level
\
\
\
\
\
\
\
Transmission Noisy When
Moving (RWD Only) Quiet In
Neutral With Clutch Engaged .Worn rear outputshaft bearing
\
\
\
\
\
\
\
Gear Rattle .Worn bearings,
.Wrong gear oil,
.Low gear oil,
.Worn gears
\
\
\
\
\
\
\
Steady Ticking At Idle
(Increases With RPM) .Broken tooth on gear
\
\
\
\
\
\
\
Gear Clash When Shifting
Forward Gears .Worn or broken synchronizers
\
\
\
\
\
\
\
Loud Whine In Reverse .Normal condition ( 1) \
\
\
\
\
\
\
Page 1276 of 1378
Reaction ring sticking See POWER STEERING GEAR
in housing head article
Steering pump internal See POWER STEERING PUMP
leakage article
Steering gear-to-column See STEERING COLUMN
misalignment article
Lack of lubrication in Service front suspension
linkage
Lack of lubrication in Service front suspension
ball joints
\
\
\
\
\
\
\
Increased Effort High internal pump leakage See POWER STEERING PUMP
When Turning article
Wheel Fast Power steering pump belt Adjust or replace if
Foaming, Milky slipping necessary
Power Steering
Fluid, Low Fluid Low fluid level Check and fill to
Level or Low proper level
Pressure
Engine idle speed to low Adjust to correct
setting
Air in pump fluid system See POWER STEERING PUMP
article
Pump output low See POWER STEERING PUMP
article
Steering gear See POWER STEERING GEAR
malfunctioning article
\
\
\
\
\
\
\
Wheel Surges Low fluid level Check and fill to proper
or Jerks level
Loose fan belt Adjust or replace if
necessary
Insufficient pump See POWER STEERING PUMP
pressure article
Sticky flow control valve See POWER STEERING PUMP
article
Linkage hitting oil pan Replace bent components
at full turn
\
\
\
\
\
\
\
Kick Back or Air in pump fluid system See POWER STEERING PUMP
Free Play article
Worn poppet valve in See POWER STEERING PUMP
steering gear article
Excessive over center See POWER STEERING GEAR
lash article
Thrust bearing out of See POWER STEERING GEAR
adjustment article