1990 MITSUBISHI SPYDER differential

REAR AXLE Special Tools
Preload socket
General service toolPrevention of entry of foreign
objects into the differential
General service tool
Working base adapter
,
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REAR AXLE Tools
seal installer set
lDifferentialside oil..
press-fitting
(Use
Side bearing puller
race removal
Oil seal installer
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REAR AXLE Troubleshooting
TROUBLESHOOTING
AXLE SHAFT
SymptomProbable causeRemedy
Noise while wheels are Brake drag
rotatingReplace
Bent axle shaft
Worn or scarred axle shaft bearing
Grease leakage Worn or damaged oil seal
Malfunction of bearing seal
Symptom
Noise Probable cause
Wear, play or seizure of ball joint Remedy
Replace
Excessive drive shaft spline looseness
DIFFERENTIAL (LIMITED SLIP DIFFERENTIAL)
SymptomProbable cause
Remedy
Abnormal noise during
driving or gear chang-Excessive drive gear backlash
Adjust
ing”’Insufficient drive pinion preload
II II
Abnormal noise
when cornering Excessive differential gear backlash
Worn spline of a side gear
Loose companion flange self-locking nut
Damaged differential gears
Damaged pinion shaft Adjust or replace
Replace
Retighten or replace
Replace
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Gear
Insufficient gear oil quantity
Improper drive gear tooth contact adjustmentReplenish
Adjust or replace
Incorrect drive gear backlash Adjust
I II
IImproper drive pinion preload adjustment
NOTE
l l:In addition to a malfunction of the differential carrier components, abnormal noise can also be caused by the
universal joint of the propeller shaft, the axle sh afts, the wheel bearings, etc. Before disassembling any parts,
take all possibilities into consideration and confi rm the source of the noise.
l 2: Noise from the engine, muffler vibration, transa xle, propeller shaft, wheel bearings, tires, body, etc., is easily
mistaken as being caused by malfunctions in the dif ferential carrier components. Be extremely careful and attentive
when performing the driving test, etc.
Test methods to confirm the source of the abnormal noise include: coasting, acceleration, constant speed
raising the rear wheels on a jack, etc. Use the met hod most appropriate to the circumstances.
driving,

R E A R
Symptom
Gear noise**
Gear oil leakage
The limited slip
differential does not
function (on snow, mud, ice, etc.)
NOTE
Noise from the engine, muffler vibration, transaxl e, propeller shaft, wheel bearings, tires, body, etc., is easily
mistaken as being caused by malfunctions in the dif ferential carrier components. Be extremely careful and attentive
when performing the driving test, etc.
Test methods to confirm the source of the abnormal include: coasting, speed
raising the rear wheels on a -jack, etc. Use the me thod most appropriate to the
In the event of seizure, disassemble and replace the parts involved, and also be sure to check for any irregularities and repair or replace as
l 4:In addition to disassembling and replacing the failed parts, be sure to check all components forirregularities
and repair or replace as necessary.
Probable cause Remedy
Damaged, broken, and/or seized
ofReplace
the drive gear and drive pinion
‘Damaged, broken, and/or seized drive pinion bear- ings
Damaged, broken, and/or seized side bearings
Damaged differential case
Inferior gear oil
Insufficient gear oil quantity
R e p l e n i s h
Worn or damaged front oil seal, OFan improperly Replace,
installed oil seal
Damaged gasket
Loose companion flange self-locking nut
Loose filler or drain plug Retighten or apply
‘Clean or replaceClogged or damaged vent plug
Insufficient drive
backlash
Excessive drive pinion preload
Excessive side bearing preload
Insufficient differential gear backlash
Excessive clutch plate preload
Inferior gear
oil
Insufficient gear oil quantity
Incorrect drive gear backlash
Insufficient drive pinion preload
Insufficient side bearing preload
Excessive differential gear backlash
drive gear clamping bolts
The limited slip device is damaged Adjust
Replace
Replenish
Adjust
Retighten
Disassemble, check the functioning
and replace the damaged parts
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6REAR AXLE Service
REAR AXLE TOTAL BACKLASH
If the vehicle produces a booming sound due
to an of driving system, measure the rear
total backlash by the following procedures to see if the
carrier assembly requires removal.
1. Place the gearshift lever in theneutral position, apply
the parking brake and
up the vehicle.
Mating marks2.Manually turn the propeller. shaft as far as it
will go and make mating marks flange
dust cover and the differential carrier. ,
3.Manually turn the propeller shaft counterclockwise as far
as it will go and measure the of the mating!
marks.
Limit: 5 mm in.)
4.If the backlash exceeds’ the limit, remove the differential
carrier assembly (Refer to and adjust the back-
lash (Refer to
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GEAR OIL LEVEL
Remove the filler plug, check, the level. .
2.The oil is sufficient if hole.
Specified gear oil: ,
API classification
NOTEO v e r S A E
Under SAE

REAR AXLE On-vehicle Service
WHEEL BEARING END PLAY CHECK
1. Jack up the vehicle and remove the rear wheel.
2. Release the parking brake.
3.Remove the caliper assembly and the brake disc or b rake
drum.
4. Set a dial gauge as shown in the illustration, and then
move the hub in the axial direction and measure the play.
Limit value: 0.05 mm in.)
5.If the play exceeds the limit value, the rear
assembly.
LIMITED SLIP DIFFERENTIAL CONDITION
CHECK (VCU TYPE)27300100019
1. Place the shift lever in the neutral position an d block
the front wheels with chocks.
2. Release the parking brake lever fully.
3. Jack up the rear wheels and apply rigid racks to the
specified positions of the side sills.
4. Disconnect the propeller shaft from the differen tial.
5.While turning one wheel slowly and make sure that
opposite wheel turns in the same direction.
6. If the opposite wheel turns in reverse, disassem ble the
limited slip differential with VCU and replace the VCU.
DIFFERENTIAL CARRIER OIL SEAL
REPLACEMENT27200120022
1. Remove the drive shaft. (Refer to
2. Remove the oil seal of the differential carrier.
3.Use the special tool to tap on a new oil seal as fa r as
the end of the differential carrier.
4. Apply multipurpose grease to the lip section of the oil
seal and to the oil seal contact surface of the drive shaft.
5. Replace the on the drive shaft with a new one,
and then install the drive shaft onto the differential carrier.
6.Check the wheel alignment. (Refer to GROUP 34 On-ve-
hicle Service.)
HUB BOLT REPLACEMENT
Refer to
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REAR AXLE Drive
2 7 1 0 0 3 3 0 0 2 3
REMOVAL AND INSTALLATION
Brake Line Bleeding with drum brakes>
(Refer to GROUP 36
On-vehicle Service.)
9871
I I10
,19
44118-1373385-99
11
with drum brakes>
11
9871. .,
Removal steps
1. Rear wheel speed sensor 2. Caliper assembly (Refer to 3. Brake disc
4. Brake drum
5. Shoe and lining assembly (Refer to
GROUP 36
Parking Brake.)6. Shoe and lever assembly
7. Clip8. Parking brake cable
9. Brake pipe connection
10. Shock absorber connection Trailing arm connection12. Lower arm connection
13. Toe control armball joint andknuckle connection(Refer to 14. pin 15. Drive shaft nut16. Washer
17. Differential mount support
18. Drive shaft
19.
Caution1.For vehicles with ABS, careful not to damagedrive shaft rotor.2.l : Indicates parts should be temporarily and then fully tightened the on the
ground in the unladen condition.
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REAR AXLE Shaft
REMOVAL SERVICE POINTS
,
DRIVE SHAFT REMOVAL
(1) Push the lower part of the knuckle
the of the
vehicle, and then separate the differen-
tial carrier. At fhis time, use a tire or similar to
separate the drive shaft connection.
.
(2) Use the special tool as a not to let
get into the differential carrier. ,
,
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