oil MITSUBISHI 3000GT 1991 Service Manual

PROPELLER SHAFT - Propeller Shaft25-5
lOW504lOW505l Check the universal joints for smooth operation in all
directions.
l Check the center bearing for smooth movement.
lCheck the center bearing mounting rubber for damage or
deterioration.
Matlng marks10AOOl
j2
SERVICE POINTS OF INSTALLATION
3. INSTALLATION OF PROPELLER SHAFT
(I) Caution
M25GOAP
Be cautious to avoid damage to the oil seal lip of the
transfer.(2) Install the propeller shaft to the companion flange with
the mating marks properly aligned.
CautionTighten installation bolts after removing oil and
grease from threads to prevent them from loosen-ing due to lubrication.
2. INSTALLATION OF INSULATOR
Install spacers and insulators as indicated in the illustration.
Caution
When installing the center bearing, assemble the samespacers as removed from it (or new spacers of equal
thickness).
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SPECIAL TOOLS
FRONT AXLE - Special Tools26-3M26DA-A
MB990998-01
Front hub remover
and installerRemoval or press-in the front hub
Measurement of front hub unit bearing
rotation starting torque
of the hub
M B990955-01Oil seal installer
MB990890-01
M B990883-01Rear suspension
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26-4FRONT AXLE - Special Tools
ToolNumberName
MB991 248 or
MD998801
Inner shaft remover
MB990925-01
Bearing and oil sealinstaller set
MB990938-0 1Handle
7Use
Removal of the inner shaft
Removal of wheel bearing
M 8990932-01M B990938-01
Removal and installation of center bearingMB990930-01MB990932-01M 8990938-01
MB990925-01Tool numberInstaller disc O.D. mm (in.:
I
MB990926-01MB990927-01MB990928-01M B990929-01MB990930-01MB990931-01MB990932-01MB990933-01MB990934-01MB990935-01MB990936-01MB990937-0139.0
(1.54)45.0(1.77)49.5(1.95)
51 .o(2.01)54.0(2.13)57.0(2.24)
61 .O(2.40)63.5(2.50)67.5(2.66)71.5(2.81)75.5(2.97)79.0(3.11)
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26-8FRONT AXLE - Hub and KnuckleI
INSPECTIONM26lCAEl Check the hub for cracks and spline for wear.
l Check the oil seal for damage.
l Check the knuckle for cracks.
l Check for defective bearing.
L)
NOTE
If the meshing of the wheel bearing outer race and the
knuckle, or of the wheel bearing inner race and the hub, is
loose, replace the bearing or damaged parts.
llFO041:ter
pinMEASUREMENT OF FRONT HUB UNIT BEARING ROTA-
TION STARTING TORQUE(1) Set the special tool to the front hub unit bearing.
(2) Holding the special tool (bolt), tighten its nut to 200 to 260
Nm (145 to 188 ft.lbs.).
(3) Turn the hub to cause grease to distribute evenly over the
bearing.(4) Measure the rotation starting torque of the hub.
Limit: 1.8 Nm (16
in.lbs.) or less
SERVICE POINT OF INSTALLATIONM261OAG
3.INSTALLATION OF DRIVE SHAFT NUT / 2. COTTER PIN
(I) Be sure to install the washer and wheel bearing nut in
the specified direction.
(2) After installing the wheel, lower the vehicle to the
ground and finally tighten the wheel bearing nut.
(3) If the position of the cotter pin holes does not match,
tighten the nut up to 260 Nm (188
ft.lbs.1 in maximum.
(4) Install the cotter pin in the first matching holes and bend
it securely.
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FRONT AXLE - Hub and Knuckle26-9
DISASSEMBLY AND REASSEMBLY
n
Disassembly stepsI)+
1. Oil seal (drive shaft side)*I)2. Hub and rotorl 4Adjustment of wheel bearing starting torque
3. Hub4. Rotor
5. Dust shieldl *6. Oil seal (hub side)
7. Snap ring
*I) l *8. Wheel bearing
9. Knuckle
/9Nm7 ftlbs.
L
MSIE- .
bi\/b ilR0036
SERVICE POINTS OF DISASSEMBLYM26lFAP2. REMOVAL OF HUB AND ROTOR
(1) Attach the special tools to the knuckle and front hub.
(2) Secure the knuckle in a vise.
(3) Tighten the nut of the special tool and remove the hub
and rotor from the knuckle.
Caution1. Be sure to use the special tools.
2. If the hub and knuckle are disassembled by
striking them with a hammer, the bearing will
be damaged.8. REMOVAL OF WHEEL BEARING
(1) Crush the oil seal in two places to that the tabs of the
special tool will be caught on the wheel bearing inner
race.(2) Remove the wheel bearing inner race from the hub by
using the special tool.
CautionBe careful that the hub will not fall down as the
wheel bearing inner race (outer side) is removed
from the hub.
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26-10
FRONT AXLE - Hub and KnuckleMB990938-01MB990932-01
/
llR00401 MB991355llL0124
12A0545MB990998-01MB990998-01(3) Remove the snap ring from the knuckle.
(4) Remove the bearing by using the special tools.
NOTERemoval is easier if the outer side inner race removedLJfrom the hub is placed on the bearing and the wheel
bearing is then removed.
INSPECTIONM261GAC
lCheck the hub and brake disc mounting surfaces for galling
and contamination.
l Check the knuckle inner surface for galling and cracks.
l Check for defective bearing.
SERVICE POINTS OF REASSEMBLYMZBIHAO8. INSTALLATION OF WHEEL BEARING
(1) Fill the wheel bearing with multipurpose grease.
(2) Apply a thin coating of multipurpose grease to the
knuckle and bearing contact surfaces.
(3) With the wheel bearing inner race removed, press-in
the bearing by using the special tools.
(4) Install the wheel bearing inner race to the wheel
bearing.
6. INSTALLATION OF OIL SEAL (HUB SIDE)
(1) Drive the oil seal (hub side) into the knuckle by using the
special tools until it is flush with the knuckle end
surface.
(2) Apply multipurpose grease to the lip of the oil seal and
_to the surfaces ot the 011 seal which contact the hub.d. ADJUSTMENT OF WHEEL BEARING STARTING
TORQUE
(I) Use the special tool to mount the hub assembly onto
the knuckle.
(2) Tighten the nut of the special tool to 200
- 260 Nm .(I45
- 188 ft.lbs.).
(3) Rotate the hub assembly in order to seat the bearing.llKO12
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(4) Measure the wheel bearing starting torque (hub starting
torque) by using the special tools.
Limit: 1.8 Nm (16
in.lbs.) or less
NOTEThe starting torque must be within the limit and, in
addition, the bearing must not feel rough when rotated.

FRONT AXLE - Hub and Knuckle / Drive Shaft26-11
MB99
MB990890-01
llR0034
DRIVE SHAFT
REMOVAL AND INSTALLATIONRemoval steps(5) Measure to determine whether the end play of the hub
is within the specified limit or not.
Limit: 0.05 mm
(.002 in.)
(6) If the starting torque and hub end play are not within the
limit range while the nut is tightened to 200
- 260 Nm
(145
- 188 ft.lbs.), the bearing, hub and/or knuckle have
probably not been installed correctly. Repeat the dis-
assembly and assembly procedure.
1. INSTALLATION OF OIL SEAL (DRIVE SHAFT SIDE)
Drive the oil seal (drive shaft side) into the knuckle until it
contacts the snap ring.
Apply multipurpose grease to the lip of the oil seal.M26aA-
-
Pre-removal and Post-installation
60-72NmOperation60-72 Nm
/43-52ft.lbs.l Removal and lnstallatlon of43 - 52 ftlbs.the Under Covernl/ /40.
-I200 - 260 Nm
145 - 188 ftlbs.
1.Cotterpin+* l a2. Drive shaft nut4*3. Lower arm ball joint connection4.Cotterpin4*5. Tie rod end connection
6. Center bearing bracket installation bolt
4*7. Drive shaft and inner shaft assembly (L.H.14*8. Drive shaft (R.H.)
9.Circlip
11 NO026
Caution
In the case of AWD-vehicles with A.B.S., take care not to
damage the rotor for A.B.S. installed to the B.J. outer race.
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26-18
FRONT AXLE - Drive Shaft
llE56011 LOO64MB990938-01MB990932-01
11L0010
Dust seal innerMB990890-01
llLOO9'3-
16. INSTALLATION OF SPIDER ASSEMBLY
(1) Pack specified grease amply between the spider shaft
and rollers of the spider assembly.
Specified grease: Repair kit grease
Id
Caution
Special grease is used to lubricate the joint. Do not
mix old and new grease or different types of grease.(2) To install the spider assembly to the shaft, insert the
shaft from the chamfered end of the spider.
11. INSTALLATION OF CENTER BEARING(1) Apply multipurpose grease to the center bearing and
inside the center bearing bracket.
(2) Use the special tools to press-fit the center bearing into
the center bearing bracket.
10.9. INSTALLATION OF DUST SEALS
(1) Apply multipurpose grease to the rear surfaces of all
dust seals.
Dust seal inner: 14
- 20 g (.49 - .71 oz.)
Dust seal outer: 8
- 12 g (.28 - .42 oz.)
(2) Press the oil seal into the center bearing bracket using
the special tool.
CautionTake care not to damage the rubber part on the
periphery of the dust seal.
(3) Apply multipurpose grease to the lip of each dust seal.
NOTEWhen applying grease, make sure that it does not
adhere to anything outside the lip.
Id 1
1I
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27-1
REAR AXLE
CONTENTSM27AA- -~
REAR AXLE . . . . . . . . . . . . . . . . . . . . . .._._..
AXLE SHAFT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
DIFFERENTIAL CARRIER. . . . . . . . . . . . . . . . . . . . . . . .._..........24
DRIVE SHAFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
LSD CASE ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._.......39
SERVICE ADJUSTMENT PROCEDURES
. . . . . . . .13
Gear OilLevelCheck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Limited-Slip Differential Check
. . . . . . . . . . .._...........14Rear Axle Total Backlash Check
. . . . . . . . . . . . . . . . . . . .13Rear Wheel Bearing End Play Check
_........... 13
Rear Wheel Bearing Rotation Torque
Check. . . . . . . . . . . . . . . . .._.............................................14
SPECIAL TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
SPECIFICATIONS................................................6General Specifications
....................................6Lubricants
............................................................7Sealants and Adhesives
....................................7Service Specifications
....................................7
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Axle Shaft
Grease leakage
Noise while wheels are rotatingDifferential (Limited Slip Differential)
Abnormal noise during driving or
gear changing
Abnormal noise when cornering
Break down
Gear noise
Gear oil leakage
SeizureThe limited slip differential does
not function
Drive Shaft
Noise
REAR AXLE . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR AXLEHUB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE ADJUSTMENT PROCEDURES........Rear Hub Rotary-sliding Resistance
(Torque)Inspection............................................Wheel Bearing End Play Inspection
................
SPECIFICATIONS................................................General Specifications
....................................Service Specifications
....................................
TROUBLESHOOTING. . . . . . . . . . .._....._.....................Abnormal Sound
24
3
3
32
2
2
2

REAR AXLE - Specifications
SERVICE SPECIFICATIONS27-7M27CEB
L
ItemsSpecifications
Standard value
Rear wheel bearing rotation torqueN
(Ibs.) [Nm (in.lbs.)l12 (2.6) lo.7 (6)] or less
Setting of T.J. boot length
mm (in.)
85 +_ 3 (3.35 f .12)
Final drive gear backlash
mm (in.)0.11 -0.16(.004-.006)
Differential gear backlash (Limited slip differential)
mm (in.)0.03 - 0.09 (.0012 -.0035)
Drive pinion rotation torque
Nm
(in.lbs.)
With oil seal
New part (with rust-prevention oil)0.5 - 0.7 (4 - 6)
New part/reusable part (gear oil application)
0.35
- 0.45 (3 - 4)
Without oil seal
New part (with rust-prevention oil)
0.3-0.5(3-4)
New part/reusable part (gear oil application)0.15 - 0.25 (1 - 2)
Limit
Rear axle total backlashmm (in.)5 (2)
Drive gear runout
mm (in.)0.05 (.002)
Rear wheel bearing end playmm (in.)0.8 (031)
LUBRICANTSM27CD.~Items
Specified lubricantsQuantity
i
Rear axle gear oilHypoid Gear Oil API classification GL-5 or higher1 .I lit. (1.2 qts.)
Above -23°C (-10°F) SAESO, 85W-90,8OW-90From -34°C (-30°F) to -23°C (-10°F) SAE 8OW, 8OW-90
Below -34°C (-30°F) SAE 75W
B.J. boot grease
T.J. boot greaseRepair kit grease125 g (4.41 oz.)
135 g (4.76 oz.)
SEALANTS AND ADHESIVESM27CE-.
I7.Specrfred sealants and adhesives
Drive gear threaded hole
Vent plug
Differential cover3M Stud Locking Part No. 4170 or equivalent
3M ATD Part No. 8663 or equivalentTSB Revision