ECU MITSUBISHI 3000GT 1991 Repair Manual

FRONT AXLE - Drive Shaft26-13
llE53C
HI/JbCotter pm
/‘Washer
llR0015(3) To remove the drive shaft
(R.H.) from the transaxle, pry
off the shaft using a lever against the protrusion of the
drive shaft.
Caution
Pulling the drive shaft can cause damage to the T.J.Be sure to use a lever.
INSPECTIONM26QCAGl Check the drive shaft boot for damage or deterioration.
l Check the ball joints for wear or operating condition.
l Check the spline part for wear or damage.
SERVICE POINT OF INSTALLATIONM26QLlAR2. INSTALLATION OF DRIVE SHAFT NUT
(1) 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.
TSB Revision

FRONT AXLE - Drive Shaft26-17
INSPECTIONM26QGDD
l Check the drive shaft for damage, bending or corrosion.
l Check the inner shaft for damage, bending or corrosion.
l Check the drive shaft splines for wear or damage.
l Check the inner shaft splines for wear or damage.
lCheck for entry of water and/or foreign material into B.J.
l Check the spider assembly for roller rotation, wear or
corrosion.
lCheck the groove inside T.J. case for wear of corrosion.
l Check the boots for deterioration, damage or cracking.
l Check the center bearing for seizure, discoloration or
roughness of rolling surface.
l Check the dust cover for damage or deterioration.
SERVICE POINTS OF REASSEMBLYM26QHDF
20. INSTALLATION OF B.J. BOOT
/ 17. T.J. BOOT
(1) Wrap vinyl tape around the splines on the drive shaft,
and then install the R.J. boots and T.J. boots, in that
order.
11 K03:
(2)Fill the inside of the B.J. and B.J. boot with the specified
grease.
Specified grease: Repair kit grease
145 g (5.11 oz.)
135 g (4.76 oz.)
Caution
1.The grease in the repair kit should be divided in
half for use, respectively, at the joint and insidethe boot.
2. Special grease is used to lubricate the joint. Do
not mix old and new grease or different types of
grease.(3) Secure the boot bands.
FWDAWD
B.J.bootband
T.J.
bootbandLarge20-22#BJ104
20-75#BJl OOL
Small20-I 5#BJ10420-72#BJlOO
Large20-131#BJlOO20-I 31 #BJlOO
Small20-72#BJlOO20-72#BJlOO
Caution1. The boot bands should be tightened with the
drive shaft at a 0” joint angle.
2. The B.J. boot band and T.J. boot band are
identified by the identification number stamped
on the lever. Take good care to install the correct
one.
TSB Revision

26-20
FRONT AXLE - Drive Shaft
2. 1. INSTALLATION OF T.J. BOOT BANDS
Set the T.J. boot bands at the specified distance in order to
adjust the amount of air inside the T.J. boot, and then
tighten the T.J. boot band securely.
‘dStandard value: 85 + 3 mm (3.35
k .12 in.)llN0034
1 TSB Revision1

27-16
REAR AXLE - Axle Shaft
MB990241-01
MB990,938-01AY ho"sing
MB990$28-0111 A003865. REMOVAL OF SELF-LOCKING NUT
With the special tool, secure the axle shaft and remove the
companion flange self-locking nut.8. REMOVAL OF AXLE SHAFT ASSEMBLY
With the special tool, remove the axle shaft from the axle
housing.
9.REMOVAL OF REAR ROTOR Remove the rear rotor from the axle shaft.
10. REMOVAL OF OUTER BEARING / 1.1. DUST SHIELDRemove the outer bearing and dust shield concurrently
from the axle shaft.
14. REMOVAL OF OIL SEAL
/ 15. INNER BEARING
With the special tool, remove the inner bearing and oil sealfrom the axle housing.
INSPECTIONhl27HcAGl Check the companion flange for wear or damage.
l Check the dust shield for deformation or damage.
l Check the wheel bearings for burning or discoloration.
l Check the wheel bearing for unsmooth rotation.
l Check the axle shaft for cracking, wear or damage.
l Check oil seal for cracking or damage.
TSB Revision

27-18REAR AXLE - Axle Shaft / Drive Shaft
57-9. INSTALLATION OF REAR ROTOR
Press fit the rear rotor to the axle shaft with the rear rotorgroove surface toward the axle shaft flange.
5. INSTALLATION OF SELF-LOCKING NUT
With the special tool, secure the axle shaft and tighten thecompanion flange self-locking nut.
DRIVE SHAFT
REMOVAL AND INSTALLATIONM27JA-
-55-65 Nm
Removal steps4I)
l 4 2. Driveshaft3.
Circlipl *4. Oil sealllNO020
SERVICE POINT OF REMOVAL2. REMOVAL OF DRIVE SHAFT
Using a tire lever, etc. remove the
differential carrier.TSB Revision
drive shaftfrom the
M27JBAE

REAR AXLE - Drive Shaft27-23
llK008
1Lever
r,.
:I‘)B.J. boot band: 20 - 74 #BJ95
( T.J. boot band: 20 - 75 #BJ95llKl'=-llE560
HP0124
(3) Fill the inside of the B.J. and B.J. boot with the specified
grease.
Specified grease: Repair kit grease125 g (4.4102.)
Caution
The grease in the repair kit should be divided in halffor use, respectively, at the joint and inside the
boot.A special type of grease is used on the joint. Be
cautious to ensure that not other grease is allowedto come in contact with the joint.
(4) Secure the boot bands.
Caution1. The boot bands should be tightened with the
drive shaft at a 0” joint angle.
2. The B.J. boot band and T.J. boot band are
identified by the identification number stampedon the lever. Install correct ones at correct
positions.5. INSTALLATION OF SPIDER ASSEMBLY
(1) Apply the specified grease furnished in the repair kit to
the spider assembly.Specified grease: Repair kit grease
(2) Install the spider assembly with the chamfered spline
end first.2. 1. INSTALLATION OF T.J. BOOT BANDS
Set the T.J. boot bands at the specified distance in order toadjust the amount of air inside the T.J. boot, and then
tighten the T.J. boot band securely.
Standard value: 85 + 3 mm (3.35 +
.I2 in.)
TSB Revision

27-26
REAR AXLE - Differential Carrier
SERVICE POINTS OF INSTALLATION
7. INSTALLATION OF DIFFERENTIAL CARRIERm27lDAL
Install the rear wheel oil pump by inserting it through the
mounting hole and install the differential carrier securely.\yiIlYl61
Caution
Use care not to damage the rear wheel oil pump gears.
3. CONNECTION OF PROPELLER SHAFTAlign the mating marks on the flange yoke and the
companion flange to install the propeller shaft.
INSPECTION BEFORE DISASSEMBLYM27lEAJHold the working base in a vice, and attach the differential
carrier to the working base.
FINAL DRIVE GEAR BACKLASH
With the drive pinion locked in place, measure the final drivegear backlash with a dial indicator on the drive gear.
NOTEMeasure at four points or more on the circumference of the
drive gear.d’Standard value: 0.11
- 0.16 mm (.004 - .006 in.)IDRIVE GEAR
RUNOUTI
Measure the drive gear runout at the shoulder on the reverseside of the drive gear.
Limit: 0.05 mm
(.002 in.)
FINAL DRIVE GEAR TOOTH CONTACT
Check the final drive gear tooth contact by following the steps
below.
(1) Apply a thin, uniform coat of machine blue to both surfaces ’of the drive gear teeth.
TSB Revision

REAR AXLE - LSD Case Assembly27-39
LSD CASE ASSEMBLY
/DISASSEMBLY AND REASSEMBLYM27NE- -
L
Disassemblysteps1. Screw
l +2. Differential case A+I) I)+3. Thrust washer (L.H.)1 lFOO33
4. Viscous unit‘M 5. Pinion mate washer*a 6. Differential pinion mate7. Differential pinion shaft
8. Differential side gear (R.H.)l *9. Thrust washer (R.H.)l 10. Differential case B
Feeler gauge
INSPECTION BEFORE DISASSEMBLYM27NFAA
1. CHECKING THE DIFFERENTIAL GEAR BACKLASH
(1) Secure the differential case assembly in a vise so thatthe differential side gear (right) is facing upward.
CautionWhen securing the vise, be sure not to hold the
differential case assembly too tightly.
(2) Insert a 0.03 mm LOO12 in.) feeler gauge at two places
(diagonally) between differential case
I3 and the thrust
washer (right).
CautionDo not insert a feeler gauge in the oil groove of
differential case
B.
7--u/Differential side Thrust washer
gear (right)(right)llFO037

iREAR AXLE
- LSD Case Assembly27-41
viscous unit
bSpline part
(5) Check the spline part of the viscous unit for stepped wear
or damage, and check the contact surface with differentialcase
B.(6) Check the side gear (left) of the viscous unit for unusual
wear or damage.
Pinion mate
llPO134
Feeler qauqe
/11 FO03Feeler
Differential g;ar (right)Th‘rust kasher (righl
11 FOO3i
SERVICE POINTS OF REASSEMBLYM27NlhA
10. INSTALLATION OF THE DIFFERENTIAL CASE B
/ 2.
DIFFERENTIAL CASE A
Align the mating marks of differential cases B and A, and
assemble the cases.
6.INSTALLATION OF THE DIFFERENTIAL PINION MATE /5. PINION MATE WASHER
With the washer in the position shown in the illustration,
install to the differential pinion shaft, and then install to
differential case B.3. SELECTION OF THE THRUST WASHER (LEFT)
If the differential side gear and pinion mate gear have beenreplaced, select the thrust washer (left) by following the
steps below.
(1) Wash the differential side gear and pinion mate gear inunleaded gasoline to remove all oil, grease, etc.
(2) Install the previously used thrust washers (being carefulthe left and right ones are used at the correct side),
together with the gears, viscous unit, pinion mate
washer and pinion shaft, to differential cases A and B,and then, using screws, secure them temporarily.
(3) Secure the differential case assembly in a vise so thatthe differential side gear (right) is facing upward.
Caution
When securing in the vise, be sure not to hold thedifferential case assembly too tightly.
(4) Insert a 0.03 mm j.0012 in.) feeler gauge at two places
(diagonally) between differential case B and the thrust
washer (right).
CautionDo not insert a feeler gauge in the oil groove of
differential case B.
TSB
Revision

FRONT SUSPENSION - Stabilizer Bar33A-11CHECKING STABILIZER LINK BALL JOINT STARTING
TORQUE
12LO24412LO217
Tapeeke
12PO156
Clip ring ends
(Could be on 180”
opposite side)1280252
Align end of bushinwith marking outerMount two nuts on the ball joint, and then measure the ball
joint starting torque.
Standard value: 1.7
- 3.2 Nm (15 - 28 in.lbs.)
BALL JOINT DUST SHIELD REPLACEMENTM33TEAF(1) Remove the clip ring and the dust shield.
(2) Apply multipurpose grease to the lip and inside of the dust
shield.
(3) Use vinyl tape to tape the stabilizer link where shown in the
illustration, and then install the dust shield to the stabilizer
link.(4) Secure the dust shield by the clip link.
At this time, make sure that the clip ring ends are located ata point 90”
? 20” with reference to the link axis.
SERVICE POINT OF INSTALLATIONM33TOAO
5. POSITIONING OF STABILIZER BAR BRACKET
(1) Align the bushing (LH) with the stabilizer bar markingend and temporarily tighten the stabilizer bar bracket
U-0.
(2) In this condition, mount the stabilizer bar bracket (RH)and temporarily tighten it.
(3) Temporarily fix the both ends of the stabilizer bar to the
link and tighten the stabilizer bar bracket mounting bolts
to specification:
1 TSB Revision