MITSUBISHI 3000GT 1991 Service Manual

REAR SUSPENSION <AWD> - Rear Suspension Assembly34-2512AOlOE
Dust shield12A022i
Press outMB991 387
MB991 38812N008E
Press-fitMB991 387
MB99089012N008f
SERVICE POINTS OF REMOVALM34GBAU17. REMOVAL OF CROSSMEMBER BRACKET
/ 18. CROSS-
MEMBER MOUNTING NUT (ON DIFFERENTIAL SIDE)
/19. REAR SUSPENSION ASSEMBLY
(1) Before removing the crossmember bracket, support the
differential case with the transmission jack.
(2) Remove the crossmember mounting bolt and nut.
NOTELowering the rear suspension assembly down from the
transmission jack requires three persons, as the rear
suspension assembly is very heavy. (Assign one person
to the differential and one each to the left and right
lower arm.)
(3) Apply a wood block to the ball joint of the lower arm to
prevent the dust shield from being deformed.
INSPECTIONM34GCAN2l Check the crossmember for cracks or deformation.
l Check the bushings for cracks or deterioration.
CROSSMEMBER SUPPORT BUSHING (FRONT)
REPLACEMENTM34GTAG
(1) Using the special tool, remove and press-fit the crossmem-
ber support bushing.
(2) When press-fitting the bushing, make sure that the hollow
portions are positioned as shown.
NOTEEnsure that the shift in rotating direction is within
+ 5”.
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34-26
REAR SUSPENSION <AWD> - Rear Suspension, Assembly
I12FOO7C
I Press outMB990958-01
I--
I12N008
M B990958-01
112F007E12FOO791
(3) Make sure that the protrusion of the inner sleeve (dimen-
sion A and
B) are up to specifications.
Standard value
Dimension A: 15.5 mm
(.59 in.)
Dimension B: 2.1
- 3.7 mm (.08 - .15 in.)dCROSSMEMBER BUSHING (REAR) REPLACE-
MENTM34GTAH(1) Using the special tool, remove and press-fit the bushing.
(2) When press-fitting, position the bushing as shown.
NOTEEnsure that the shift in rotating direction is within t- 5”.
(3) Make sure that the protrusion of the inner sleeve (dimen-
sion A) is up to specification.
Standard value: 6.7
- 7.3 mm (.26 - .29 in.)
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REAR SUSPENSION <AWD> - Upper and Lower Arm34-27
4slDust
cover12R0487
UPPER AND LOWER ARM
L
REMOVAL AND INSTALLATION
Post-installation Operation/ l $e;k pd ri;;k0ignrnent 1A
140- 160 NmIOI- 116ft.lbs.Upper arm removal steps
*I)1. Self-locking nut
2. Upper arm mounting nut
3. Upper arm
mounting.bolt4. Upper arm
Lower arm removal steps
5. Lower arm mounting nut
6. Lower arm mounting bolt
/
L;:Stabilizer link tolowerarm
Self-locking nut9.Lower arm
NOTE
140- 160 Nm*/3IOI- 116ftlbs.* gFor tightening points marked with *, first temporarily tighten
and then ground the vehicle to torque to specification where the
vehicle is empty.
SERVICE POINTS OF REMOVALM34SBAC1. REMOVAL OF SELF-LOCKING NUT
Using the special tool, disconnect the upper arm ball joint
from the knuckle.
NOTE(1) Do not remove the nut from the ball joint, but just
loosen it.
(2) Suspend the special tool with a rope to prevent it from
dropping.
c8. REMOVAL OF SELF-LOCKING NUT
Lower down the lower arm on the crossmember side.
Then, install the special tool and disconnect the lower arm
ball joint from the knuckle.
NOTE
(1) Do not remove the nut from the ball joint, but just
loosen it.
(2) Suspend the special tool with a rope to prevent it from
dropping.M34SA-B
‘80
12A0091TSB Revision

34-28
REAR SUSPENSION <AWD> - Upper and Lower Arm
INSPECTIONM34SCACl Check the bushing for wear and deterioration.
lCheck the upper arm or lower arm for bend or breakage.
l Check the ball joint dust cover for cracks.
l Check all bolts for condition and straightness.12uoo1IB990800-01
Dust cover
Snap ring
17R019’
3CHECKING OF BALL JOINT FOR STARTING TORQUE
Mount two nuts on the ball joint, and then measure the ball
joint starting torque.
Standard value: 2
- 9 Nm (17 - 78 in.lbs.)
MB991 07312NOlOl
RemovalMB991 072
Press-fitMB991 072
MB991 07312NOlOC
1-
BALL JOINT DUST COVER REPLACEMENTM34SEAS2(1) Remove the dust cover.
(2) Apply multipurpose grease to the lip and inside of the dust
cover.
(3) Drive in the dust cover with special tool until it is fully
seated.
Ij
LOWER ARM BUSHING REPLACEMENTM34SFAC
(1) Use the special tool to remove and press-fit the bushing.
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Revwon

iREAR SUSPENSION
<AWD> - Upper and Lower Arm34-29
3
Pipe.(lower
arm)tluter pipe
(bushing)12A003512AOlOC(2) Press-fit the lower arm bushing until the bushing outer pipe
edge flush with the lower arm pipe edge.
SERVICE POINT OF INSTALLATIONM34SDAB7. INSTALLATION OF STABILIZER LINK TO LOWER ARM
COUPLING NUT
Holding the stabilizer link with a wrench, tighten the
self-locking nut so that the protrusion of
thG stabilizer link
(dimension A indicated in illustration) is within the standard
value.
Standard value: 5
- 7 mm (.197 - .276 in.)
I
c
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34-30REAR SUSPENSION <AWD> - Trailing Arm
TRAILING ARMM34TA-B1
REMOVAL AND INSTALLATIONN/A
$icJ
14 ft.lbs.T/C vehicles26-30Nm
50-60Nm936 - 43 ftlbs.\19 - 22 ft.lbs.
55-65Nm40 - 47ft.lbs.
200
- 240 Nm*145- 174ft.lbs.* I
P100 Nm
72 ft.lbs.
58 Nm’ <842 ft.lbs.Removal steps
*I)
*I)
+*+*
1. Rear brake caliper assembly
2. Rear brake disc
3. Drive shaft to companion flange mounting
bolt and nut
4. Self-locking nut
5. Companion flange
6. Rear axle shaft
7. Parking brake cable end
8. Parking brake cable clamp bolt
9. Rear speed sensor
(ABS)IO. Rear speed sensor cable and parking brake
cable bands (ABS)II. Dust shield
12. Self-locking nut (upper arm)
13. Self-locking nut (lower arm)
14. Tie rod end mounting
nut15. Trailing arm mounting bolt and nut
16. Rear shock absorber mounting bolt
17. Trailing arm
NOTEFor tightening points marked with *, first temporarily tighten
and then ground the vehicle to torque to specification where the
vehicle is empty.‘7
il 6’
12FOO89
Post-installation Operationl Check of Wheel Alignment
(Refer to P.34-23)l Check of Parking Brake Lever Stroke(Refer to GROUP 36 - Service Adiustment
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REAR SUSPENSION <AWD> - Trailing Arm34-31
IIMB990241-01MB990211-01
12AO612
Pressure fittingRemoval
12A030!Trading arm bushing12A029
SERVICE POINTS OF REMOVALM34TBAC4. REMOVAL OF SELF-LOCKING NUT
With the special tool, secure the rear axle shaft, then
remove the self-locking nut.
6. REMOVAL OF REAR AXLE SHAFT
With the special tool, remove the rear axle shaft
12. REMOVAL OF SELF-LOCKING NUT (UPPER ARM)
/ 13.
SELF-LOCKING NUT (LOWER ARM)
Using the special tool, disconnect the ball joint from the
knuckle.
NOTE(1) Do not remove the nut from the ball joint, but just
loosen it.
(2) Suspend the special tool with a rope to prevent it from
dropping.
INSPECTIONM34TCAB2l Check trailing arm for cracks and deformation.
l Check bushing for cracks, deterioration and wear.
TRAILING ARM BUSHING REPLACEMENTM34TEAE2Use the special tool to remove and press-fit the bushing.
CONNECTING ROD REPLACEMENTM34TFABReplace the connecting rod using the following procedure:
(1) Remove the trailing arm bushing.
(2) Remove the bolt and nut.
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34-32REAR SUSPENSION <AWD> - Trailing Arm
Bolt B
12A0'291BOUY
Guide shaft
\,center lme
-MB991 254
,,+.s
Y v\ L VA02971(3) Set the special tool onto the trailing arm as shown in the
illustration.
FP’dpply lubricant to the sliding portion of the special tool
(at the arrow marked “A” in the illustration).‘d(2) Install bolt B to the trailing arm, at the point shown in
the figure.
(4) Use a spanner, etc., to turn the portion marked “C” in the
illustration to remove the connecting rod.
(5) installation of the body (special tool) should be performed
with the screw shaft and guide shaft center lines oriented
as shown in the illustration.
(6)
Apdply soapy water to the rubber portion of the connecting
(7) Reverse the removal procedures to press-fit.
(8) Remove the special tool after aligning the holes in the
special tool and trailing arm.
(9) Tighten the bolts and nuts to the specified torque.
Tightening torque
: 98 Nm (71 ftlbs.)(IO)Press-fit the trailing arm bushing. (Refer to
P.34-31.)
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L
REAR SUSPENSION <AWD> - Shock Absorber Assembly34-33
SHOCK ABSORBER ASSEMBLY
REMOVAL AND INSTALLATION1 v i5 KS
23
,
Pre-removal and Post-installation Operation
l Removal and Installation of the Rear Side Trim
Absorber Lid
(Refer to GROUP 52A-Trims.)
Removal steps1. Shock absorber upper mounting nut
2. ECS connector
(ECS)3. Cap
4. Shock absorber lower mounting bolt
5. Shock absorber assembly
M34NA-612FOO86
M34GM-BDISASSEMBLY AND REASSEMBLY
20-25 Nm14- 18ft.lbs.
Disassembly steps1. Cap
2. Piston rod tightening nut
(Refer to
P.34-14.)3.hasher4. Upper bushing (A)
5. Bracket assembly (Refer to
P.34-14.)6.Spring pad
7. Upper bushing (B)8.Collar9.Cup assembly10.Dust cover11.Bump rubber
12. Coil spring (Refer to P.34-14.)13.Shock absorber
12A0360
INSPECTIONM34GOAC2l Check the rubber parts for damage.
lCheck the coil springs for crack, damage or deterioration.
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34-34REAR SUSPENSION <AWD> - Stabilizer Bar
STABILIZER BAR
REMOVAL AND INSTALLATION
100 Nm72 ft.lbs.
42 Nm4
30 ft.lbs._
/IIO-130Nm80 - 94 ftlbs.
70-85 Nm51- 61 ftlbs.
Removal steps
l *1. Self-locking nut*l a2. Self-locking nut*
3. Joint cup A*
4. Stabilizer rubber*
5. Joint cup
B”I)* 6. Stabilizer link*
7. Joint cup A*
8. Stabilizer rubber*
9. Tie rod end mounting nut*
IO. Parking brake cable bracket mounting bolt”11. 4WS prping fixing bolt <4WS>12. Rear shock absorber mounting bolt
13. Power cylinder mounting bolt
<4WS>14. Crossmember bracket*
15. Crossmember mounting nut*
16. Stabilizer bracket*
17. Bushing*
18. Stabilizer bar
NOTEParts marked with * are symmetrical12L0217
Nm.Ibs.
M341A.B12A0113
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