MITSUBISHI 3000GT 1991 Service Manual

REAR SUSPENSION - Service Adjustment Procedures34-5
0 camber
“\
er
ewer arm (L.H.)A-L!?., ’ cLr”“l‘412F002E
SERVICE ADJUSTMENT PROCEDURES
REAR WHEEL ALIGNMENT INSPECTIONM34FAAH
CAMBERStandard value: 0” + 30
To adjust camber, turn the lower arm mounting bolt
(cross-
member side).
NOTE(1) Make the adjustment with the assist link mounting bolt
(crossmember side) loosened.
(2) The difference between the right and left wheels should be30’ or less.
(3) Left wheel: Clockwise
(0 camber)
Right wheel: Clockwise
(0 camber)
One graduation changes camber by about 15’.
TOE-INStandard value: 0.5
-+ 2.5 mm (.Ol + .09 in.)
To adjust toe, turn the assist link mounting bolts (on crossmem-ber side) on both sides
t,he same amount.
NOTE
(1) The difference between right and left wheels should be 3mm (.I2 in.) or less.
(2) Left wheel: Clockwise (toe-in)
Right wheel: Clockwise (toe-out)
One graduation changes toe by about 4.8 mm
(.19 in.)
.
Caution1. Adjust the eccentric bolt within 90” from the central
position.
2.Adjust camber and toe, in that order, and, if camber isadjusted, be sure to adjust toe also.
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34-6REAR SUSPENSION - Service Adiustment Procedures12NOOOl
WHEEL BEARING END PLAY INSPECTIONM34FBAG
1.Inspect the play of the bearings while the vehicle is jackedup and resting on floor jack.
2. Remove the hub cap and then release the parking brake.
s&i3. Remove the caliper assembly and the brake disc.
4. Check the bearing’s end play.
Place a dial gauge against the hub surface; then move the
hub in the axial direction and check whether or not there is
end play.Limit: 0.05 mm
(.002 in.) or less
NOTEIf the limit value is exceeded, the lock nut should be
tightened to the specified torque and check the end play
again.5. Replace the rear hub bearing unit if an adjustment cannot
be made to within the limit.
REAR HUB ROTARY-SLIDING RESISTANCE (TOR-
QUE) INSPECTION
M34FCAC
1.Inspect the play of the bearings while the vehicle is jackedup and resting on floor jack.
2. Release the parking brake.
3. Remove the caliper assembly and the brake disc.
..J
4.After turning the hub a few times to seat the bearing, attach
a spring balance to the hub bolt, and, pulling at a 90” anglefrom the hub bolt, measure to determine whether or not
the rotary-sliding resistance of the rear hub (the
rotary-sliding torque of the rear hub) is the standard value.
Limit:
Rear hub rotary-sliding resistance
31 N (7 Ibs.) or lessRear hub rotary-sliding torque
1.8 Nm (1.30 ftlbs.) or less
NOTEIf the limit value is exceeded, the lock nut should be
tightened to the specified torque and check the end play
again.5. Replace the rear hub unit bearing if an adjustment cannot
be made to within the limit.
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REAR SUSPENSION - Rear Suspension Assembly34-7
REAR SUSPENSION ASSEMBLYM34GA-A
L/
REMOVAL AND INSTALLATION
140- 160 Nm*IOI- 116ftlbs.
Removal steps
1. Shock absorber mounting nuts (upper)2. ECS connector (ECS)3. Cap4. Brake line clamp bolt5. Brake caliper mounting bolt6. Brake caliper assembly7. Brake disc
8. Parkina brake cable clamo bolt
(Refer to GROUP 15 - Exhaust Pipe and
l * l +9. ParkinG brake cable end ”(Refer to GROUP 36 - Parking Brake.)10. Rear speed sensor clamp bolt (ABS)11. ABS speed sensor (ABS)12. Trailing arm mounting bolt and nut*I)13. Crossmember mounting nut*I)14. Rear suspension assembly
NOTE*.indicates parts which should be temporarily tightened, and
then fully tightened with the vehicle in the unladencondition.
Post-installation Operationl Installation of the Main Muffler(Refer to GROUP 15 - Exhaust Pipe andMain Muffler.)l Check of Wheel Alignment(Refer.to P.34-5.)l Check of Parking Brake Lever Stroke(Refer to GROUP 36 -Service AdjustmentProcedures.)l Installation of the Absorber Lid to Rear Side Trim(Refer to GROUP 52A-Trims.)A12FOllO
SERVICE POINTS OF REMOVALM34GBAT
13. REMOVAL OF CROSSMEMBER MOUNTING NUT / 14.
REAR SUSPENSION ASSEMBLYSupport the crossmember with a transmission jack, then
remove the crossmember mounting nut and rear suspen-
sion assembly.
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34-8REAR SUSPENSION - Rear Suspension Assembly
INSPECTIONM34GcANll Check the crossmember for cracks or deformation.
l Check the bushings for cracks or deterioration.
;d
Press outPress fit12N009fCROSSMEMBER BUSHING REPLACEMENT M34GTAF
(1) Using the special tool, remove and press-fit the bushing.
(2) When press-fitting the bushing, apply soapsuds to it and
position the arrows as shown.
(3) Make sure that the protrusion (dimension A) of the inner
sleeve is up to specification.
Standard value: 8.5
- 9.5 mm (.33 - .37 in.)
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REAR SUSPENSION -Upper Arm, Lower Arm and Assist Link34-9UPPER ARM, LOWER ARM AND ASSIST LINK
iREMOVAL AND INSTALLATION
LPre-removal Operation
l Removal of the Shock Absorber
(Refer to P.34-13.)Post-installation Operation
l Check of Wheel Alignment
(Refer to P.34-5.)l Installation of the Shock Absorber
(Refer to P.34-13.)Upper arm removal steps
1. Brake line clamp bolta*2. Self-locking nut
140- 160 Nm*IOl-116ft.lbs.”\
\
2
/7
75-89Nm54 - 64 ft.lbs.
140 - 160 Nm*101 - 116ft.lbs.*
8
3. Upper arm mounting bolt and nut
4. Upper armLower arm removal steps
5. Lower arm mounting bolt and nutl *6. Self-locking nut
7. Lower armAssist link removal steps
8. Assist link mounting bolt and nut4*9. Self-locking nut10. Assist link
NOTE*:indicates parts which should be temporarily tightened, and
then fully tightened with the vehicle in the unladen
condition.
M34SA-S
Dustcover
rz412R0487
12A009$3TSB Revision
SERVICE POINTS OF REMOVALMSBAB2. 6. 9. REMOVAL OF SELF-LOCKING NUT
Using the special tool, disconnect the knuckle from the
upper arm, lower arm, and assist link.
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.

REAR SUSPENSION -Upper Arm, Lower Arm and Assist Link
INSPECTIONM34SCABl Check the bushing for wear and deterioration.
l Check the upper, lower arm or assist link for bend or
breakage.l Check the ball joint dust cover for cracks.
l Check all bolts for condition and straightness.d12ROl
Removaling12NOlOl
CHECKING OF BALL JOINT FOR STARTING TORQUEMount two nuts on the ball
.joint, and then measure the ball
joint starting torque.
Standard value: 2
- 9 Nm (17 - 78 in.lbs.)
BALL JOINT DUST COVER REPLACEMENTM34SEABl
(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.‘dLOWER ARM, UPPER ARM, ASSIST LINK
BUSHING REPLACEMENTM34SFABUse the special tool to remove and press-fit the bushing.
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REAR SUSPENSION - Trailing Arm34-11
TRAILING ARMM34TA-A
t’REMOVAL AND INSTALLATION
,’
i;
18
90Nm* A65ft.lbs.* 15Post-installation Operation
lCheck of Wheel Alignment
‘Refer to P.34-5.)>heck of Parking Brake Lever Stroke(Refer tn GROIJP 36 - Service Adiustment
r/A -50-60Nm36 - 43ftlbs.
(Refer to GROUP 35 -Service Adjustment
-160Nm* -- 116ft.lbs.*Removal steps
1. Brake caliper mounting bolt
2. Brake caliper
3. Brake line clamp bolt
4. Rear brake disc5. Hubcap
6. Wheel bearing nut
7. Hub assembly
8. Parking brake cable clamp bolt*I) I)*9. Parking brake cable end (Refer to GROUP 36- Parking Brake.)IO. Rear speed sensor clamp bolt (ABS)
11. ABS speed sensor (ABS)
36 - 43 ftlbs.12FOlll
12. Backing plateI)+ 13. Stabilizer link mounting nutl I)14. Self-locking nut
15. Shock absorber mounting bolt (upper)
l *16. Self-locking nutl *17. Self-locking nut
18. Trailing arm mounting bolt and nut
19. Trailing arm assembly
NOTE*:indicates parts which should be temporarily tightened, and
then fully tightened with the vehicle in the unladen
condition.
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34-12REAR SUSPENSION - Trailina Arm
I12A009E
Pressure fittingRemoval
MB991 38912N009t
_ Hold with
wrenchA12AOlOC
SERVICE POINTS OF REMOVALM34TBAB14.16. 17. REMOVAL OF SELF-LOCKING NUT
Using the special tool, remove the knuckle from the lower,arm, upper arm, and assist link.
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.
INSPECTIONM34TCABl
l Check trailing arm for cracks and deformation.
l Check bushing for cracks, deterioration and wear.
TRAILING ARM BUSHING REPLACEMENTM34TEABl
Use the special tool to remove and press-fit the bushing.
SERVICE POINT OF INSTALLATIONM34lDAA
13. INSTALLATION OF STABILIZER LINK MOUNTING NUTHolding the stabilizer link with a wrench, tighten the
self-locking nut so that the protrusion of the stabilizer link
(dimension A indicated in illustration) is within the standard
,,
value.dStandard value: 5
- 7 mm
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(.197 -.276 in.)I

REAR SUSPENSION - Shock Absorber Assembly
SHOCK ABSORBER ASSEMBLYM34NA-A
iREMOVAL AND INSTALLATION
L
i
Pre-removal and Post-installation Operationl Removal and Installation of the Rear Side TrimRemoval steps
1. Shock absorber upper mounting nut
2. ECS connector (ECS)3. Cap
4. Brake line clamp bolt
5. Shock absorber lower mounting bolt
6. Shock absorber
NOTE*:indicates parts which should be temporarily tightened, and
then fully tightened with the vehicle in the unladen
condition.
45 Nm33 ft.lbs.12FOO87
DISASSEMBLY AND REASSEMBLYM34GMA
20-25 Nm
Disassembly steps
l * l a1, Piston rod tiahtenina nut2. Washer d u3. Upper bushing (A)** 4. Bracket assembly5. Upper spring pad6. Upper bushing (B)7.Collar
8.Cup assembly9.Dust cover10.Bump rubber+* 11. Coil spring12.Shock absorber
3
4
7
5
6
8
10
1280325:
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34-14REAR SUSPENSION - Shock Absorber Assemblv
12K(u9
‘7
Coil
,’I
seat12A0049
SERVICE POINT OF DISASSEMBLYM34GNAB1. REMOVAL OF PISTON ROD TIGHTENING NUT
(1) Before removing the piston rod tightening nut, corn-
press the coil spring using the special tool.
d(2) While holding the piston rod, remove the piston rod
tightening nut.
INSPECTIONM34GOACl
l Check the rubber parts for damage.
lCheck the coil springs for crack, damage or deterioration.
SERVICE POINTS OF REASSEMBLYM34GPAC
11. INSTALLATION OF COIL SPRING(1) Use the special tool
(MB990987-01) to compress the
coil spring and insert it in the shock absorber.
(2) Align the edge of the coil spring to the position of the
shock absorber spring seat as shown.
4. INSTALLATION OF BRACKET ASSEMBLY / 1. PISTONROD TIGHTENING NUT
(1) With the position of the bracket assembly as shown inthe figure, tighten the tightening nut to the specified
torque.
(2) Install the coil spring so that the lower edge fits into thespring seat groove and the upper edge fits into the
spring pad groove, then remove the special tool
’
(MB990987-01).L/iTSB Revision