1991 MITSUBISHI 3000GT ABS

13-134FUEL SYSTEM - On-vehicle InsDection of MPI ComDonents
INSPECTIONUsing Multi-use Tester
FunctionItem No. Data displayCheck condition. Driving conditionStandard valueData reading 45
Stepper
Engine warmed up
Apply fairly sharp
To reach tempo-motor stepbraking at 50 km/h
rarily 70 to
(4th speed) to100 stepsstop vehicle
NOTESelect a place where a rear-end collision is unlikely.
HARNESS INSPECTION
side connector
Engine control umtharness side connecm
6FU1543
Check for an open-circuit or a short-circuit to ground, between the ABScontrol unit and the engine controlunit.l
ABS control unit connector: Dis-connectedlEngine control unit connector:
Disconnected7Repair the
harness.
(@m-ml)
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TSB Revision1

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.
TSB Revision

27-4
REAR AXLE - Rear Axle Hub
REAR AXLE HUB
REMOVAL AND INSTALLATION
M27MA- -
50-60Nm36 - 43 ftlbs.
200-260Nm145-188ftibs.Removal steps
4*4*1. Rear speed sensor 2. Calioer assemblv3.Brakedisc4. Hubcap
l *5. Wheel bearing nut4’6. Tongued washer7. Rear hub assembly4*8. Rear rotor 9. Rear hub unit bearing
Caution
Rear hub unit bearing cannot be disassembled.
llN0018
Pole p&e14NOlO-7
SERVICE POINTS OF REMOVALM27MBAC
1.REMOVAL OF REAR SPEED SENSOR
Caution
Be careful when handling the pole piece at the tip of thespeed sensor and the toothed edge of the rotor so as
not to damage them by striking against other parts.
2. REMOVAL OF CALIPER ASSEMBLY
Remove the caliper assembly and suspend it with a piece of
wire.
8. REMOVAL OF REAR ROTOR
CautionCare must be taken not to scratch or scar the rotor’s
toothed surface, and not to drop it.
If the rotor’s toothed surface is chipped or the rotor is
deformed, it might not be able to accurately sense the
wheel rotation speed and the system as a result mightnot perform normally.
14NOO99ITSB Revision

33A-2FRONT SUSPENSION - Specifications
SPECIFICATIONSM33CA-A
GENERAL SPECIFICATIONS
Items
Coil spring identification colorM/T: Orange x 1
ATT: Orange x 2
Shock absorber
Type
Maximum length
Compressed length
Damping force
[at 0.3 m/set. (0.984 ft./set.)]
Hydraulic, cylindricaldouble acting type
485 + 3 (19.09
f .12)335
I 3 (13.19 + .12)Hydraulic, cylindrical double acting type
485
k 3 (19.09 + .12)335 2 3 (13.19 +
.12)
150 (5.91)
NOTE*: OptionHard
: 2,650 + 360 (584 + 79)
Medium : 1,650 t 230 (363 ?I 51)
Soft : 650 f 100 (143 + 22)
Hard
: 1,200 + 170 (265 * 37)
Medium : 1 ,I 50 k 170 (253 +37)Soft :1,000 z!z 150 (220 + 33
SERVICE SPECIFICATIONSM33CB-A
Camber
Caster
Toe-inmm (in.)
Lower arm ball joint starting torque
Nm (in.lbs.)IO-22 (86-191)
Stabilizer link ball joint starting torqueNm (in.lbs.)1.7 - 3.2 (15 - 28)
Steering angle
Inner wheelTSB Revision

FRONT SUSPENSION - Special Tools / Troubleshooting
SPECIAL TOOLS
L
L
Removalof the lower arm ball joint and
Wheel alignment
gauge attachment
Measurement of the wheel alignment
Spring compressorCompression of the front coil spring
MB990799-01Ball joint remover
and installerInstallation of the dust shield
TROUBLESHOOTINGM33EBAA
SymptomProbable causeRemedy
Steering wheel is heavy,Suspension malfunctionvibrates or pulls toBall joint
Adjust orreplace
one sideCoil springWheel alignment
Unbalanced or worn tiresAdjust or replace
Excessive vehicleBroken or deteriorated stabilizer
rollingShock absorber malfunctionReplace
Poor ridingImproper tire inflation pressureAdjust
Broken or deteriorated coil spring
Shock absorber malfunctionReplace
Inclination of vehicleBroken or deteriorated coil springReplace
NoiseLack of lubricationLubricate
Looseness and wear of each partRetighten or replace
Broken coil spring
Shock absorber malfunction
ReplaceTSB Revision
I

FRONT SUSPENSION - Strut Assembly33A-5
STRUT ASSEMBLY
IREMOVAL AND INSTALLATION
‘=Il Adjustment of Wheel Alignment
M33lA- *
6
45 Nm
2
33 ft.lbs.4!
AI$
c3liI7 // ;I jI ’II ;/ ~I: /I /j j
1
-r11Ii /’ I--‘-
Removal steps
1. Brake hose tube clamo mountina bolt
2. Brake hose tube clam;-,3. Fr;;tSs;eed sensor clamp mountmg nut
4. Front speed sensor clamp
tABS>5. Strut lower mounting bolt
6. Strut upper mounting bolt
7. ECS connector

8. Cap
9. Strut assembly
1 TSB Revision

FRONT SUSPENSION - Strut Assembly33A-7
INSPECTIONM33LGAFl Check the strut insulator bearing- for wear or rust.
l Check the rubber parts for damage or deterioration.
lCheck the spring for deformation, deterioration or damage.l Check the shock absorber for deformation,
Strutmsulatkx bearing
12FOO80
SERVICE POINTS OF REASSEMBLYM33UlAM
4. INSTALLATION OF SPRING UPPER SEAT ASSEMBLY
(1) Assemble the spring upper seat to the piston rod, fitting
the notch in the rod to the shaped hole in spring seat.(2) Line up the holes in the strut assembly spring lower
seat with the hole in the spring upper seat.
NOTEThe job is easily accomplished with a pipe
[$I 8 mm x
300 mm
(4 .3 in. x 11.8 in.)].
2. INSTALLATION OF SELF-LOCKING NUT
(1) With the coil spring held compressed by the special
tools (MB991 237 and MB991 238). provisionally .tightenthe self-locking nut.
(2) Correctly align both ends of the coil spring with the
grooves in the spring seat, and then loosen the special
tools (MB991 237 and MB991 238).
(3) Using the special tool, tighten the strut insulator at the
specified torque.12FOO20
iTSB Revision

33B-2ELECTRONIC CONTROL SUSPENSION (ECS) - Specifications
SPECIFICATIONS
GENERAL SPECIFICATIONS
FRONT SUSPENSION
M33CA-B
Coil spring
Effective No. of coils
14.8x170x322.515.0 x 170x331.015.7x170x301.5(.58 x 6.69 x 12.70)(.59 x 6.69 x 13.03)(.62 x 6.69 x 11.87)
Shock absorber
TypeHydraulic, cylindrical double-acting type
485 (19.1)
335 (13.2)
150 (5.9)
Expansion
Hard
Medium
Soft
Contraction
Hard
2,650 (584)
1,650 (364)
.650 (143)
1,200 (265)Pillow ball type
REAR SUSPENSION
ItemsIFWDIAWDI
Suspension systemMulti-link typeDouble-wishbone type
Coil spring
Wire dia. x center dia. x
free lengthmm (in.)
Effective No. of coils(color coded)
12.2x105x350.0(48 x 4.13 x 13.78)
5.5 (orange x 1)12.2x105x379.3(48 x 4.13 x 14.93)
6.8 (blue x 2)
1 TSB Revision