wheel MITSUBISHI 3000GT 1991 Service Manual

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
dir J
bag module, clock spring, interconnecting wiring. Other SRS-related comp\
onents (that may have to be
(*).
The Supplemental Restraint System (SRSI-related components are shown in the following MASTER TABLE
OF CONTENTS. Be sure to carefully read and understand the WARNING below \
before proceeding.
Group number
22.23
32
36
42
52A
Group nameSRS-related components
FUELCRUISE CONTROL SYSTEM/ P.13-185
MANUALTRANSAXLE.TRANSAXLE CONTROLAUTOMATIC TRANSAXLE
POWER PLANT MOUNTRIGHT MEMBER, LEFT MEMBER AND CROSSMEMBERP.32-6
ELECTRONIC CONTROLSUSPENSION’STEERING ANGULAR VELOCITY SENSORP.33B-19
PARKING BRAKESPARKING BRAKE LEVER AND PARKiNG BRAKE CABLE/ P.36~5I
STEERING/POWER STEERING GEAR BOX/ P.37A-17
/STEERING WHEEL AND SHAFTj P.37A-13
BODY
INTERIOR
FENDER
FLOOR CONSOLE/ P.52A-11
FRONT SEAT
INSTRUMENT PANEL
P52A-18
P.52A-8
CHASSIS ELECTRICAL
SEAT BELT
COLUMN SWITCH
HORN SWITCH
IGNITION SWITCH
P.52A-25
P.54-73
P.54-78
1 P.54-6
RADIO REMOTE-CONTROL/ P.54.110
HEATER, AIR CONDITIONERAIR-CONDITIONER CONTROL PANELAND VENTILATIONAIR-CONDITIONER CONTROL UNITP.55-56
/DAMPER CONTROL MOTOR ASSEMBLYI
/HEATER CONTROL ASSEMBLY1 P.55-18I
HEATER UNIT.1 P.55-22
WARNING!
VENTILATORS (INSTRUMENT PANEL)P.55-36
(1) Improper service or maintenance of any component of the SRS, or an\
y SRSrelated component,
can lead to personal injury or death to service personnel (from inadver\
tent firing of the air bag) or
to the driver (from rendering the SRS inoperative).
(260°F) in baking or in
drying after painting, remove the SRS components (air bag module, SRS d\
iagnosis unit, front
perfarmed
only at an authorized MITSUBISHI dealer.
52B
- Supplemental Restraint System (SRS), before beginning any service or m\
aintenance of any
component of the SRS or any SRS-related component.
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GENERAL - How to Use This Manual00-3HOW TO USE THIS MANUAL
MOOBAAF
c;SCOPE OF MAINTENANCE, REPAIR AND
DEFINITION OF TERMS
SERVICING EXPLANATIONSSTANDARD VALUE
bThis manual provides explanations, etc. concerning
procedures for the inspection, maintenance, repair
and servicing of the subject model. Unless other-
wise specified, each service procedure covers all
models. Procedures covering specific models are
identified by the model codes, or similar designation
(engine type, transaxle type, etc.). A description of
these designations is covered in this unit under
“VEHICLE IDENTIFICATION”.
SERVICE ADJUSTMENT PROCEDURES“Service Adjustment Procedures” are procedures
for performing inspections and adjustments of
particularly important locations with regard to the
construction and for maintenance and servicing, but
other inspections (for looseness, play, cracking,
damage, etc.) must also be performed.
SERVICE PROCEDURESThe service steps are arranged in numerical order
and attentions to be paid in performing vehicle
service are described in detail in SERVICE POINTS.
TROUBLESHOOTING
Troubleshootings are classified into master trouble-
shooting and group troubleshooting and located as
follows:
The master troubleshooting is prepared when the
trouble symptom relates to two or more groups and
given in MASTER TROUBLESHOOTING.
The group troubleshooting guide is prepared for
causes of problems related to that individual groupIndicates the value used as the standard for judging
the quality of a part or assembly on inspection or the
value to which the part or assembly is corrected and
adjusted. It is given by tolerance.
LIMITShows the standard for judging the quality of a part
or assembly on inspection and means the maximum
or minimum value within which the part or assembly
must be kept functionally or in strength. It is a value
established outside the range of standard value.
REFERENCE VALUEIndicates the adjustment value prior to starting the
work (presented in order to facilitate assembly and
adjustment procedures, and so they can be com-
pleted in a shorter time).
CAUTIONIndicates the presentation of information particularly
vital to the worker during the performance of
maintenance’ and servicing procedures in order to
avoid the possibility of injury to the worker; or
damage to component
.parts, or a reduction of
component or vehicle function or performance, etc.
INDICATION OF TIGHTENING TORQUEThe tightening torque shown in this manual is a
basic value with a tolerance of
+lO% except the
following cases when the upper and lower limits of
tightening torque are given.
(1) The tolerance for the basic value is within
+ I no/-
only; a troubleshooting guide is prepared for eachI iv,“.appropriate group.(2) Special bolts or the like are in use.
(3) Special tighteningmethods are used.
MODEL INDICATIONS
The following abbreviations are used in this manual for classification of model types.M/T:Indicates the manual transaxle, or models equipped with the manual transaxle.
A/T:Indicates the automatic transaxle, or models equipped with the automatic transaxle.
MPI: Indicates the multi-point injection, or engines equipped with the multi-point injection.
Turbo: Indicates an engine with turbocharger, or a model equipped with such an engine.
Non-Turbo: Indicates an engine without turbocharger, or a model equipped with such an engine.
FWD: Indicates the front wheel drive vehicles.
AWD; Indicates the all wheel drive vehicles.
ABS:Indicates the anti-lock braking system or models equipped with the anti-lock braking system.
ECS: Indicates the electronic control suspension or models equipped with the electronic control
suspension.
4WS:Indicates the 4-wheel steering system or models .equipped with the 4-wheel steering system.
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GENERAL - Precautions before Service0045
c
mm (in.)so005
PRECAUTIONS BEFORE SERWCEMOOOAAOSERVICING ELECTRICAL SYSTEM
1. Note the following before proceeding with work on the
electrical system.
Note that the following must never be done:
Unauthorized modifications of any electrical device or
wiring, because such modifications might lead to a vehicle
malfunction, over-capacity or short-circuit that could result
in a fire in the vehicle.
2. When servicing the electrical system, disconnect the
negative cable terminal from the battery.
Caution1. Before connecting or disconnecting the negative
cable, be sure to turn off the ignition switch and the
lighting switch.(If this is not done, there is the possibility of
semiconductor parts being damaged.)
2. After completion of the work steps [when the
battery’s negative (-) terminal is connected], warm
up the engine and allow it to idle for approximately
five minutes under the conditions described below,in order to stabilize the engine control conditions,
and then check to be sure that the idling is
satisfactory.
Engine coolant temperature: 80 - 95°C (176 - 203°F)
Lights, electric fans, accessories: OFF
Transaxle: neutral position(A/T models: “N” or “P”)
Steering wheel: neutral (center) position
VEHICLE WASHING
If high-pressure car-washing equipment or steam car-washing
equipment is used to wash the vehicle, be sure to maintain the
spray nozzle at a distance of at least 300 mm (12 in.) from any
plastic parts and all opening parts (doors, luggage compart-
ment, etc.).
c
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00-16GENERAL - Towina and Hoistina
Sling type
Wheel lift type
Flat bed type
Sling type
Wheel lift type
Flat bed typeTOWING AND HOISTING
MOOGAACWRECKER TOWING RECOMMENDATION

FRONT TOWING PICKUP
Caution
\‘i
d
This vehicle cannot be towed by a wrecker using sling-typeequipment to prevent the bumper from deformation.
If this vehicle is towed, use wheel lift or flat bed equip-
ment.The vehicle may be towed on its rear wheels for extended
distances provided the parking brake is released. It is recom-
mended that vehicles be towed using the front pickup
whenever possible.
REAR TOWING PICKUP
Caution
This vehicle cannot be towed by a wrecker using sling-typeequipment to prevent the bumper from deformation.
If this vehicle is towed, use wheel lift or flat bed equip-
\
ment.‘L*3Manual transaxle vehicles may be towed on the front wheels,
provided the transaxle is in neutral and the drive-line has not
been damaged. The steering wheel must be clamped in the
straight-ahead position with a steering wheel clamping device
designed for towing service use.
CautionDo not use steering column lock to secure front wheel
position for towing.
Automatic transaxle vehicle may be towed on the front wheels
at speeds not to exceed 50 km/h (30 mph) for a distances not to
exceed 30 km (18 miles).
CautionIf these limits cannot be met, the front wheels must be
placed on a tow dolly.
TOWING WHEN KEYS ARE NOT AVAILABLE
When a locked vehicle must be towed and keys are not
available, the vehicle may be lifted and towed from the front,
provided the parking brake is released. If not released, the rear
wheels should be placed on a tow dolly.
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GENERAL - Towing and Hoisting
Sling type
Nheel lift type
3at bed type
SAFETY PRECAUTIONSThe following precautions should be taken when towing the
vehicle.
1.DO NOT LIFT OR TOW THE VEHICLE BY ATTACHING TO
OR WRAPPING AROUND THE BUMPER.
2. Any loose or protruding parts of damaged vehicle such as
hoods, doors, fenders, trim, etc., should be secured prior to
moving the vehicle.
3.Operator should refrain from going under a vehicle while it
is lifted by the towing equipment, unless the vehicle is
adequately supported by safety stands.
4. Never allow passengers to ride in a towed vehicle.
5. State and local rules and regulations must be followed
when towing a vehicle.

Caution1. If only the front wheels or only the rear wheels are
lifted for towing, the bumper will be damaged.
In addition, lifting of the rear wheels causes the oil to
flow forward, and may result in heat damage to the
rear bushing of the transfer, and so should never be
done.
2.The vehicle must not be towed by placing only its frontwheels or only the rear wheels on a rolling dolly,
because to do so will result in deterioration of the
viscous coupling and result in the viscous coupling
causing the vehicle to jump forward suddenly.
3. If this vehicle is towed, use flat bed equipment.
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00-18
GENERAL - Towing and Hoisting
Frame contact support location:
1,070 mm (42.0 in.): 1,130 mm (44.0 in.) OOFOO3'
Front OOFO046HOISTING
POST TYPESpecial care should be taken when raising the vehicle on a
\frame contact type hoist. The hoist must be equipped with theL)proper adapters in order to support the vehicle at the proper
locations.
Caution
When service procedures require removing rear suspen-sion, fuel tank, spare tire and liftgate, place additional
weight on rear end of vehicle or anchor vehicle to hoist toprevent tipping of center of gravity changes.
FLOOR JACKThe usual type of floor jack is used at the following locations.
Front: Under the mid point of No. 1 crossmember
NOTEOn vehicles with active-aero system, the front jacking point
can be accessed by removing the center cover panel from
the under cover. Be sure to reinstall the center cover panel
after jack-up operation.
Rear:
Under the jack up bracket of crossmember
Under the rear differential
Caution1. When lifting the No. 1 crossmember, do not allow jack
lifting plate to contact under cover.
2. In order to prevent scarring the crossmember, place a
piece of cloth on the jack’s contact surface (to prevent‘corrosion caused by damage to the coating).
d3. A floor jack must never be used on any part of the
underbody.
4.Do not attempt to raise one entire side of the vehicle by
placing a jack midway between front and rear wheels.This practice may result in permanent damage to the
body.
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GENERAL - Towing and Hoisting
LIFTING, JACKING SUPPORT LOCATION00-19


OOFOO20OOFO019
@ Floor lack locations$Approximate center of gravrty
@Frame contact hoist. twin post‘hoist or scissors lack (emergency) locatlons
EMERGENCY JACKINGJack receptacles are located at the body sills to accept the
scissors jack supplied with the vehicle for emergency road
service. Always block opposite wheels and jack on level
surface.
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00-20GENERAL - Special Handling Instructions for AWD Models
14A019fOOPOO38
BalancingmachineOOA0046
Pick-up stand
OOA0024
I
FRONT WHEEL MEASUREMENTS1. Place the front wheels on the brake tester.
2. Perform the brake test.
CautionThe rear wheels should remain on the ground.
3.If the brake dragging force exceeds the specified value, jack
up the vehicle and manually rotate each wheel to check the
rotation condition of each wheel.
NOTEIf the brake dragging force exceeds the specified value, the
cause may be the effect of the viscous coupling’s dragging
force, so jack up the front wheels and check the rotation
condition of the wheels in this state for no effect by the
viscous coupling’s dragging force.
REAR WHEEL MEASUREMENTSAfter placing the rear wheels on the brake tester, follow the
same procedures as for the front wheel measurements.
WHEEL BALANCE
FRONT WHEEL MEASUREMENTS‘d
1. Jack up the rear wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the front wheels and set a pick-up stand and
balancing machine in place.
Caution
1.Set so that the front and rear of the vehicle are at
the same height.
2. Release the parking brake.
3. Rotate each wheel manually and check to be sure
that there is no dragging.
3. Use the engine to drive the tires, and then make the
measurements.
Caution
1.If an error is indicated in the state of engine drive,
motor drive can be used concurrently.
2. Do not operate the clutch suddenly, or increase or
reduce speed suddenly during the work.
REAR WHEEL MEASUREMENTS1. Jack up the front wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the rear wheels, and then, after setting a pick-up
stand and balancing machine in place; follow the same
procedure as for front wheel measurements.
\
\L)
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FOR AWD MODELSMOOUAACBRAKE TEST
‘dIn order to stabilize the viscous coupling’s dragging force, the
brake test should always be conducted after the speedometer
test.

GENERAL - General Data and Specifications
GENERAL DATA AND SPECIFICATIONS
00-21
MOOHA- -
c-i----J---i!--8GENERALSPECIFICATIONS
Vehicle dimensionsmm (in.)
Overall length
1
Overall width2
Overall height3
Wheelbase4
Tread
Front5
Rear6
OverhangFront7
Rear8
Minimum running groundclearance9
Angle of approachdegrees10
Angle of departuredegrees11
Vehicle weightkg (tbs.)
Curb weights
MIT
AI-T
Gross vehicle weight rating
Gross axle weight rating
Front
Rear
Seating capacity
Engine
Model No.
Piston displacementcm” (cu.in.)
3000GT
(Non-Turbo)
4,545(178.9)
1,840(72.4)
1,285(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145(5.7)
12.2”
16.9”
1,455 (3,208)
1,495 (3,296)
1,925 (4,244)
1,100 (2,425)
850 (1.874)
4
6G72-(DOHC)
2,972 (181.4)3000GT SL
(Non-Turbo)
4,545(178.9)
1,840(72.4)
1,285
(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145(5.7)
12.2”
16.9”
1,520 (3,351)
1,560 (3,439)
1,925 (4.244)
1,100 (2,425)
850 (1,874)
4
6G72-(DOHC) -
2,972 (181.4)
+64
OOFO015
3000GT VR-4
(Turbo)
4,545(I 78.9)
1,840
(72.4)
1,285(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145 (5.7)
12.2”
16.9”
1,710 (3.770)1,720 (3,792)“’
-
2,050 (4.519)
1,110 (2,447)940
(2,072)
4
6G72-(DOHC)
2,972 (181.4)
NOTE“I : <4ws>
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GENERAL - Master Troubleshootina00-27HARD STEERING
L
L
Symptom
Hard steeringProbable causeLoose power steering oil pump belt
Reference page or remedy37A-8
1POOR RETURN OF STEERING WHEEL TO CENTER
Symptom
Poor return of steering wheelto center
Probable cause
Improper front wheel alignment
Improper tire pressure
Excessive tightened rack support cover
Damaged front wheel bearing
Reference page33A-4
31-3
37A-1926-10
Low fluid levelReplenish
Air in power steering system37A-10
Low tire pressure
313
Excessive turning resistance of lower arm ball33A-9joint
Excessively tightened steering gear box
rack support cover
37A-19
Improper front wheel alignment
Excessive turning resistance of tie-rod ball
joint
Sticky flow control valve
Bent rack in steering gear box33A-437A-6
37A-30
37A-19
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