steering wheel adjustment MITSUBISHI 3000GT 1991 Service Manual

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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ENGINE - Service Adiustment ProceduresII-13
I_ ianltion tlminaI!H Connector for Igdpstment 6rown)
4tll II -7FUO9371IGNITION TIMING ADJUSTMENTMllFLAF
(1) The vehicle should be prepared as follows before the
inspection and adjustment.
lEngine coolant temperature: 80 - 95°C (176 - 205°F)
l Lights, electric cooling fan and accessories: OFF
l Transaxle: neutral
(P for A/T)l Steering wheel: neutral position
(2) Insert a paper clip to the connector, and connect a
tachometer to the paper clip.
NOTEDo not use the Multi-use tester.
If tested with the Multi-use tester connected to the
diagnosis connector, the ignition timing will not be the basic
timing but be ordinary timing.
(3) Set the timing light.
(4) Start the engine and run at idle.
(5) Check curb idle speed.
Curb idle speed: 700
f 100 rpm
NOTEThe engine speed indicated is a third of actual speed. In
other words, the reading of the tachometer times 3 is actual
speed.
(6) Turn OFF the ignition switch.
(7) Using a jumper wire, ground the ignition timing adjusting
terminal.
NOTEGrounding this terminal sets the engine to the basic ignition
timing.
\(8) Start the engine and run at idle.
(9) Check basic ignition timing.
Basic ignition timing: 5” BTDC
k 2”
(10)lf not within the standard value range, loosen the crank
angle sensor mounting nut and adjust by turning the crank
angle sensor. Turning it to the counterclockwise retards
timing, and to the clockwise advances it.
(1 l)After adjustment, tighten mounting nut taking care not to
move the crank angle sensor.
(12)Turn OFF the ignition switch.
(13)Disconnect the jumper wire connected at step (7).
(14)Start and run the engine at curb idle speed.
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11-14ENGINE - Service Adjustment Procedures
(15)Check to be sure that the idling ignition timing is the correct
timing.
Actual ignition timing: Approx. 15” BTDC
NOTE:d
(1) Ignition timing is variable even under normal operation.
(2) And it is automatically advanced at higher altitudes.
CURB IDLE SPEED INSPECTIONMllFMAB
(1) The vehicle should be prepared as follows before the
inspection.
lEngine coolant temperature: 80 - 95°C (176 - 205°F)
l Lights, electric cooling fan and accessories: OFF
l Transaxle: neutral
(P for A/T)l Steering wheel: neutral position
(2) Connect a tachometer. (Refer to P.l l-1 3.)
(3) Set a timing light.
(4) Using a jumper wire, ground the ignition timing adjusting
terminal.
(5) Start the engine and let it idle.
(6) Check whether or not the ignition timing is the standard
value; if not, adjust.
Standard value: 5” BTDC + 2”
NOTECheck the ignition timing with the Multi-use tester not
connected to the diagnosis connector.
(7) Remove the jumper wire from the ignition timing adjusting
terminal.
(8) When using the Multi-use tester, turn OFF the ignition
switch and connect the tester to the diagnosis connector.
(9) Idle the engine for two minutes.
(10)Check the idle speed.
Curb idle speed:
700 + 100 rpm
NOTE(1) The idling speed is automatically regulated by the
idle-speed control system.
(2)’ The engine speed indicated is a third of actual speed. In
other words, the reading of the tachometer times 3 is
actual speed.
(1l)lf not within the standard value range, refer to GROUP 13 -Service Adjustment Procedures.
d
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11-16ENGINE - Service Adjustment Procedures
MANIFOLD VACUUM INSPECTION
MllFNAR
(1) The vehicle should be repaired as follows before the
inspection.
lEngine coolant temperature: 80 - 95°C (176 - 205°F)‘dl Lights, electric cooling fan, and accessories: OFF
l Transaxle: Neutral
(P for A/T)l Steering wheel: neutral position
(2) Connect a tachometer. (Refer to P.l l-l 3.)
(3) Disconnect the vacuum hose from the nipple for taking off
fuel pressure regulator vacuum from the air intake plenum.
(4) Conncet a three-way joint between the removed vacuum
hose and the nipple and connect a vacuum gauge to the
joint.
(5) Start the engine and check that idle speed is within the
standard value range.
(6) Check the manifold vacuum.
Standard value:
*
Approx. 520 mmHg (20 in.Hg)
Approx. 495 mmHg (19 in.Hg)LASH ADJUSTERS CHECK
Ml 1 FEAFIf an abnormal noise is heard from the lash adjusters, check as
follows.
(1) After warming up the engine, stop it.
(2) While installed to the cylinder head, press the part where
the rocker arm contacts the lash adjuster at the very top. If
the adjuster is normal, the part pressed will feel very hard.
d
(3) If it easily moves all the way downward when pressed,
there is a malfunction of the lash adjuster and it should be
replaced with a new one.
(4) If it feels spongy or elastic, probably oil with air mixed in it
has entered the lash adjuster. Check whether the amount
of oil is too much or is not enough and the cause of air
becoming mixed into the oil is a damaged oil screen or oil
screen gasket.
(5) After repairing the cause of the air leak, warm up the engine
and then drive the vehicle at low speed for a while. Stop the
engine and leave it off for a few minutes; then restart the
engine and drive at low speed. Repeat this procedure
several times during the course of about one hour so as to
remove the air from the oil.
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SERVICE ADJUSTMENT PROCEDURES
MlBFHSU
BASIC IDLE SPEED ADJUSTMENT
NOTE(1) The basic idle speed has been factory-adjusted with the
speed adjusting screw (SAS) and does not normally require
adjustment.(2) If the adjustment is required, first check that the ignition
plug, injector,
ISC servo, and compression pressure are
normal.
(1) Before starting the inspection and adjustment procedures,set the vehicle in the following conditions:
l
Engine coolant temperature: 80 to 95°C (176 to 205°F)l Lights, electric cooling fan, accessories: OFF
lTransaxle: Neutral (P range on vehicles with automatic
transaxle)l Steering wheel: Straightforward position
(2) When using the multi-use tester, connect it to the diagnosis
connector.
NOTEThe connection of the multi-use tester grounds the
self-
diagnosis/data transmission selector terminal.
(3) When not using the multi-use tester, proceed as follows:
@) Insert a paper clip into the l-pin blue connector as
shown in the illustration. FUEL SYSTEM
- Service Adjustment Procedurks13-31
i
@ Connect a primary-voltage-detecting tachometer to the
paper clip.
NOTEThe
tacho/neter should read l/3 of the actual engine
speed. This means that the actual engine speed is thetachometer reading multiplied by 3.
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FUEL SYSTEM- On-vehicle Inspection of MPI Components13-81
INSPECTIONUsing Multi-use Tester
Function
Data readingItem No. Data displayCheck conditionSteering wheelNormal indication
27Switch stateEngine: IdlingSteering wheel neutralOFFposition (wheels
straight-ahead direction)
Steering wheel half turn
ON
Checking Oil Pressure
Steering wheelOil pump delivery pressure (ref. value)
Straight forward700 - 1,200 kPa (100 - 171 psi)
Turned1,500
- 2,000 kPa (213 - 284 psi)
HARNESS INSPECTION
i1
@ Harness side
connector
Measure the power supply voltage.
SENSOR INSPECTIONRefer to GROUP 37
- Service Adjustment Procedures.
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a-10CLUTCH - Clutch Control
CLUTCH CONTROL
REMOVAL AND INSTALLATIONMZlJA-
-
03% J 2’ti
m
I.“0050I
Pre-removal Operationl Draining of the Clutch Fluid
l Bleeding of the Clutch Line (Refer to P.21-7.)l Adjustment of Clutch Pedal (Refer to P.21-5.)Clutch master cylinder removalstep
1. Brake booster(Refer to GROUP 35 - Brake Booster.)2. Clevis pin 3. Clutch master cylinderl *Adjustment of piston to push rod clearance
4. Sealer3

9
Cluch tube
1.
**5.
6.
l +7.**8.9.IO.11.
a* l * 12.
\Gk
6
removal steps
Brake booster15Nm
-11 ft.lbs.
(Refer to GROUP 35
- Brake Booster.)Air hose A Air cleaner cover, air intake hose cFWD>.Air cleaner cover, air intake hose A Vacuum pipe Battery
Battery seat, washer tank
Steering column assembly
(Refer to GROUP 37A- Steering Wheel and
Shaft.)
Clutch tube15 Nm
11
ft.lbs.
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FRONT AXLE - Troubleshooting / Service Adjustment Procedures
TROUBLESHOOTING
26-5
MPBEBAA
i.
Symptom
Vehicle pulls to one
side
Vibration
Shimmy
Excessive noiseProbable cause
Seizure of drive shaft ball joint
Abnormal wear, play or seizure of wheel bearing
Malfunction of front suspension or steering
Bend, damage or abnormal wear of drive shaft
Play in drive shaft and hub serration
Abnormal wear, play or seizure of wheel bearing
Improper wheel alignment
Malfunction of front suspension or steering
Broken boot, grease leakage
Bend, damage or abnormal wear of drive shaft
Play of drive shaft and hub serration
Abnormal wear, play or seizure of center bearing
Abnormal wear, play or seizure of wheel bearing
Loose wheel nut
Malfunction of front suspension and steering
Remedy
Replace
Replace
Adjust or replace
Replace
Replace
Replace
Adjust or replace
Adjust or replace
Replace, repack grease
Replace
Replace
Replace
Replace
Retighten
Adjust or replace
u11 A0285
SERVICE ADJUSTMENT PROCEDURES
HUB END PLAY INSPECTIONM26FAAE1. Jack up the vehicle and remove the front wheels.
2.Remove the disc brake caliper and suspend it with a wire.
(Refer to GROUP 35
- Service Adjustment Procedures.)
3.Attach a dial indicator as shown in the illustration, and then
measure the axial play while moving the hub back and forth.
Limit: 0.05 mm (.002 in.)
4.If axial play exceeds the limit, disassemble and check parts.
,
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32-6POWER PLANT MOUNT -Right Member, Left Member and Crossmember
RIGHT MEMBER, LEFT MEMBER AND CROSSMEMBER
I
M32YA- _
REMOVAL AND INSTALLATION
(Referto GROUP 51 -Front Bumper.)No. 1 crossmember, Left member,
Right member
60-70Nm43 - 51 ft.lbs.
11
F=----lL90Nm
’65 ft.lbs.
/I
Post-installation Operationl Installation of Under Cover(Referto GROUP 51 -Front Bumper,)l Air Bleeding of the Power-steeringFluid (Refer to GROUP 37A-Service Adjustment Procedures.)l Adjustment of the Front Wheel
Alignment (Refer to GROUP 33A-Service Adjustment Procedures.)l Supplying of Transfer Oil (Refer to GROUP 00 - Maintenance
Service.)60-70 Nm
43 - 51 ft.lbs.60-70 Nm
43 - 51 ftlbs.
/aa lVOiFOO4760
- 70 Nm’43 - 51 ft.lbs.lemoval steps of No. 1 crossmember,
M member, right member
I. Cover installation screw2. Left member
3. Connection of clutch vacuum hose
4. Vacuum tank installation bolt
5. Right member
6. Vacuum tank
7. Front roll stopper installation bolt
8. No. 1 crossmember installation nut
9. Lower plate
10. No. 1 crossmember
11. Stopper(B)
12. Bushing
(B)
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33A-4FRONT SUSPENSION - Service Adjustment Procedures
Strut lowermounting bolt(upper)
\/
0 camber@ camber12FOO31
SERVICE ADJUSTMENT PROCEDURES
M33FBAT
FRONT WHEEL ALIGNMENT‘d
TOE-INStandard value: 0 2 3 mm (0 +
.12 in.)
1. Adjust the toe-in by undoing the clips and turning the left
and right tie rod turnbuckles by the same amount (in
opposite directions).
2.After making the adjustments, use a turning radius gauge to
confirm that the steering wheel turning angle is within thestandard value range. (Refer to GROUP 37A
- Service
Adjustment Procedures.)Standard value:
Inner wheel
33”45’Outer wheel
28”21’
CAMBER AND CASTERStandard value:
Camber0” IL 30’
Caster3”55’ IL 30’
Install the special tool by tightening it to the same torque as
that applied to the drive shaft nut.
a
To adjust camber, turn the strut lower mounting bolt (upper).
One graduation is equivalent to about 20’ in camber. Caster hasbeen factory-adjusted to the standard value and requires no
adjustment.
Caution
1.One camber graduation changes toe by about 0.5 mm
(.02 in.). Be sure to adjust toe after camber has been
adjusted.
2.The difference in camber between right and left shouldbe within
O”30’.
WHEEL BEARING ADJUSTMENTM33FCAA
Bearing preload is pre-set to the specified value by design andtherefore can not be adjusted.
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