seat adjustment MITSUBISHI GALANT 1989 Service Repair Manual

II-IOENGINE - Service Adjustment Procedures
(3) Remove the PCV hose from the PCV valve and attach a
vacuum gauge.
(4) Check that the negative pressure at the intake manifold
during idle revolution is normal.
Standard value:
(8 VALVE>Approx. 500 mmHg (20 in.Hg)
<16VALVE>Approx. 510 mmHg (20 in.Hg)
(5) If outside the standard value, isolate the cause by referring
to the following table and repair the fault.
Symptom
CauseRemed
y
l The vacuum gauge reading is less than l Ignition timing is retarded.l Adjust the ignition timing.
standard value, but the pointer is
stable.
l The vacuum gauge pointer swings l The gas mixture is excessivelyl Check
Multiport Fuel Injection
slowly.rich.system.
l The vacuum gauge pointer drops irre-
l The gas mixture is excessively
l Check
Multiport Fuel Injectiongularly.lean.system.
l The vacuum gauge pointer drops inter-
0 Incomplete close contact of in-0 Check and repair the valve.mittently to 30 to 160
mmHg
(1.2 to take and exhaust valve seats.
6.3 in.Hg).
l The vacuum gauge pointer drops sud-l Broken cylinder head gasketl ,Replace cylinder head gasket. denly
from the normal reading to 250 mmHg
(9.8 in.Hg). then returns to
normal.
/ OlR0175
condition.
Timina mark
‘timing mark._*-
Camshaft sprocket TIMING BELT TENSION ADJUSTMENT
(8 VALVE>MllFGCEa
There are 2 access holes in the timing belt front lower cover.
These can be used to readjust the tension of the timing belt by
the following procedure without removing the timing belt front lower cover. However, timing belt “B”, which drives the right
silent shaft, cannot be adjusted unless the cover is removed. (1) Turn the steering wheel all the way to the left.
(2) Remove the left side undercover panel.
NOTE
This work is done so that the crankshaft can be turned.
(3) Place a piece of wood against the engine oil pan and jac
k
up.(4) Remove the engine mounting bracket.
(5) Remove the timging belt front upper cover.
(6) Remove the four spark plugs.
(7) Turn the crankshaft clockwise and check the timing belt
(8) Turn the crankshaft clockwise and align the timing marks.
TSB Revision1

II-60ENGINE -Service Adjustment Procedures
(9) If a cylinder’s compression pressure or pressure differenceis outside the limit, fill a small amount of engine oil through
the spark plug hole and repeat Items (7) and (8) above.
@ If the compression is increased when the oil is filled, the piston
and/or cylinder wall may be worn or
damaged.
@ If the compression is not Increased even though the oil is filled, the valve may be thermally seized, the valve
contact may be improper or pressure may leak at the
gasket. (10)Connect the connector of the crankshaft position sensor.
(1l)lnstall
the spark plug and spark plug cable.
(12)Erase the diagnostic trouble code with the scan tool or re-
connect the battery (-)
cable 10 seconds or more after it
was disconnected.
NOTE
This will erase the memory of the diagnostic trouble code which resulted from disconnection of the crankshaft posi-
tion sensor connector.
MANIFOLD VACUUM INSPECTION MllFNAD
(1) Before inspection and adjustment, put the vehicle into the following state.
l Engine coolant temperature:
85-95°C (185-205°F)
l Lights, motor cooling fan, and accessories: OFF
l Transaxle:
N (Neutral)
l Steering wheel: Neutral
(2) Check that the idling revolution speed is normal.
(3) Remove the PCV hose from the PCV valve and attach a
vacuum gauge.
(4) Check that the negative pressure at the intake manifold
during idle revolution is normal.
Standard value: Approx. 500 mmHg
(20 in.Hg)
(5) If outside the standard value, isolate the cause by referring to the following table and repair the fault.
Symptom
CauseRemedy
l The vacuum gauge reading is less thanstandard value, but the pointer isl Ignition timing is retarded. l Adjust the ignition timing.
stable.
l The vacuum gauge pointer swings
slowly.l The gas mixture is excessivelyrich.l Check Multiport fuel injectionsystem.
l The vacuum gauge pointer drops irre- gularly.
l The gas mixture is excessively
lean.l Check Multiport
fuel injectionsystem.
l The vacuum gauge pointer drops inter-mittently to 30 to 160 mmHg
(1.2 to * Incomplete close contact of Intake
and exhaust valve seats.l Check and repair the valve.
6.3 in.Hg).
l The vacuum gauge pointer drops sud- denly
from the normal reading to 250 . Broken cylinder head gasketl Replace cylinder head gasket.
mmHg (9.8 in.Hg), then returns tonormal.
TSB Revision

FUEL SYSTEM - On-Vehicule Inspection of MFI Components13-65
(1) Improper adjustment of the basic idling speed.
(2) Deposits adhering to the ttirottle valve.
(3) Air being taken into the intake manifold due to a gasket leak, etc.
OPERATION
ISC motor position sensor is a variable resistor type,
and is integrated in the
ISC motor system. The slid-
ing pin of
ISC motor position sensor is in contact
with the end of the plunger. Therefore, as the plun- ger moves, the internal resistance of
ISC motor pos-
ition sensor varies. This leads to the variation of the (4) Improper seating of the EGR valve seat.
(5) lmcomplete combustion within a cylinder. (Mal-
function of spark plugs, ignition coil, injectors,
compression pressure, etc.)
the plunger position of the
ISC motor system, and
sends the signal to ECM. ECM processes the
ISC
motor position sensor signal, idle signal, coolant
temperature signal, load signal (A/T &
A/C) and ve-
hicle speed signal to control the opening angle of
the throttle valve and revolution speed during
en-
output voltage. ISC motor position sensor detects gine idling.
TROUBLESHOOTING HINTS
Since idling is not controlled when ISC motor posi-
tion sensor is troubled, idling may not be evenly
maintained.
INSPECTION
Using Scan tool
FunctionItem No. Data display Inspection conditions Load conditions
Standard value
Data reading 15 Sensor detec-
. Engine coolant tempera-
Air conditioning 500- 1,300 mV
tion voltage
ture: 85-95’C (185-203°F)
switch: OFF
. Lights, cooling fan, electrical accessories: OFF Air conditioning 800-
1,800 mV. Transaxle: neutral (A/T
mod-
switch: ON
els: “P”
range)
1 Closed throttle position Air conditioning900- 1,900 mVswitch: ON (The compressorswitch: ON
clutch must be operating Select lever:
when the air conditioning shift to “D”
switch is ON.)
range.* Engine: running at idle
NOTEThe idle speed control motor position sensor output voltage may be about\
500 mV higher than indicated above when
the vehicle is new [driven approximately 500 km (300 miles) or less].
CautionBefore shifting the select lever to the “D” range, apply the brake\
s to prevent the vehicle from moving forward.
HARNESS INSPECTION
Measure the power supply voltage of
the idle speed control motor position
ei;;;it;;sco$ected
__...._ -.-
TSB Revision

FUEL SYSTEM -On-Vehicle Inspection of
MFI Components13-299
OPERATION
l The amount of air taken in during idling is
regulated by the opening and closing of the
servo valve located in the air passage that
bypasses the throttle valve.
l The servo valve is opened or closed by the
activation of the stepper motor (incorporated
within the idle air control motor) in the forward
or reverse direction.
TROUBLESHOOTING HINTS
Hint 1: If the number of stepper motor steps increases to
IOO- 120 steps or decreases
to 0 step, the cause may be presumed to be a malfunction of the stepper motor or
damaged or disconnected wiring of the
harness.
Hint 2: If the number of stepper motor steps
deviates from the standard value even
though the results of the checking of the
harness of the idle air control motor and of
the comoonent
itself indicate no abnormal
condition, the cause may be presumed to be one of the following.
INSPECTION
Using Scan tool
lBattery power supply is supplied, by way of the
multiport fuel injection relay, to the coil of the
stepper motor. The engine control module
switches ON the power transistors (located
within the engine control module) in sequential
order, and, when current flows to the stepper motor coil, the stepper motor is activated in the
forward or reverse direction.
(1) Improper adjustment of the standard
idling speed.
(2) Deposits adhered to the throttle valve.
(3) Leakage of air into the intake manifold
from a gasket gap, etc.
(4) Incomplete close contact of the EGRvalve seat.
(5) Incomplete combustion within the
cylinder.
(Malfunction of the spark plugs, the
ignition coil, the iniectors,
the
com- pression
pressure, etc.)
FunctionItem No.Data display Check conditions Load conditionsStandard value
Data reading 45Steppermotor steps. Engine coolant tempera-
. Air conditioning
4-14Step
ture:switch: OFF 85-95°C

(185-205°F)
. Lights, electrical cooling
:$b::pfan and accessories: OFF
. Transaxle: neutral
. Closed throttle switch: ON
- Air conditioning 20-60 Step
switch: ON
(The compressor clutchshould be activated when
the air conditioning switch;J-;;o~P
is switched ON.)* Engine: idling
1;:!,1;:!,
/!-I\/!-I\
f$&$:”f$&$:”
! ,‘,! ,‘,
4);4);
;jj\(Q(j!jGZ-);jj\(Q(j!jGZ-)
lili
q#Q~Hq#Q~HF]F]
ii 2 L J 2 L ~ -0SClllO 4ii 2 L J 2 L ~ -0SClllO 4
NOTE
When the vehicle is new (driven approximately 500 km (300 miles) or l\
ess) the number of steps may be about
30 steps greater than the standard value indicated above.
Using Oscilloscope
(1) Connect the probe to each oscilloscope pick-up point as
shown in the circuit diagram.
(2) Start the engine.
(3) When the air conditioning switch is turned on, the idling speed increases to operate the idle air control. Check theinstantaneous waveform.
NOTE
Keep in mind that the waveform can be observed only
when idle air control is in operation.

INTAKE AND EXHAUST - Service Adjustment Procedures15-7
Turbocharger waste
gate actuator
05A0150
OSAOlSl
TURBOCHARGER SUPERCHARGING PRESSURE
INSPECTIONM7!%3AAB
Caution
Perform running inspection with two passengers in tha
vehicle and where full throttle acceleration can ba sefely
made.
The pressure gauge reading is taken by a front seat
passenger.
(1) Disconnect the supercharging pressure control hose at the
solenoid valve (fixed to the air cleaner), and plug the nipple.
Attach the pressure gauge to the hose.
(2) Drive the vehicle with full throttle and accelerate the engine to a speed of more than 3,500 rpm at
2nd gear. Measure
the supercharging pressure when the pointer is stabilized.
Standard value:
31-70 kPa (4.4-10.1 psi)
Caution
If the supercharging pressure deviates from the standard
value, check the following items for possible causes.
When pressure is high: Turbocharger waste gate actuator malfunction
When pressure is low: Turbocharger waste gate actuator malfunction
Supercharging pressure leaks
Faulty turbocharger
INTAKECHARGEPRESSURECONTROL
SYSTEM INSPECTION
MlSGFAAa
(1) Disconnect the vacuum hose (white-striped) from the tur- bocharger waste gate actuator, and connect the hand va-
cuum pump to the vacuum hose.
(2) Disconnect the vacuum hose (black) from the boost nipple which controls the turbocharger waste gate actuator.
(3) Insert the blind plug into the nipple from which the vacuum hose was disconnected.
(4) Keep the
(-) terminal of the battery disconnected for 10
seconds or longer, and then reconnect the terminal.
(5) Close and open the vacuum hose (black) end with your
finger, and apply negative pressure to check the negative
pressure state.
Engine state
stop(Ignition
switch: ON)
Idling Hose (black)
Opened
Normal state
Negative pressure
leaks.
Closed by fingerNegative pressure is
maintained.
Negative pressure
leaks.
NOTE
If negative pressure is not normal, it can be assumed that
there is a malfunction in the turbocharger waste gate sole-
noid or vacuum hose.
TSB Revision

FRONT AXLE - Hub and Knuckle26-11
MB990883-0
1
I IUII12A0545
m
MB990847-01
MB990998-07
IMB99099&0 1
SERVICE POINTS OF REASSEMBLYM26lHAL
5. INSTALLATION OF WHEEL BEARING
(1) Fill the wheel bearing with multipurpose grease.
(2) Apply a thin coating of multipurpose grease to the knuckle and bearing contact surfaces.
(3) With the wheel bearing inner
race removed, press-in
the bearing by using the special tools.
(4) Install the wheel bearing inner race to the wheel
bearing.
4. INSTALLATION OF OIL SEAL (HUB SIDE)
(1) Drive the oil seal (hub side) into the knuckle by using
the special tools until it is flush with the knuckle end
surface.
(2) Apply multipurpose grease to the lip of the oil seal and
to the surfaces of the oil seal which contact the front
hub.
1. INSTALLATION OF FRONT HUB
(1) Use the special tool to mount the front hub assembly
onto the knuckle.
(2) Tighten the nut of the special tool to
200-260 Nm
(144- 188 ft.Ibs.).
(3) Rotate the front hub assembly in order to seat the
bearing.
(4) Leave the special tool in place and take the measure-
ments described below.
l ADJUSTMENT OF WHEEL BEARING STARTING
TORQUE
(1) Measure the wheel bearing starting torque (hub starting torque) by using the special tools.
Limit: 1.8 Nm (16
in.lbs.) or less
NOTE
The starting torque must be within the limit and, in addition, the bearing must not feel rough when
rotated.
TSB Revision

REAR AXLE - Special Tools/Service Adjustment Procedures27-3
SPECIAL TOOLS
MZ7VA-A
ToolNumber
GENERAL
SERVICE TOOL
NameUse
Bearing and oil sealinstaller setInstallation of outer bearing outer race
Installation of inner bearing outer race Installation of oil seal
M B990938-01Handle
MB990890-01Bushing removerand installer baseInstallation of the drive gear
OPTIONAL: AVAIlABLE FROM O.T.C.
Turn 180” or more
360” or more.
SERVICE ADJUSTMENT PROCEDURES
WHEEL BEARING END PLAY ADJUSTMENTmw

1.Inspect the play of the bearings while the vehicle is jacked
up and resting on floor jack.
2.If there is any play, remove the hub cap, cotter pin, and lock
cap, and then loosen the lock nut.
3.After tightening the lock nut to 20 Nm (14 ft.lbs.1, turn the
hub a few times to seat it to the bearing.
4. In order to seat the bearing properly, turn the hub (brake drum) 180” or more and then return it 360” or more; repeat
this procedure again three or more times.
5. Return the lock nut to 0 Nm
(0 ft.lbs.).
6.After tightening the lock nut at a torque of 10 Nm (7 ft.lbs.1,
rotate the hub again in the same way as described in step 4
so as to seat the bearing.
7. Then once again tighten the lock nut to 10 Nm (7
ft.lbs.).
8. Install the lock cap and cotter pin. If the position of the cotter pin is not matched with the
holes of the lock cap, reposition the lock cap so that the
holes align. If this can not be accomplished, back off the nut
by not more than 15”.
Caution
Check to be sure that the lock nut cannot be loosened
manually.
9.After setting the cotter pin in place, seat the bearing in the
same manner as in step 4.
TSB Revision

REAR AXLE - Service Adiustment Procedures27-5
REAR HUB ROTARY-SLIDING !RESlSTANCE
(TORQUE) ADJUSTMENTMZ7FCAC
1.
2.
3.
4.
Inspect the play of the bearings while the vehicle is
jacked up and resting on floor jack.
Release the parking brake.
Remove the caliper assembly and the brake disc.
After turning the hub a few times to seat the bearing,
attach a spring balance and rope to the hub bolt, and, pull- ing at a
90” angle from the hub bolt, measure to determine
whether or not the rotary-sliding resistance of the rear hub
is the standard value.
Limit:
5.
6.
Rear hub rotary-sliding resistance
31 N (7 Ibs.) or less
If the rear hub rotary-sliding resistance is exceed, loosen
the nut and then tighten it to the specified torque, and
check the rear hub rotary-sliding resistance again.
Replace the rear hub bearing unit if an adjustment cannot
be made to within the limit.
TSB Revision1

27-36REAR AXLE - Differential Carrier
lllllllll
1
7
(4) Position the special tool in the side bearing seat of thegear carrier, and then select a drive pinion rear shim of a
thickness which corresponds to the gap between the
special tools.
NOTE
Clean the side bearing seat thoroughly. Confirm that the
special tool is in close contact with the side bearing
sf?at---_.
When selectina
the drive oinion rear shims. keen the .--~ _.._
number of shims to a minimum.
(5) Fit the selected drive pinion rear shim(s) to the drive pinion, and press-fit the drive pinion rear bearing inner
race by using the special tool.
. ADJUSTMENT OF DRIVE PINION PRELOAD Adjust the drive pinion turning torque by using the followingprocedures
:
(1) Fit the drive pinion front shim(s) between the drive pinion spacer and the drive pinion front bearing inner
race.
(2) Tighten the companion flange to the specified torque by using the special tools.
NOTE
Do not install the oil seal.
(3) Measure the drive pinion turning torque (without the oilseal) by using the special tools.
Standard value:
Bearing Bearingclassification lubrication
Rotation torque
(starting friction torque)
Nm (in.lbs.)
(4) If the drive pinion turning torque is not within the range
of the standard value, adjust the turning torque byreplacing the drive pinion front shim(s) or the drive
pinion spacer.
NOTE
When selecting the drive pinion front shims, if the
number of shims is large, reduce the number of shims
to a minimum by selecting the drive pinion spacers.
(5) Remove the companion flange and drive pinion once
again.
Drive the oil seal into the gear carrier front lip by using
the special tool.
I
I1 TSB Revision