height MITSUBISHI 3000GT 1991 User Guide

27-28
REAR AXLE - Differential Carrier
Standard tooth contact pattern
1 Narrow tooth side
2 Drive-side tooth surface (the side applying
power during forward movement)
3 Wide tooth side
4 Coast-side tooth surface (the side applying
power during reverse movement)
2
34
ProblemTooth contact pattern resulting from exces-
sive pinion heightSolution
The drive pinion is positioned too far from the center ofthe drive gear.Increase the thickness of the pinion height adjustingshim, and position the drive pinion closer to the centerof the drive gear.
Also, for backlash adjustment, position the drive gearfarther from the drive pinion.
Tooth contact pattern resulting from insuffi-
cient pinion height
ectdb
e52 34&$%$I$&2 3 4
The drive pinion is positioned too close to the center ofthe drive gear.Decrease the thickness of the pinion height adjustingshim, and position the drive pinion farther from the
center of the drive gear.
Also, for backlash adjustment, position the drive gearcloser to the drive pinion.
11 S642
NOTE(I)Tooth contact pattern is a method for judging the result of the adjustment of drive pinion height and final drive gear
backlash. The adjustment of drive pinion height and final drive gear backlash should be repeated until tooth contactpatterns bear a similarity to the standard tooth contact pattern.
(2)When adjustment is not able to obtain a correct pattern, it may be judged that the drive gear and drive pinion haveexceed their usage limits and both gears should be replaced as a set.
,
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DISASSEMBLYREAR AXLE
- Differential Carrier27-29
M27lF- -
inspection Before Disassemblyl Final Drive Gear Backlash(Refer to P.27-26.)l Drive Gear Runout(Refer to P.27-26.)l Final Drive Gear Tooth Contact(Refer to P.27-26.)Disassembly steps
1. Differential cover assembly2.Vent plug
3.Oil seal
4.Snap ring4*5. Side bearing nut4*6. Side bearing outer race7. Differential case assembly4*8. Side bearing inner race4*9. Drive gear (for 4WS)4*10. Drive gear
11. Spring pin (for 4WS)4*12. LSD case (refer to P.2759.)4*13. Self-locking nut14:Washer
4*
4*
4*4*4*
64 111 FO032
15. Drive pinion assembly
16. Companion flange
17. Drive pinion front shim
(for preload adjustment)18. Drive pinion spacer19. Drive pinion rear bearing inner race20. Drive pinion rear shim
(for pinion height adjustment)
21. Drive pinion
22. Oil seal
23. Drive pinion front bearing
24. Drive pinion rear bearing outer race
25. Differential carrier’
SERVICE POINTS OF DISASSEMBLYM27lGBD5. REMOVAL OF SIDE BEARING NUT
Using the special tool, remove the side bearing nut.
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27-32
REAR AXLE - Differential Carrier
REASSEMBLYM2711- .
1Reassembly steps
**1. Spring pin (for 4WS)l *2. Drive gear (for 4WS)3. Differential carrierl *4. Drive pinion rear bearing outer race**5. Drive pinion front bearing outer race*aDrive pinion height adjustment
6. Drive pinion
7. Drive pinion rear shim
(for drive pinion height adjustment)
8. Drive pinion rear bearing inner race
9. Drive pinion spacer
l *Drive pinion preload adjustment10. Drive pinion front shim
11. Drive pinion assembly
12. Drive pinion front bearing inner race
13. Oil seal
14. Companion flange
15. Washer
16. Self-locking nut
17. LSD case (Refer to
P.27-39.)** 18. Drive gear** 19. Side bearing inner race
20. Side bearing outer race
l *Final drive gear backlash adjustment21. Differential case assembly
22. Side bearing nut
23. Snap ring
** 24. Oil seal
25. Vent plug
26. Differential cover assembly
NOTE*:Tightening torque with oil applied.TSB Revision

27-34
REAR AXLE - Differential Carrier
YYW!-01
I1 11AOlOl
MB99Y2232. PRESS-IN OF THE DRIVE GEAR (FOR 4WS)
(1) With the beveled (large) part of the rear wheel oil pump
drive gear at the inner side, press in the drive gear (by
using the special tool) until the drive gear contacts theend surface of the
.differential case.
(2) Check to ensure that the drive gear and the spring pin
are flush.4. INSTALLATION OF DRIVE PINION REAR BEARING
OUTER RACE
/ 5. DRIVE PINION FRONT BEARING
OUTER RACE
Press-fit the drive pinion rear and front bearing outer racesinto the gear carrier by using the special tools.
CautionBe careful not to press in the outer race at an angle.
. DRIVE PINION HEIGHT ADJUSTMENT
Adjust the drive pinion height by the following procedures:
(1) Install special tools and drive pinion front and rear
bearing inner races on the gear carrier in the sequenceshown in the illustration.
NOTE
Apply a thin coat of multipurpose grease to the matingface of the washer of the special tool.
(2) Tighten the handle of the special tool until the standardvalue of drive pinion rotation torque is obtained.
(3) Measure the drive pinion rotation torque (without the oil
seal).
Standard value
Bearing
classificationBearing
lubricationRotation torqueNm (in.lbs.1
INew
None (with0.3 - 0.5rust-prevention oil)(3 - 4)I
New/reused
NOTEGear oil
application0.15 - 0.25
(1 - 2)
(1) Gradually tighten the nut of the special tool while checkingthe drive pinion rotation torque.
(2) Because the special tool cannot be turned one turn, turn it
several times within the range that it can be turned; then,after fitting to the bearing, measure the rotation torque.
L/1 1
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L
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SERVICE BRAKES - Specifications
SERVICE SPECIFICATIONS
3msFWDAWD
andard value
Brake pedal heightmm (in.)
177 - 182 (7.0 - 7.2)
177 - 182 (7.0 - 7.2)Brake pedal free playmm (in.)
3-8(.1 -.3)3-8(.1 -.3)Brake pedal to floorboard clearance
mm (in.)
80 (3.1) or more
80 (3.1) or more
Pad thicknessmm (in.)
10.0 (.39)10.0 (.39)Front disc thickness
mm (in.)
24.0
t.94)30.0 (1.18)
Rear disc thickness
mm (in.)
18.0 (71)
20.0 (.79)Proportioning valve pressure
MPa (psi)
Split point
3.75 - 4.25 (533 - 604)3.75 - 4.25 (533 - 604)
Output pressure [input pressure]
5.23 - 5.73 (744 - 815)f8.0 (I, 138)]5.23 - 5.73 (744- 815)18.0 (1,138)]Booster
push;; (To,,;?aster cylinder piston
clearance
7
+ 8 inch brake booster
0.55 - 0.75 (.022 - ,030)-8 + 9 inch brake booster
0.65
- 0.85 (.026 - ,033)0.65 - 0.85 (026 - ,033)Disc brake drag force (tangential force of
wheel mounting bolts)
N (Ibs.)70 (15.4) or less
70 (15.4) or less
[Disc brake dragging torque[Nm (ft.lbs.)]
[4 (3) or less][4 (3) or less]
Speed sensor’s (ABS) internal resistance
kQFront
1.4-2.2
0.8 - 1.2
Rear1.3-2.1
0.8- 1.2
Rear speed sensor pole piece-to-rotor
tooth surface clearancemm (in.)
-28.15-28.45(1.11 -1.12)
Clearance between the
spmefm;l[yle piece
and the toothed rotor
Front0.3 - 0.9 (.012 - ,035)-
Rear0.2 - 0.7 (008 - .028)-nit
Left/right proportioning valve output
pressure difference
MPa (psi)0.4 (57)
0.4 (57)Front disc run-outmm (in.)
0.1
(.004) or less
0.1 (.004) or less
Pad thicknessmm (in.)
2.0
(08)2.0 (08)Front disc thicknessmm (in.)
22.4
(.88)28.4 (1.12)Front hub end playmm (in.)
0.05
(.002)0.05 (.002)Rear disc thicknessmm (in.)
16.4
(65)18.4 (.72)Rear disc run-outmm (in.)
0.08
(0031) or less
0.08 (.0031) or less
Rear hub end playmm (in.)
0.05
(002)0.8 (.031)
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SERVICE BRAKES - Set-vice Adiustment Procedures35-45lUF51F
Pedal
7\ \!4FOO7.
F14511
F14519
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SERVICE ADJUSTMENT PROCEDURES
BRAKE PEDAL INSPECTION AND ADJUSTMENT
1.Measure the brake pedal height as illustrated. If the’brakepedal height is not within the standard value, adjust as
follows.
Standard value (A): 177
- 182 mm (7.0 - 7.2 in.)
(I) Disconnect the stop light switch connector, loosen the
lock nut, and move the stop light switch to a position
where it does not contact the brake pedal arm.
(2) Adjust the brake pedal height by turning the operating
rod with pliers (with the operating. rod lock nut
loosened), until the correct brake pedal height is
obtained.
(3) After screwing in the stop light switch until it contacts
the brake pedal stopper (just before the brake pedal is
caused to move), return the stop light switch
l/2 to 1
turn and secure by tightening the lock nut.
(4) Connect the connector of the stop light switch.
(5) Check to be sure that the stop light is not illuminated
with the brake pedal unpressed.
Reference value (6): 0.5
- 1.0 mm (.02 - .04 in.)
2. On vehicles with automatic transaxle, check the shift-lock
mechanism. (Refer to GROUP 23
- Transaxle Control.)
3. With the engine stopped, depress the brake pedal two or
three times. After eliminating the vacuum in the power
brake booster, press the pedal down by hand, and confirm
that the amount of movement before resistance is met (the
free play) is within the standard value range.
Standard value (C): 3
- 8 mm (.I - .3 in.)
If the free play is less than the standard value, confirm that
the clearance between the stop light switch and brake
pedal is within the standard value.
If the free play exceeds the standard value, it is probably
due to excessive play between the clevis pin and brake
pedal arm. Check for excessive clearance and replace faulty
parts as required.
4.Start the engine, depress the brake pedal with approximate-
ly 500 N (110
Ibs.) of force, and measure the clearance
between the brake pedal and the floorboard.
Standard value (D): 80 mm (3.1 in.) or more
If the clearance is less than the standard value, check for air
trapped in the brake line and for brake fluid leaks. If
necessary, check the brake system mechanism (excessive
shoe clearance due to faulty auto adjuster) and repair faulty
parts as required.~1~1
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35-46SERVICE BRAKES - Service Adjustment Procedures
BRAKE FLUID LEVEL SENSOR CHECK
I
MBSFBAF
Good
k‘14UOO61
When engine is
stoppedNo good
When engine isstarted
14UOO6C)Checkvalve/1. Connect a circuit tester to the brake fluid level sensor.
I
2.Move the float from top to bottom and check for continuity.
3. The brake fluid level sensor is in good condition if there is
‘k&Jno continuity when the float surface is above “A”, and if,there is continuity when the float surface is below “A”.
BRAKE BOOSTER OPERATING INSPECTION
M35FCAOFor simple checking of brake booster operation, carry out the
following tests.
1.Run the engine for one or two minutes, and then stop it.
2. Step on the brake pedal several times with normal
pressure.If the pedal depresses fully the first time but gradually
becomes higher when depressed succeeding times, the
booster is operating properly.
If the pedal height remains unchanged, the booster is
faulty.
3. With the engine stopped, step on the brake pedal several
times with the same pressure to make sure that the pedal
height will not change.
Then step on the brake pedal and start the engine.
If the pedal moves downward slightly, the booster is in
good condition. If there is no change, the booster is faulty.
4.With the engine running, step on the brake pedal and then
stop the engine.
Hold the pedal depressed for 30 seconds. If the pedal
height does not change, the booster is in good condition. If
the pedal rises, the booster is faulty.
If the above three tests are okay, the booster performance can
be determined as good.
If one of the above three tests is not okay at last, the check
valve, vacuum hose, or booster will be faulty.
CHECK VALVE OPERATION CHECKM35FNALWhen checking the check valve, keep the check valve fit in the
vacuum hose.
1. Remove the vacuum hose.
Caution
The check valve is press-fit inside the vacuum hose and
do not remove the check valve from the vacuum hose.1
d~
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TROUBLESHOOTING
BODY - Troubleshooting42-5
M42EABE
HOOD, LIFTGATE, GLASS AND DOORS
LSymptom
Probable cause
Remedy
Hood/
Improper closureLiftgateStriker and latch not properly alignedAdjust the alignment
Difficult locking and
unlockingStriker and latch not properly alignedAdjust the alignment
Uneven bodyclearanceIncorrectly installed hood or liftgateAdjust the installation of
hood, deck lid or liftgate
Uneven height
Incorrect hood bumper heightAdjust the hood bumper,deck lid bumper or liftgate
bumper heightWindow Water leak through
Defective sealFill sealant
glasswindshield
Defective body flange
Correct
Water leak through
door window glassIncorrect window glass installation
Adjust position
Gap at upper window glass
Adjust position
Water leak throughDefective sealFill sealantliftgate windowDefective body flangeCorrect
DoorsDoor windowmalfunctionIncorrect window glass installation
Adjust position
Damaged or faulty regulator
Correct or replace
Water leak through
Cracked or faulty weatherstripdoor edgeReplace
Water leak from
door centerDrain hole clogged
Remove foreign objects
Inadequate waterproof film contact or damageCorrect or replace
Door hard to open
Incorrect latch or striker adjustment
Adjust
Door does notIncorrect door installationopen or closeAdjust position
completelyDefective door check strapCorrect or replace
Door check strap and hinge required grease
Apply grease
Uneven gap
Incorrect door installation
between bodyAdjust position
yoi$ noise aroundWeatherstrip not holding firmly
Adjust fit of door
Improperly installed weatherstrip or setting of
Repair or replaceweatherstrip
Improperly closed door
Improperly fit door
Improper clearance between door glass anddoor weatherstrip holder
Deformed doorAdjust
Adjust
Adjust
Repair or replace
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BODY - Service Adjustment Procedures42-13
SERVICE ADJUSTMENT PROCEDURES
HOOD ADJUSTMENTM42FAA.L
1.Loosen the hood mounting bolts, and then adjust the hood
by moving it so that the clearance is equal on all sides.
2. Turn the bumpers A and B, adjust the height of the hood.,’
ii
18P058t
3.Loosen the hood latch mounting bolts, and move the hood
latch to adjust the attachment between the hood latch and
hood striker.
LIFTGATE ADJUSTMENTM42FCAF
1.Loosen the liftgate hinges mounting bolts, and then adjust
the
liftgate by moving it so that the clearance is equal on all
sides.
2. Turn the bumper to adjust the liftgate height.
3. Loosen the
liftgate latch mounting bolts, and move the
liftgate latch to adjust the attachment between the liftgate
latch and
liftgate striker.
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42-14BODY - Service Rdiustment ProceduresMB990834-0118A0381
18Ac-46118A0465FUEL FILLER DOOR ADJUSTMENT
M42FDAFLoosen the fuel filler door mounting screw and adjust the fuel
filler door so that the clearance around the fuel filler door is
even without any height differences.
DOOR ADJUSTMENT
M42FEAG
1.Use the special tool to loosen the hinge mounting bolts on
the body side, and then adjust the clearance around the
door so that it is uniform on all sides.
2.If the door is not flush with the body, remove the spring pin
from the door check, use the special tool to loosen the bolts
for mounting the door hinges to the door. Move the door to
adjust the door position along the body surface.
CautionAttach protection tape to the fender edges where the
hinge is installed.
3.If the door does not open freely, adjust the engagement of
the striker with the door latch by means of the striker
mounting shim and move the striker up and down or from
side to side.DOOIR WINDOW GLASS ADJUSTMENT
M42FFAL
1. Remove the door trim and waterproof film. (Refer to
P.42-41.)2. Remove the front pillar trim.
3. Remove the drip line weatherstrip.
4. Loosen the bolts and nuts of the following parts.
l Glass guide front track
l Glass guide rear track
l Delta sash
l Stabilizer inner front
l Stabilizer inner rear
. up stop
l Door belt line outer weatherstrip
NOTEMove the window glass down to the lowest position before
removing the delta sash bolt.
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