1991 MITSUBISHI 3000GT differential

22-44MANUAL TRANSAXLE - Differential Assembly
Lock pin
Pinion shaft
2 150020160124
Differen-ock pinend with4. REMOVAL OF LOCK PIN
Drive out the lock pin from the hole A using a
punch.
:,,)
SERVICE POINTS OF REASSEMBLY9. INSTALLATION OF SPACER
/ 8. SIDE GEAR / 7.
WASHER
/ 6. PINION / 5. PINION SHAFT
(I 1 Install the spacer on the back of the side gear and theninstall the gear in the differential case.
CautionWhen installing a new side gear, use a spacer of
medium thickness
[0.93 - 1.00 mm (.036 - .04 in.)].
(2) Set the washer on the back of each pinion and insert the
two pinions to specified position while engaging themwith the side gears and turning them.
(3) Insert the pinion shaft.
(4) Measure the backlash between the side gears and
pinions.Standard value: 0.025
- 0.150 mm (.OOl - .006 in.)
(5) If the backlash is out of specification, disassemble againand using correct spacer, reassemble and adjust.
CautionAdjust for same backlash of both side gears.
4. INSTALLATION OF LOCK PIN
Align the pinion shaft lock pin hole with the case lock pin
hole and insert the lock pin.
Caution1. Do not reuse the lock pin.
2. The lock pin head must be sunk from the flange
surface of the differential case.
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MANUAL TRANSAXLE Differential Assembly / Speed-
- ometer Driven Gear Assembly22-45
TFYOO4Q
The numerals @to @ indicate
the tightening sequence.
9
SPEEDOMETER DRIVEN GEAR ASSEMBLY
DISASSEMBLY AND REASSEMBLY
3. INSTALLATION OF TAPER ROLLER BEARINGInstall the taper roller bearings on both sides of the
differential case.
CautionWhen press-fitting the bearings, push the inner race
only.
1.INSTALLATION OF BOLTS
Apply specified adhesive to the entire threads of the bolts
and quickly tighten in the order shown to specified torque.
Specified adhesive: 3M Stud Locking Part No. 4170 or
equivalent
CautionIf a bolt is reused, remove traces of oil adhesive
completely from the threads.MZ2MNAE
Disassembly steps
I. O-ringl *2. Spring pin
l *3. Speedometer driven gear4. Oil seal
5. Sleeve201078
201075
SERVICE POINTS OF REASSEMBLY3. INSTALLATION OF SPEEDOMETER DRIVEN GEAR
Apply gear oil sparingly to the speedometer driven gear
shaft and insert the shaft.
2. INSTALLATION OF SPRING PIN
Install the spring pin in such a way that its slit does not facethe gear shaft.
J
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22-48MANUAL TRANSAXLE - General Information
MANUAL TRANSAXLE
GENERAL INFORMATION~M22BAAV I\,i ~
Ist-2nd speed synchronizer assembly
Transaxle case
3rd-4th speed synchronizer assembly
Input shaft 5th speed gear
Center shaft
\Front differential
Viscous couplingCenter differentral
Reverse idler
‘gear
TFMOllO
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MANUAL TRANSAXLE - Specifications
SPECIFICATIONS
22-49
MZZCA-B
iGENERAL SPECIFICATIONS
L
Items
Model
Applicable engine
Type
Gear ratio
1 St
2nd
3rd
4th
5th
Reverse
Reduction ratio
Primary
Front differential
Transfer
Speedometer gear ratio (driven/drive)
Oil quantityliters (qts.)
Transaxle
Transfer
Specifications
W5MGl-0-FNBR
6G72-DOHC (Turbo)
5-speed transaxle floor shift
3.071
1.739
1.103
0.823
0.659
3.076
1.375
2.888
0.814
27136
2.4(2.5)
0.27(.29)
LLUBRICANTSMUCD-B
Items
Specified lubricants1 Quantity lit. (qts.)I
classification GL4 or higher
1 Transfer oil seal lip
a:
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23-1
AUTOMATIC
TRANSAXLE
CONTENTSMZJAA- _
ANNULUS GEAR AND TRANSFER DRIVE GEARTransmission Fluid Level Inspection................................46SET................................................................................................
102Transmission Fluid Replacement........................................
46
DIFFERENTIAL........................................................................104SPECIAL TOOLS........................................................................
16
:......................................... 12IEND CLUTCH ASSEMBLY....................................................99SPECIFICATIONS..........................
FRONT CLUTCH ASSEMBLY................................................95
GENERAL INFORMATlON....................................................2
KICKDOWN SERVO................................................................
107
LOW-REVERSE BRAKE............................................................
107
OIL PUMP....................................................................................93
PLANETARY GEAR................................................................
100
REAR CLUTCH ASSEMBLY....................................................97
SELECTOR LEVER ASSEMBLY............................................58
SERVICE ADJUSTMENT PROCEDURES............................46
Accelerator Switch
Inspection and Adjustment................
50Drive Shaft Oil Seals Replacement....................................
52Inhibitor Switch and Control Cable Adjustment................
52Key Interlock Mechanism Check........................................50KickdownServo Adjustment................................................
47Line Pressure Adjustment....................................................
48Reducing Pressure Adjustment........................................
49Selector Lever Operation Check........................................
50Shift Lock Mechanism Check............................................51Speedometer Cable Replacement....................................53
General Specifications........................................................12Lubricants............................................................................15Service Specifications........................................................12Spacer and Snap Ring........................................................13Valve Body Spring Identification Chart............................13
SPEEDOMETER DRIVEN GEAR ASSEMBLY....................106
TRANSAXLE ASSEMBLY........................................................62
TRANSAXLE CONTROL*........................................................54
TRANSAXLE OIL COOLER, HOSES, TUBES
....................66
TRANSFER SHAFT....................................................................92
TROUBLESHOOTING............................................................
19
A/T Safety-lock System Troubleshooting........................44Converter Stall Test............................................................
43
Diagnosis and Test
................................................................
22
Element in Use at Each Position of Selector Lever........31Inspection
of ControlSystem............................................
28Inspection of Electronic Control System Components....32Oil Pressure Tests................................................................
39ShiftPatterns....................................................................
31,42Troubleshooting Guide........................................................
20
VALVE BODY. . . .._._.................................................................... 108
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(1)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3668GT.(2)The SRS includes the following components: impact sensors, SRS diagnosis unit: SRS warning light, air bagmodule, clock spring, interconnecting wiring. Other SRS-related components (that may have to beremoved/installed in connection with SRS service or maintenance) are indicated in the table of contents byan asterisk (*).
WARNING!(1)Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead topersonal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (from
rendering the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an
authorized MITSUBISHI dealer.
(3) MlTSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B -Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of the
ISRS or any SRS-related component.

23-12AUTOMATIC TRANSAXLE - Specifications
SPECIFICATIONSGENERAL SPECIFICATIONS~
M23CA.C
Items
Model
TypeTorque converter
WeEngine stall speed
Stall torque ratioSpecifications
F4A33-I-MNN2Full automatic
4 speed transaxle
3 element with damper clutch
2,200- 3,200 rpm
1.80Transaxle
TypeGear ratio
First
Second
Third
Fourth
Reverse
Final gear ratio
Speedometer gear ratio (Drive/Driven)Electronically controlled4-speed full-automatic
2.551
1.488
1.000
0.6852.176
3.95836128
SERVICE SPECIFICATIONS
M23CB-Cmm (in.)
‘dterns
Standard value
Accelerator switch switching point
Sleeve and selector lever assembly end play
Transfer driven gear preload
Low-reverse brake end playSpecifications
2
- 6 (.079 - .24)
15.2
- 15.9 (598 - .625)0.075-0.135
(.0030- .0053)1
.O - 1.2 (.0394 - .0472)Input shaft end play
0.3
- 1 .O t.0118 - .0394)Differential case preload
0.075
- 0.135 (0030 - .0053)Differential gear and pinion backlash
0.025
- 0.150 LOOI 0 - .0059)Oil pump side clearance
0.03
- 0.05 (.0012 - .0020)Output flange bearing end play
0
- 0.09 (0 - .0035)Front clutch end play
0.8
- 1 .O (0315 - .0394)Rear clutch end play
1 .O - 1 .j (.0394- .0472)End clutch end play
0.60
- 0.851.0236 - .0335)
1 TSB Revision

23-14AUTOMATIC TRANSAXLE - SpecificationsPart name
Pressureplate
(for adjustment of low-reverse brake end play)
Spacer
(for adjustment of differential case preload)
Snap ringfor adjustment of output flange bearing end play)Thickness mm (in.)Identification
symbolPart No.
5.9
l.232)A
MD731 736
6.0
f.236)0MD731 737
6.1
i.240)1MD731738
6.2
(.244)2MD731 739
6.3
(.248)3MD731 740
6.4
(.252)4MD731 588
6.5
(.256)5MD731 741
6.6
(.260)6MD731742
6.7
(.264)7MD731 743
6.8
(.268)8MD731744
6.9
l.272)9MD731 745
0.83
(.0327)83MD720937
0.86
l.0339)86MD720938
0.89
t.0350)89MD720939
0.92
t.0362)92MD720940
0.95
f.0374)95MD720941
0.98
t.0386)98MD720942
1
.Ol f.0398)01MD720943
1.04 l.0409)04MD7209441.07
(.0421)07MD720945
I. 10 f.0433)JMD710454
1.13
f.0445)DMD700270
1.16(.0457)KMD710455
1.19
l.0469)LMD710456
1.22
(.0480)GMD700271
1.25
(.0492)MMD710457
1.28
i.0504)NMD71 0458
1.31
(.0516)EMD706574
1.34
l.0528)0MD710459
1.37
f.0539)PMD710460
1.76
t.0693)BrownMD73331 4
1.82
(.0717)NoneMD722538
1.88
i.0740)BlueMD721 014
1.94
(.0764)BrownMD721015
2.00
t.0787)NoneMD721016
2.06
(.0811)BlueMD721017
2.12
l.0835)BrownMD722539
2.18
t.0858)NoneMD73331 5
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AUTOMATIC TRANSAXLE - Specifications.23-15Part name
Thickness mm (in.)
’ Identification
symbolPart No.
Spacer
(for adjustment of differential gear and
pinion backlash)0.75
- 0.82-MD722986LO295 - .0323)0.83
- 0.92-MD722985t.0327 - .0362)0.93
- 1 .oo-MD722984LO366 - .0394)
1.01 -1.08-MD722982(.0398 - .0425)
1.09-1.16-MD7;!2983LO429 - .0457)Snap ring
(for adjustment of front clutch and rear
clutch end play)
* __. Only for rear clutch
Snap ring
(for adjustment of end clutch end play)1.3”
i.051)
1.4* (.055)1.5 (.059)
1.6 f.063)
1.7 t.067)
1.8 (.071)
1.9 (.075)
2.0
t.07912.1 f.083)
2.2
t.087)2.3
(.091)2.4
(.094)1.05
f.0413)1.30
(.0512)1.55
(.0610)1.80
(.0709)2.05
(.0807)None
Blue
Brown
None
Blue
Brown
None
Blue
Brown
None
Blue
Brown
White
Yellow
None
GreenPinkMD731 747
MD731 748
MD731 749
MD731750
MD731751
MD731 752
MD731 753
MD731 754
MD731 755
MD731756
MD731757
MD731 758
MD71 5800
MD71 5801
MD71 5802
MD71 5803
MD720849
LUBRICANTSM.23CD.BItems
1 Specified lubricants1 Quantity
Transaxle fluidliters (qts.)
Drive shaft oil seal lipDia ATF SP or MITSUBISHI PLUS
ATF or equivalent
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