manual transmission MITSUBISHI 3000GT 1991 Service Manual

GENERAL - How to Use This Manual
EXPLANATION OF MANUAL CONTENTS
Indicates procedures to be per-formed before the work in thatsection is started, and procedures tobe performed after the work in thatsection is finished.
Maintenance and Servicing Procedures0 Removal steps:
(1) A diagram of the component parts is providedThe part designation number corresponds to the
near the front of each section in order to give thenumber in the illustration to indicate removal
reader a better understanding of the installedsteps.
condition of component parts.l Disassembly steps:
(2)The numbers provided within the diagram indicateThe part designation number corresponds to the
the sequence for maintenance and servicingnumber in the illustration to indicate disassembly
procedures; the symbol m indicates a non- . ln~~~~iion steps:reusable part; the tightening torque is providedwhere applicable.Specified in case installation is impossible inreverse order of removal steps.Omitted if installation is,possible in reverse orderof removal steps.l Reassembly steps:Specified in case reassembly is impossible inreverse order of disassembly steps. Omitted ifreassembly is possible in reverse order of dis-assembly steps.
Classifications of Major Maintenance/Service Points
When there’are major points relative to maintenance andservicing procedures (such as essential maintenance andservice points, maintenance and service standard values,informatton regarding the use of special toois, etc.), these arearranged together as major maintenance and service points andexplained in detail.
**:lndicates that there are essential points for removal ordisassembly.*+: Indicates that there are essential points for installation orreassembly.Symbols for Lubrication, Sealants and Adhesives
Information concerning the locations for lubricationand for application of sealants and adhesives isG&:
provided, by using symbols, in the diagram of compo-nent parts or on the page following the componentparts page, and explained.4:
Indicates (by symbols) where lubri-cation is necessary. In this example,
Grease(Multipurpose grease unless there is a brandor type specified)
Sealant or adhesive
Brake fluid, automatic transmission fluid or aconditioner compressor oil
Engine oil or gear oil
Adhesive tape or butyl rubber tape
TSB Revision

22-1
iv,MANUAL ~
TRANSAXLE
~
I
CONTENTSM22AA. -
MANUAL TRANSAXLE . . . . . . . . . . . .._...48INPUT SHAFT ASSEMBLY_..________.............: . . . . . . . . . . . . . . . . . . . . . . . . . .30
GENERAL INFORMATION....................................................48
SERVICE ADJUSTMENT PROCEDURES
............................51
Drive Shaft OilSealsReplacement....................................
52Speedometer Cable Replacement....................................
53Transfer Oil Seal Replacement............................................53Transmission Oil Level Inspection....................................51Transmission Oil Replacement............................................51
SHIFT LEVER ASSEMBLY....................................................
53
SPECIAL TOOLS........................................................................50
SPECIFICATIONS
....................................................................49
General Specifications........................................................49Lubricants............................................................................49
TRANSAXLE ASSEMBLY....................................................56,60
TRANSAXLE CONTROL*........................................................54
TRANSFER ASSEMBLY
........................................................59
MANUAL TRANSAXLE ....................2
CLUTCH HOUSING ASSEMBLY............................................46
DIFFERENTIAL ASSEMBLY
....................................................43
5TH SPEED SYNCHRONIZER ASSEMBLY
........................28
GENERAL INFORMATION
....................................................2INTERMEDIATE GEAR ASSEMBLY
....................................
OUTPUT SHAFT ASSEMBLY................................................
SERVICE ADJUSTMENT PROCEDURES............................
Drive Shaft Oil Seals Replacement....................................Speedometer CableReplacement....................................Transmission Oil Level Inspection....................................Transmisston Oil Replacement............................................
SHIFT LEVER ASSEMBLY....................................................
SHIFT RAILS AND FORKS....................................................
SPECIAL TOOLS........................................................................
SPECIFICATIONS....................................................................
General Specifications........................................................
Lubricants............................................................................
Sealants and Adhesives........................................................Service Specifications........................................................
Snap Ring (for Adjustment) and Spacer............................
SPEEDOMETER DRIVEN GEAR ASSEMBLY....................
TRANSAXLE ASSEMBLY _____...._........__....................................
TRANSAXLE CONTROL*. . ..________.___.._ ..__._.__.__...............
36
41
9
10
9
9
9
13
42
6
3z
63
3
45
14
11TROUBLESHOOTING
___.._______._____.......,..................................8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(1)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3000GT.(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 be
removed/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 to
personal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (fromrendering 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) MITSUBISHI 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 theSRS or any SRS-related component.

22-6MANUAL TRANSAXLE - Specifications / Special Tools
LUBRICANTS
M22CD-A
Items
Manual transmission oil
Drive shaft oil seal lip
Specified lubricant
Hypoid gear oil, SAE
75W-90 or75W-85W conforming to APIclassification GL-4 or higherQuantity lit.
(qts)
2.3 (2.4)
As required
SEALANTS AND ADHESIVES
Items
Transaxle case - clutch housing mating surfaces
Transaxle case
- rear cover mating surfaces
Differential drive gear bolts
Bearing retainer screw (flush head screw)
Reverse brake cone mounting screw bolts
MUCE- _
Specified sealants and adhesives
Mitsubishi genuine part No. 997740 or equivalent
3M Stud Locking part No. 4170 or equivalent
Air breather
3M ATD part No. 8001 or equivalent
SPECIAL TOOLSM22DA-A.
nstallation of spring pin and lock
MD998323-01TSB Revision

MANUAL TRANSAXLE - Service Adiustment Procedures22-9
110*u011009FO12
SERVICE ADJUSTMENT PROCEDURES
MZZFBAEl
TRANSMISSION OIL LEVEL INSPECTIONRefer to GROUP 00
- Maintenance Service.
TRANSMISSION OIL REPLACEMENTM22FCAI(1) Position vehicle on a flat level.
(2) Remove filler and drain plugs and allow the transmission oil
to drain.
(3) Refill the transaxle to the proper level with specified
transmission oil. The oil level should be the bottom of the oil
filler hole.
Transmission oil: Hypoid gear oil, SAE 75W-85W con-
forming to API classification GL-4 or
higherC2.3 liters (2.4 pts.)]
SPEEDOMETER CABLE REPLACEMENTMUFEALl
1.Correctly insert the adapter into the instrument panel, and
fasten the new speedometer cable.
2.Install the grommet so that, as shown in the illustration, the
cable attachment part and the projecting part are horizontal.
CautionThe cable arrangement should be made so that the
radius of cable bends is 150 mm (5.9 in.) or more.
3.At the transaxle end of the speedometer cable, the key joint
should be inserted into the transaxle, and the nut should be
securely tightened.
Caution
If the cable is not correctly and securely connected, it
may cause incorrect indication. by the speedometer, orabnormal noise. Be sure to connect it correctly.
DSB RevisionI

22-10 MANUAL TRANSAXLE - Service Adjustment ProceduresI
I09K5671160024
Oil seallip
* Transaxleside2200037
DRIVE SHAFT OIL SEALS REPLACEMENTM2ZFDAI
(I) Disconnect the drive shaft from the transaxle.
(Refer to GROUP 26
- Drive Shaft.)’ )
(2) Using a flat-tip (-) screwdriver, remove the oil seal.d,(3) Using the special tool, tap the drive shaft oil seal into the
transaxle.
The drive shaft oil seal must be installed in the direction
shown.
(4) Apply a coating of the transmission oil to the lip of the oil
seal.
Transmission oil: Hypoid gear oil, SAE 75W-90 or
75W-85W conforming to API classi-
fication GL-4 or higher
‘d
TSB Revision

MANUAL TRANSAXLE - Transaxle Assembly22-15
idPost-installation Operationl Installation of Front Under Cover(Referto GROUP 51 -Front Bumper.)l Supplying of Transmission Oil (Refer to P.22-9.)l Filling of Engine Coolant (Refer to GROUP 14-
Service Adjustment Procedures.)70 Nm
l Checking Operation of Shift Lever at Each Positionl Checking the Operation of the Meters and Gauges26
ft.lbs.09FOO84
4*9. Connection for transaxle mount16. Starter10. Transaxle mount bracket4*17. Drive shaft (Left side),
l * 11. Mounting stopperinner shaft assembly12. Transaxle assembly upper part+* ** 18. Drive shaft (Right side)
coupling bolt19. Transaxle stay (Front bank side)4*13. Connection for tie rod end20. Transaxle stay (Rear bank side)4*14. Connection for lower arm4*21. Transaxle assembly lower part
ball jointcoupling bolt15. Right member4*22. Transaxle assembly
SERVICE POINTS OF REMOVALMZZMBBA6. DISCONNECTION OF THE CLUTCH TUBE BRACKET
AND CLUTCH DAMPER ASSEMBLY
Remove the clutch release cylinder and clutch oil line
bracket installation bolt, and then secure at the body side
without disconnecting the oil line coupling.
1 TSB Revision

MANUAL TRANSAXLE - Service Adjustment Procedures22-51SERVICE ADJUSTMENT PROCEDURES
TRANSMISSION OIL LEVEL INSPECTIONM22FBAE2
Refer to GROUP 00
- Maintenance Service.
TRANSMISSION OIL REPLACEiVlENTMUFCAJ
(I) Position vehicle on a flat level and remove filler and drainplugs to drain transmission oil.
(2) Pour in fresh transmission oil through filler port.
Transmission oil: Hypoid gear oil, SAE 75W-85W con-
forming to API classification GL-4 or
higherTransaxle: 2.4 liters (2.5 qts.)
Transfer: 0.27 liters
(.29 qts.)
(3) After checking to be sure that the oil level is the specifiedlevel, tighten the filler plug at the specified torque.
1 TSB Revision

22-52 MANUAL TRANSAXLE - Service Adjustment Procedures
DRIVE SHAFT OIL SEALS REPLACEMENTMZZFDAJ)(I) Disconnect the drive shaft from the transaxle.
(Refer to GROUP 26
- Drive Shaft.)
(2) Remove the transfer assembly.ij(3) Using a flat-tip
(-) screwdriver, remove the oil seal.
L.H. side\
For L.H.
Dust seal.
For R.H.(4) Install the oil seals using the following procedure:Using the special tool, tap the oil seal into the transaxle.
Note that there are two types of oil seals, one for R.H. and
the other for L.H., and the shape of each type is different,
as shown.
(5) Drive shaft
011 seal must be installed in the direction shown.(6)
$4~1~ a coatrng of the transmission oil to the lip of the oil
Transmission oil: Hypoid gear oil, SAE
75W-90 or
75W-85W conforming to API classi-fication GL-4 or higher
wision

MANUAL TRANSAXLE -Service Adjustment Procedures / Shift Lever Assembly22-53
Front exhaust p6eU.09FOO64
& MD998304-01
LJ -3 ‘=-----XL I
TRANSFER OIL SEAL REPLACEMENTMUFGAH
(1) Pull out the propeller shaft from the transfer. (Refer to
GROUP 25 - Propeller Shaft.)
(2) Using a flat-tip (-) screwdriver, remove the oil seal.
(3) Using the special tool, tap the drive shaft oil seal into the
transfer.
(4) Apply a coating of the transmission oil to the lip of the oil
seal.Transmission oil: Hypoid gear oil, SAE
75W-90 or
75W-85W conforming to API classi-.
fication GL-4 or higher
SPEEDOMETER CABLE REPLACEMENTMZ2FEAH
Refer to
P.22-9.
SHIFT LEVER ASSEMBLYRefer to
P.22-13.M22GE-B
TSB Revision

22-56
MANUAL TRANSAXLE - Transaxle Assembly
TRANSAXLE ASSEMBLY
REMOVAL AND INSTALLATION
Hose clamp4.0 Nm
Removal steps
Post-installation Operationl Installation of Transfer Assembly
(Refer to P.22-59.)l Supplying of Transmission Oil
(Refer to P.2351,)l Checking Operation of Shift Leverat Each Positionl Checking the Operation of Meters andGauges
MUMA-B~
19 Nm
13 f;t.lbs.
OSFOllO
1. Side under coverl *2. Air hose Al 43. Air cleaner cover, Air intake hose AI)* 4. Vacuum pipe5. Air cleaner element
6. Air cleaner body7. Battery
8. Battery seat, Washer tank
9. Connection for transaxle control cable
TSB Revision