transmission MITSUBISHI LANCER EVOLUTION VI 1999 User Guide

MANUAL TRANSMISSION OVERHAUL – Transmission22B-4
TRANSMISSION
DISASSEMBLY AND REASSEMBLY
1 2 34 5
6
78
910
11
18 Nm
69 Nm69 Nm 18 Nm
69 Nm
3.9 Nm32 Nm32 Nm
3
Disassembly steps
1. Transfer
J2. O-ring
3. Roll stopper bracket
4. Insulator washer
(EVOLUTION-IV only)
5. Shift cable bracketI6. Select lever
H7. Speedometer gear
8. Back-up lamp switch
9. Gasket
10. Plug
11. Gasket
NOTE:
For each service point, refer to Basic Manual. (Pub. No. S9806CNCP9)

MANUAL TRANSMISSION OVERHAUL – Clutch Housing22B-5
CLUTCH HOUSING
DISASSEMBLY AND REASSEMBLY
4
2
1
3
8 6 7
5*
9.8 Nm
Disassembly steps
1. Clutch release bearing retainer
E2. Oil seal
AD3. Outer race
BC4. Outer raceB5. Bushing*
A6. Cover-A
A7. Cover-B
8. Clutch housing
NOTE:
(1)*: Never remove the bushings from the clutch housing.
Only the case when installing new bushings into a new clutch housing, refer to B.
(2) For each service point, refer to Basic Manual. (Pub. No. S9806CNCP9)

MANUAL TRANSMISSION OVERHAUL – Reverse Idler Gear22B-6
REVERSE IDLER GEAR
DISASSEMBLY AND REASSEMBLY
Apply gear oil to all
moving parts before
installation.
5
4321
6
7
Disassembly steps
1. Snap ring
2. Cone spring
(except EVOLUTION-IV)
3. Thrust washer
4. Steel ball
(except EVOLUTION-IV)
5. Reverse idler gear
6. Needle roller bearing
7. Reverse idler gear shaft
INSPECTION
NEEDLE ROLLER BEARING
(1) Check to ensure that when the shaft and gear are combined
and made to rotate, they rotate smoothly without looseness
and noise.
(2) Check to ensure that the cage is not deformed.

REAR AXLE – On-vehicle Service REAR AXLE – On-vehicle Service 27-34
BLEEDING
1. Lift up the vehicle.
2. Connect the MUT-II to the 16-pin diagnosis connector.
Caution
Before connecting or disconnecting the MUT-II,
always turn off the ignition switch.
3. Turn on the ignition switch.
4. Operate the MUT-II (Item No.10) to activate the hydraulic
unit forcibly.
NOTE
(1) The forced activation (air bleeding mode) will be
automatically canceled after 5 minutes operation. It
can also be canceled forcibly by operating the clear
key on the MUT-II.
(2) While this function is being disabled by the fail-safe
function, the forced activation of the hydraulic unit
can not be executed.
5. Remove the cap of the left bleeder screw on the torque
transfer differential and connect a vinyl hose.
6. Gradually turn the steering wheel clockwise from the
straight-ahead position. At this time, loosen the left bleeder
screw and check that fluid is discharged with air.
7. After air has been completely discharged, tighten the
bleeder screw.
Caution
While the system is being bled of air, add fluid as
necessary to ensure that it is left in the oil reservoir
during the entire procedure.
8. Repeat steps (6) and (7) two to three times until no air
bubbles are recognized in the fluid that comes out. Then,
tighten the bleeder screw to the specified torque.
Tightening torque: 9 Nm
9. Perform steps (5) through (8) for the right bleeder screw.
Note, however, that the steering wheel should be turned
counterclockwise.
10. After the system has been completely bled of air, check
for the fluid level. (Refer to P.27-33.)
Caution
If the system is not completely bled of air, the hydraulic
unit could generate noise, degrading pump durability.
AYC OPERATION CHECK
1. Lift up the vehicle.
2. Connect the MUT-II to the 16-pin diagnosis connector.
Caution
Before connecting or disconnecting the MUT-II, always
turn off the ignition switch.
3. Start the engine.
4. Operate the MUT-II with the transmission in 2nd or a
higher gear and check to ensure that the vehicle speed
is higher than 10 km/h using the Data List (Item 10).
Bleeder
screws Vinyl hose

REAR AXLE – On-vehicle Service 27-35
NOTE
(1) Hold the steering wheel in the neutral position.
(2) If the steering wheel is turned, it may happen that
the AYC system continues to operate (operation
sounds are heard from the torque transfer differential).
However, it does not mean a system failure. If such
a case is encountered, perform the following
operations with the steering wheel in the neutral
position to cancel the AYC function.

Disengage the clutch.

Set the transmission to neutral.

Stop the engine.
5. Operate the MUT-II (Item Nos.13 and 14) to activate
the torque transfer differential.
NOTE
(1) The forced activation (clutch operation mode) will be
automatically canceled after 1 minute operation.
It can also be canceled forcibly by operating the clear
key on the MUT-II.
(2) While this function is being disabled by the fail-safe
function, the forced activation of the torque transfer
differential can not be executed.
6. Operate the MUT-II to confirm that the several speeds
of the wheels are as shown below, using the Data List
(Item Nos.07 and 08).

The speed of left rear wheel is more than 2 km/h
higher than that of right rear wheel.

The speed of right rear wheel is more than 2 km/h
higher than that of left rear wheel.
NOTE
If the above requirements are not satisfied, the system
is probably failed. Check the hydraulic pressure.
HYDRAULIC PRESSURE CHECK
1. Lift up the vehicle.
2. Connect the MUT-II to the 16-pin diagnosis connector.
Caution
Before connecting or disconnecting the MUT-II,
always turn off the ignition switch.
3. Turn on the ignition switch.
4. Disconnect the joint between the hydraulic unit and the
hydraulic unit hose assembly. Connect the special tool
to the L port. To the R port, attach a blind plug or connect
the L port of the removed hydraulic unit hose assembly.
5. Operate the MUT-II (Item No.13) to activate the hydraulic
unit.
NOTE
(1) The forced activation (clutch left side operation check
mode) will be automatically canceled after 1 minute
operation.
It can also be canceled forcibly by operating the clear
key on the MUT-II.
MB991705
MD998330

STEERING – Power Steering Gear Box37A-9
Lubrication and Sealing Points
Fluid:
Automatic
transmission
fluid DEXRON
or DEXRON II
Grease: Repair kit grease
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II
Grease: Repair kit grease
Sealant:
3M ATD Part No. 8661 or
equivalent
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II
Grease: Silicone grease
Fluid:
Automatic transmission fluid
DEXRON or DEXRON II

STEERING – Power Steering Gear Box37A-13
2. Cover rack serrations with special tool.
3. Apply the specified fluid on the special tool.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
4. Match the oil seal centre with rack to prevent retainer
spring from slipping and slowly insert rack from power
cylinder side.
EOIL SEAL / RACK BUSHING INSTALLATION
1. Apply the specified fluid to the outer surface of the oil
seal. Press-fit the oil seal using the special tool until it
is flush with the bushing end face.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
2. Apply the specified fluid to the oil seal inner surface and
the O-ring.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
3. Wrap the rack end with plastic tape, and push the rack
bushing onto the rack.
FCIRCLIP INSTALLATION
Insert the circlip to the rack stopper hole through the cylinder
hole. Turn the rack stopper clockwise and insert the circlip
firmly.
Caution
Insert the circlip to the rack stopper hole while turning
the rack stopper clockwise.
GOIL SEAL / BALL BEARING INSTALLATION
1. Apply a coating of the specified fluid to the outside of
the oil seal. Using the special tools, press the oil seal
into the valve housing.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
MB991214
Oil seal
Oil seal
MB990927
Rack
bushingO-ring
Rack bushingPlastic tape
Circlip
SlotCirclip
Slot
Oil sealMB990938
MB991203

STEERING – Power Steering Gear Box37A-14
2. Apply a coating of the specified fluid to the outside of
the ball bearing. Using the special tools, press the ball
bearing into the valve housing.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
HSEAL RING INSTALLATION
1. Kneed the seal ring to soften it.
2. Apply the specified fluid to the seal ring, and install to
the rack groove.
Specified fluid:
Automatic transmission fluid
DEXRON or DEXRON II
3. Insert the tapered side of the special tool from the pinion
gear side, and compress the seal ring.
IOIL SEAL INSTALLATION
Use the special tool to press the oil seal into the valve housing.
The upper surface of the oil seal should project outwards
approx. 1 mm from the housing edge surface.
Caution
If the oil seal is flush with or lower than the housing
edge, it will cause oil leaks and require reassembly.
JEND PLUG INSTALLATION
1. Apply the specified sealant to the threaded part of the
end plug.
Specified sealant:
3M ATD Part No.8661 or equivalent
2. Secure the threaded portion of the end plug at two places
by using a punch.
KTOTAL PINION TORQUE ADJUSTMENT
1. Position the rack at its centre. Tighten the rack support
cover to 15 Nm.
2. In neutral position, rotate the pinion shaft clockwise one
turn/4 – 6 seconds with the special tool. Return the rack
support cover 30 – 60 and adjust torque to the standard
value.
Ball bearingMB990938
MB991203
Pinion gearMB991317
Tapered side
Approx. 1 mmMB990941
End plug
SealantEnd plug
MB991006