Mitsubishi Galant (2004+). Manual - part 1635

TRANSAXLE

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AUTOMATIC TRANSAXLE OVERHAUL

23B-29

56.Remove the cap by inserting a screw driver into the center 

of the cap and prying it up.

57.Using a chisel, straighten the staked portions from the 

output shaft jam nut.

CAUTION

The jam nut is reverse threaded.
58.Use special tools MB991625 and MB990607 to remove the 

output shaft jam nut.

59.Remove the bearing retainer mounting bolts.

AK300482

AK300483

AK300484AD

MB991625

MB990607

AK300485

TRANSAXLE

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AUTOMATIC TRANSAXLE OVERHAUL

23B-30

60.Tap on the rear end of the output shaft to remove the output 

shaft, taper roller bearing and collar.

61.Tap out the outer race and the spacer.
62.Remove the snap ring.
63.Remove the differential bearing outer race from the 

transaxle case.

ASSEMBLY

CAUTION

• Do not reuse the gasket, O-ring, oil seal. Always 

replace with a new one when assembling.

• Do not use grease. Use petroleum jelly (i.e. Vaseline).
• Apply ATF to friction components, rotating parts, and 

sliding parts before installation. Immerse new clutch 
discs or brake discs in ATF for at least two hours 
before assembling them.

• When replacing a bushing, replace the assembly which 

it belongs to.

• Do not use cloth gloves or shop towels during assem-

bly. Use nylon cloth or other lint-free material.

1. Install special tool MD998412 in the installation screw hole 

of the transfer drive gear bearing located in the transaxle 
case. Using this as a guide, install the transfer drive gear 
bearing and gear in the transaxle case.

AK300486

AK300487

AK301090AE

MD998412

TRANSAXLE

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AUTOMATIC TRANSAXLE OVERHAUL

23B-31

2. Tighten the mounting bolts of the transfer drive gear bearing 

to the specified torque.
F4A4B: seven mounting bolts
F4A5A: eight mounting bolts

Tightening torque:

34 

± 2 N⋅m (25 ± 1 ft-lb) 

3. Install the low-reverse brake piston, return spring, and 

spring retainer into the transaxle case.

4. Fit a new O-ring into the groove of one-way clutch inner 

race.

AK300489

AK301620 AB

LOW-REVERSE BRAKE PISTON

RETURN SPRING

SPRING RETAINER

AK301748

ONE-WAY CLUTCH INNER RACE

O-RING

AB

TRANSAXLE

TSB Revision

AUTOMATIC TRANSAXLE OVERHAUL

23B-32

5. Check the placement of the identification notches in the 

one-way clutch inner race. Install the one-way clutch inner 
race to the transfer drive gear bearing so that the notches 
fall along the A 

− A line.

6. Put the snap ring on the inner race.
7. Set special tools MD998903 <F4A4B> or MD998338 

<F4A5A> and MD998924 as shown, and then compress the 
one-way clutch inner race and install the snap ring.

AK301091

TRANSMISSION
CASE

IDENTIFICATION
NOTCHES

AC

A

A

AK300478AE

MD998924

MD998903

<F4A4B>

AK202273AC

MD998924

MD998338

<F4A5A>