Mitsubishi Galant (2004+). Manual - part 1639

TRANSAXLE

TSB Revision

AUTOMATIC TRANSAXLE OVERHAUL

23B-45

CAUTION

Be sure to install the thrust bearing in the correct direction 
as shown.
42.Check the installation direction of the thrust bearing number 

5, and install it on the hub of the planetary reverse sun gear.

CAUTION

Use care to install the thrust bearing in the proper direc-
tion.
43.Attach thrust bearing number 6 to the inside of the overdrive 

clutch hub using petroleum jelly (Vaseline). Then install the 
assembly in the reverse and overdrive clutch.

44.Install the reverse and overdrive clutch.

CAUTION

Be sure to install the thrust bearing in the correct direction 
as shown.
45.Check the installation direction of thrust bearing number 7, 

and install it on the reverse clutch retainer.

46.Use special tool MB990938 to tap the input shaft rear 

bearing in the rear cover.

47.Install the seal rings (four pieces) in the grooves of the rear 

cover.

AK301100AD

INSTALL WITH
THIS SIDE
DOWN

AK300509AC

THRUST BEARING
NO. 6

AK301224AD

THRUST
BEARING
NO.7

INSTALLATION 
DIRECTION

AK300511AD

MB990938

TRANSAXLE

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AUTOMATIC TRANSAXLE OVERHAUL

23B-46

48.Measure the end play of the under drive sun gear by the 

following procedures:

(1) Install the thinnest thrust race number 8 [thickness 1.6 

mm (0.063 inch); part number MD707267] on thrust 
bearing number 7.

(2) Install the rear cover on the transaxle case and tighten 

the bolts to the specified torque.

Tightening torque: 23 

± 3 N⋅m (17 ± 2 ft-lb)

(3) Turn over the transaxle case so that the installation 

surface of the torque converter housing is facing up.

(4) Install the under drive clutch hub on the under drive sun 

gear.

(5) Measure end play of the underdrive sun gear and record 

the measurement value.

Standard value (Reference):
0.25 

− 0.45 mm (0.0098 − 0.0177 inch)

(6) After taking the measurement in steps (5), take out the 

installed parts in steps (1) through (4). 

49.Install the O-rings (three pieces).
50.Select a thrust race number 8 whose thickness corresponds 

to the measured values taken in step 47 from the table 
below. Install it on thrust bearing number 7.

51.Apply a 2 mm (0.08 inch) diameter bead of sealant 

(MITSUBISHI Genuine Part number MD974421 or 
equivalent) to the illustrated position of the rear cover.
NOTE: Be sure to install the case quickly while the sealant is 
wet (within 15 minutes). Leaks will occur if the rear cover is 
installed after the sealant dries. 

AK300512AD

UNDERDRIVE CLUTCH HUB

MEASUREMENT VALUE
mm (in)

THICKNESS
mm (in)

0.3 

− 0.4 (0.012 − 0.016)

1.6 (0.063)

0.4 

− 0.5 (0.016 − 0.020)

1.7 (0.067)

0.5 

− 0.6 (0.020 − 0.024)

1.8 (0.071)

0.6 

− 0.7 (0.024 − 0.028)

1.9 (0.075)

0.7 

− 0.8 (0.028 − 0.031)

2.0 (0.079)

0.8 

− 0.9 (0.031 − 0.035)

2.1 (0.083)

0.9 

− 1.0 (0.035 − 0.039)

2.2 (0.087)

1.0 

− 1.1 (0.039 − 0.043)

2.3 (0.091)

1.1 

− 1.2 (0.043 − 0.047)

2.4 (0.094)

1.2 

− 1.3 (0.047 − 0.051)

2.5 (0.098)

1.3 

− 1.4 (0.051 − 0.055)

2.6 (0.102)

AK300464

AK301245AC

TRANSAXLE

TSB Revision

AUTOMATIC TRANSAXLE OVERHAUL

23B-47

52.Install the rear cover, and tighten its mounting bolts to the 

specified torque.

Tightening torque: 23 

± 3 N⋅m (17 ± 2 ft-lb)

NOTE: After installation, keep the sealed area away from 
ATF for approximately one hour.

53.Install the parking pawl, spacer, and spring. Then insert the 

parking pawl shaft.

54.Install the parking roller support, and then insert the parking 

roller support shafts (two pieces).

55.Install the underdrive clutch hub to the underdrive sun gear.

AK300463

AK300513

AK300514

AK300240

TRANSAXLE

TSB Revision

AUTOMATIC TRANSAXLE OVERHAUL

23B-48

CAUTION

Be sure to install the thrust bearing in the correct direction 
as shown.
56.Check the installation direction of thrust bearing number 2, 

and install it on the underdrive clutch hub.

57.Hold the input shaft, and install the underdrive clutch.

58.Place two beads of solder [each 10 mm (0.39 inch) in 

length, 3.5 mm (0.14 inch) in diameter] on the underdrive 
clutch retainer as shown in the illustration.

59.Install special tool MD998412 as shown.
60.Install the oil pump to the transaxle case.

NOTE: Do not install the oil pump gasket at this time.

61.Tighten the six oil pump mounting bolts to the specified 

torque.

Tightening torque: 29 

± 2 N⋅m (21 ± 1 ft-lb)

62.Remove the oil pump mounting bolts.

AK301246AD

INSTALL WITH THIS
SIDE DOWN

AK300238

AK301756

INPUT SHAFT

TWO BEADS
OF SOLDER

UNDERDRIVE
CLUTCH RETAINER

AB

AK301247AD

MD998412