Mitsubishi 380. Manual - part 468

Symbol

O.D. mm

I.D. mm

Thickness 
mm

Symbol

O.D. mm

I.D. mm

Thickness 
mm

# 1

59

47

1.8

# 8

48.9

37

1.8

59

47

2.0

48.9

37

1.9

59

47

2.2

48.9

37

2.0

59

47

2.4

48.9

37

2.1

59

47

2.6

48.9

37

2.2

59

47

2.8

48.9

37

2.3

# 2

49

34

3.6

48.9

37

2.4

# 3

57

38.5

4.1

48.9

37

2.5

# 4

55.4

38.5

3.3

48.9

37

2.6

# 5

57

38.5

4.1

# 9

80

60

2.5

# 6

57

38.5

4.1

# 10

80

60

2.5

# 7

59

37

2.8

# 11

55.4

38.5

3.3

# 8

48.9

37

1.6

# 12

54.6

43

3.0

48.9

37

1.7

AK301100AB

Install with 

this side down

TRANSMISSION

AUTOMATIC TRANSMISSION OVERHAUL

23B-32

CAUTION

Be sure to install the thrust bearing in the correct 
direction as shown.

35.Check the installation direction of the thrust 

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

AK403613AC

Thrust bearing #6

CAUTION

Use care to install the thrust bearing in the 
proper direction.
36.Attach thrust bearing #6 to the inside of the 

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

AK301224

Install with 

this side down

AB

37.Install the reverse and overdrive clutch.

CAUTION

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

#7, and install it on the reverse clutch retainer.

AK300511AD

MB990938

TRANSMISSION

AUTOMATIC TRANSMISSION OVERHAUL

23B-33

39.Use special tool Handle (MB990938) to tap the 

input shaft rear bearing in the rear cover.

40.Install the seal rings (four pieces) in the grooves 

of the rear cover.

AK300512AC

Underdrive clutch hub

41.Measure the end play of the under drive sun gear 

by the following procedures:
(1) Install the thinnest thrust race #8 (thickness 

1.6 mm) on thrust bearing #7.

(2) Install the rear cover on the transmission case 

and tighten the bolts to the specified torque of 
23 

± 3 N⋅m.

(3) Turn over the transmission 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

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

take out the installed parts in steps (1) through 
(4). 

AK202120

42.Install the O-rings (six pieces).

43.Select a thrust race #8 whose thickness 

corresponds to the measured values taken in step 
40 from the table below. Install it on thrust bearing 
#7.

Measurement mm

Thickness mm

0.3 

− 0.4

1.6

0.4 

− 0.5

1.7

0.5 

− 0.6

1.8

0.6 

− 0.7

1.9

0.7 

− 0.8

2.0

0.8 

− 0.9 

2.1

0.9 

− 1.0

2.2

1.0 

− 1.1

2.3

1.1 

− 1.2

2.4

1.2 

− 1.3

2.5

1.3 

− 1.4

2.6

AK202161

44.Apply a 2 mm diameter bead of from-in-place 

gasket (FIGP) to the illustrated position of the rear 
cover.

Specified sealant: Mitsubishi genuine seal-
ant Part No. MD974421 or equivalent

AK202119

TRANSMISSION

AUTOMATIC TRANSMISSION OVERHAUL

23B-34

45.Install the rear cover, and tighten its mounting 

bolts to the specified torque of 23 

± 3 N⋅m.

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

AK202162AB

Thrust

bearing #11

Install 

with this 

side down.

Thrust race #12

CAUTION

Install the thrust bearing with the indicated side 
facing down.

46.Install the thrust race #12 and thrust bearing #11.

AK202163

47.Finger-tighten the anchor plug and a new O-ring, 

then install the reduction brake band and direct 
clutch simultaneously.

AK202148

48.Make sure that the direct clutch can be rotated 

only in the direction indicated in the illustration.

NOTE: If the clutch can be rotated in the other 
direction, remove and reinstall it correctly.

AK202115AB

Anchor plug

49.Tighten the anchor plug to the specified torque of 

98 

± 15 N⋅m.

AK202113

50.Install the direct planetary carrier assembly.

AK202164

TRANSMISSION

AUTOMATIC TRANSMISSION OVERHAUL

23B-35

51.Install the reduction brake spring and piston in 

position in the transmission case, then install the 
snap ring.

AK202165AB

MB991633 (Stopper)

52.Adjust the reduction brake piston using the 

following procedure:
(1) Remove the nut from the reduction brake 

piston.

(2) Install the stopper of the special tool 

Reduction brake set (MB991633) to hold the 
reduction brake piston against rotation.

AK202166AB

MB991633 (Socket)

(3) Using a torque wrench fitted with the socket of 

the special tool Reduction brake set 
(MB991633), tighten the adjusting rod to 10 
N

⋅m, then loosen it. Repeat this operation 

twice. Tighten the adjusting rod to 5 N

⋅m, then 

turn it back 5-1/2 to 5-3/4 turns.

AK202167AB

MB991633

(Socket)

MB991633

(Wrench)

(4) Install the nut on the adjusting rod and tighten 

the nut to 19 

± 3 N⋅m using the wrench of the 

special tool.

AK202112

53.Install the reduction brake piston cover and snap 

ring.

AK300513

54.Install the parking pawl, spacer, and spring. Then 

insert the parking pawl shaft.

AK300514

55.Install the parking roller support, and then insert 

the parking roller support shafts (two pieces).

AK300240

56.Install the underdrive clutch hub to the underdrive 

sun gear.