Mitsubishi 380. Manual - part 475

DIFFERENTIAL

AUTOMATIC TRANSMISSION OVERHAUL

23B-60

DIFFERENTIAL

DISASSEMBLY AND REASSEMBLY

M1233003100402

AK301606

2

4

8

6

5

3

8

135 

± 5 

N·m

1

7

5

2

6

9

AE

Apply automatic

transmission fluid

to all moving parts

before installation.

Disassembly steps 

>>

D

<<

1.

Differential drive gear

<<

A

>>

>>

C

<<

2.

Taper bearing

>>

B

<<

3.

Lock pin

>>

A

<<

4.

Pinion shaft

>>

A

<<

5.

Pinion

>>

A

<<

6.

Washer

>>

A

<<

7.

Side gear

>>

A

<<

8.

Spacer

9.

Differential case

DISASSEMBLY SERVICE POINT

<<A>> TAPER ROLLER BEARING REMOVAL

AK301767AB

MD998801

1. Support the taper roller bearing with special tool 

Bearing remover (MD998801) and then set them 
on the press.

2. Push down on the differential case with the press 

to remove the bearing.

DIFFERENTIAL

AUTOMATIC TRANSMISSION OVERHAUL

23B-61

REASSEMBLY SERVICE POINTS

>>A<< SPACER/SIDE GEAR/WASHER/PINION/
PINION SHAFT INSTALLATION

AK300655

1. Mount a spacer on the back surface of the side 

gear, and then install the side gear in the 
differential case.

NOTE: When a new side gear is to be installed, 
use a medium thickness spacer (0.93 to 1.00 
mm).

2. Set the washer on the back of each pinion, and 

put both pinions simultaneously in mesh with the 
side gears. While rotating them, install them into 
position.

AK300656

3. Insert the pinion shaft.

AK300657

4. Measure the backlash between the side gear and 

pinion.

Standard value: 

 

0.025 

− 0.150 mm

5. If the backlash is out of the standard value, select 

a spacer and re-measure the backlash.

NOTE: Adjust until the backlash on both sides are 
equal.

>>B<<LOCK PIN INSTALLATION

AK301284

Pinion shaft

Differential case

Lock pin

AB

Install the lock pin so that it will be oriented in the 
direction shown.

>>C<< TAPER ROLLER BEARING INSTALLATION

AK300658 AC

MD998812

MD998820

Using special tools to press in the taper roller bear-
ing.

• Installer cap (MD998812)

• Installer adapter (MD998820)

>>D<< DIFFERENTIAL DRIVE GEAR 
INSTALLATION

AK300659

10

8

1

6

8

9

7

4

5

3

AC

Apply ATF to the bolts, and tighten the bolts to the 
specified torque of 135 

± 5 N⋅m in the shown 

sequence.

VALVE BODY

AUTOMATIC TRANSMISSION OVERHAUL

23B-62

VALVE BODY

DISASSEMBLY AND REASSEMBLY

M1233005500365

AK501912

1

7

9

13

12

10

11

5

6

14

1

2

3

4

15

20

21

22

17

16

8

18

19

AB

6.0 ± 1.0 N·m

6.0 ± 1.0 N·m

6.0 ± 1.0 N·m

11 ± 1 N·m

11 ± 1 N·m

AK501912

Apply automatic

transmission fluid

to all moving parts

before installation.

14

Disassembly steps 

1.

Solenoid valve support

<<

A

>>

>>

C

<<

2.

Underdrive solenoid valve

<<

A

>>

>>

C

<<

3.

Second solenoid valve

<<

A

>>

>>

C

<<

4.

Damper clutch control solenoid 
valve

<<

A

>>

>>

C

<<

5.

Overdrive solenoid valve

<<

A

>>

>>

C

<<

6.

Low-reverse solenoid valve

<<

A

>>

>>

C

<<

7.

Reduction solenoid valve

8.

Manual valve

9.

Cover

10. Plate (separating outside)
11. Outside valve body assembly

>>

B

<<

12. Steel ball (orifice check ball)

>>

B

<<

13. Spring
14. Knock bushing
15. Plate (separating inside)

>>

A

<<

16. Damping valve

>>

A

<<

17. Damping valve spring

>>

A

<<

18. Steel ball (line relief)

>>

A

<<

19. Spring

>>

A

<<

20. Steel ball (orifice check ball)

>>

A

<<

21. Spring
22. Inside valve body assembly

Disassembly steps ( つづき )

AK403293

25

26

23

24

27

28

29

30

34

35

33

32

31

43

39

38

36 37

40

70

41

42

44

48

52

53

54

49

45

46

50

47

51

55

58

56

57

62

61

60

59

63

64

65

66

69

67

68

AD

Apply automatic

transmission fluid

to all moving parts

before installation.

VALVE BODY

AUTOMATIC TRANSMISSION OVERHAUL

23B-63

Disassembly steps 

23. Roller
24. Damper clutch control valve sleeve
25. Damper clutch control valve
26. Damper clutch control valve spring
27. Plate
28. Screw
29. Regulator valve spring
30. Regulator valve
31. Plate
32. Fail-safe valve A sleeve
33. Fail-safe valve A2
34. Fail-safe valve A spring
35. Fail-safe valve A1
36. Plate
37. Plug
38. Torque converter valve
39. Torque converter valve spring
40. Plate
41. Fail-safe valve B sleeve
42. Fail-safe valve B
43. Inside valve body
44. Roller

45. Overdrive pressure control valve 

sleeve

46. Overdrive pressure control valve
47. Overdrive pressure control valve 

spring

48. Roller
49. Low-reverse pressure control valve 

sleeve

50. Low-reverse pressure control valve
51. Low-reverse pressure control valve 

spring

52. Roller
53. Reduction pressure control valve 

sleeve

54. Reduction pressure control valve
55. Reduction pressure control valve 

spring

56. Plate
57. Plug
58. Switch valve
59. Roller

Disassembly steps ( つづき )