Mitsubishi Montero (2004+). Manual - part 419

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-3

GENERAL INFORMATION

M1233000100425

This transmissions is the newly developed 5-speed 
automatic transmission that merges advanced elec-
tronic technology and mechanical technology.
A hydraulic balance mechanism is incorporated for 
the transmission clutch, allowing for ultra-high speed 
gear changes.

The weight has been reduced by using precision 
sheet metal pressing of the clutch retainer, etc., and 
using aluminum die cast for the oil pump housing.

SECTIONAL VIEW 

AKX00269

4

5

6

1

2

3

7

8

9

14

15

16

11

12

13

17

18

19

10

AB

1.

TORQUE CONVERTER CLUTCH

2.

TORQUE CONVERTER

3.

OIL PUMP

4.

OVERDRIVE CLUTCH

5.

REVERSE CLUTCH

6.

OVERDRIVE PLANETARY CARRIER

7.

SECOND BRAKE

8.

OUTPUT PLANETARY CARRIER

9.

LOW/REVERSE BRAKE

10.

ONE-WAY CLUTCH

11.

CENTER SUPPORT

12.

UNDERDRIVE CLUTCH

13.

OUTPUT SHAFT SUPPORT

14.

PARKING GEAR

15.

OUTPUT SHAFT

16.

ONE-WAY CLUTCH

17.

DIRECT CLUTCH

18.

VALVE BODY

19.

INPUT SHAFT

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-4

SECTIONAL VIEW 

AKX00270

4

5

6

1

2

3

7

8

9

11

12

10

AB

1.

TRANSFER INPUT GEAR

2.

H-L CLUTCH

3.

LOW SPEED GEAR

4.

2-4WD SYNCHRONIZER SLEEVE

5.

DRIVE SPROCKET

6.

CHAIN

7.

VISCOUS COUPLING

8.

CENTER DIFFERENTIAL PLANETARY CARRIER

9.

TRANSFER DRIVE SHAFT

10. REAR OUTPUT SHAFT
11.

FRONT OUTPUT SHAFT

12. TRANSFER COUNTER GEAR

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-5

HYDRAULIC CONTROL SYSTEM 

AKX00271

1

3

2

4

14

13

12

11

10

9

8

7

6

5

19

18

17

16

15

29

28

27

26

25

24

23

22

21

20

32

31

30

AB

1.

REVERSE CLUTCH

2.

LOW/REVERSE BRAKE

3.

SECOND BRAKE

4.

UNDERDRIVE CLUTCH

5.

OVERDRIVE CLUTCH

6.

TORQUE CONVERTER CLUTCH

7.

FAIL-SAFE VALVE A

8.

FAIL-SAFE VALVE B

9.

TORQUE CONVERTER CLUTCH CONTROL VALVE

10. SWITCHING VALVE
11. COOLER
12. LOW-REVERSE BRAKE PRESSURE
13. SECOND BRAKE PRESSURE CONTROL VALVE
14. UNDERDRIVE CLUTCH PRESSURE CONTROL 

VALVE

15. OVERDRIVE CLUTCH PRESSURE CONTROL 

VALVE

16. TORQUE CONVERTER CLUTCH CONTROL 

SOLENOID VALVE

17. LOW-REVERSE BRAKE SOLENOID VALVE
18. SECOND BRAKE SOLENOID VALVE
19. UNDERDRIVE CLUTCH SOLENOID VALVE
20. OVERDRIVE CLUTCH SOLENOID VALVE
21. TORQUE CONVERTER PRESSURE CONTROL 

VALVE

22. REGULATOR VALVE
23. MANUAL VALVE
24. OIL FILTER
25. OIL PAN
26. OIL PUMP
27. OIL STRAINER
28. REDUCTION BRAKE
29. DIRECT CLUTCH
30. FAIL-SAFE VALVE C
31. REDUCTION BRAKE PRESSURE CONTROL VALVE
32. REDUCTION BRAKE SOLENOID VALVE

SPECIAL TOOLS

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-6

SPECIAL TOOLS

M1233000600323

TRANSMISSION

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB990929
Installer adapter

MB990929

Installation of oil seal 

MB990938
Handle

MB990938-01

Use with installer adapter

MD998727
Oil pan remover

−

Removal of oil pan

MD998333
Oil pump remover

MD998333-01

Removal of oil pump

MB991693 
Reduction brake stopper

−

Adjustment reduction 
brake piston

MB991633 
Reduction brake wrench 
set

−

Adjustment reduction 
brake piston

MB991603
Bearing installer stopper

−

Measurement of output 
shaft and center support 
end plays

B990938

D998727