Mitsubishi Montero Sport (2004+). Manual - part 375

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-3

GENERAL INFORMATION

M1233000100179

This transmissions is the newly developed 4-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 <R4A51>

AKX00002

1

2

3

4

5

6

7

8

9

10

11

13

14

15

16

17

12

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.

VALVE BODY

17.

INPUT SHAFT

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-4

SECTIONAL VIEW <V4A51>

AKX00268

4

5

6

1

2

3

7

8

9

14

15

16

11

12

13

17

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.

VALVE BODY

17.

INPUT SHAFT

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-5

SECTIONAL VIEW<TRANSFER-V4A51>

AK101095

1

2

3

4

5

6

7

8

9

AB

1.

TRANSFER INPUT GEAR

2.

H-L CLUTCH

3.

LOW SPEED GEAR

4.

2-4WD SYNCHRONIZER SLEEVE

5.

DRIVE SPROCKET

6.

CHAIN

7.

REAR OUTPUT SHAFT

8.

FRONT OUTPUT SHAFT

9.

TRANSFER COUNTER GEAR

GENERAL INFORMATION

TSB Revision

AUTOMATIC TRANSMISSION OVERHAUL

23B-6

HYDRAULIC CONTROL SYSTEM

A K X 0 0 0 0 4

1

2

3

4

5

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12

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27

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 PRESSURECONTROL 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