Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 390

7A-108 AUTOMATIC TRANSMISSION (AW30-40LE)

DISASSEMBLY OF MAJOR

COMPONENTS (3)

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AUTOMATIC TRANSMISSION (AW30-40LE) 7A-109

Disassembly steps

1. Oil

pump

2. Race
3. OD planetary gear and OD direct clutch
4. Race
5. OD planetary ring gear
6. Snap

ring

7. Flange, plate and disc (B-0)
8. Bearing

and

race

9. Snap

ring

10. OD support
11. Race
12. Snap ring
13. Second coast brake piston assembly
14. Direct clutch and forward clutch

15. E-ring and pin
16. Second coast brake band
17. Front planetary ring gear
18. Bearing and race
19. Race
20. Snap ring
21. Front planetary gear
22. Drum and one-way clutch
23. Snap ring
24. Flange, plate and disc
25. Snap ring
26. Rear planetary gear, second brake

drum and output shaft

27. Bearing

7A-110 AUTOMATIC TRANSMISSION (AW30-40LE)

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Disassembly steps

1. Oil pump

Remove seven bolts fixing the oil pump to the
transmission case.
Remove the oil pump.

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2. Race

Remove race from oil pump.

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3. OD planetary gear and OD direct clutch

Remove the overdrive planetary gear and overdrive
direct clutch with thrust needle bearing from the
transmission case.

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4. Race

Remove the race from OD planetary gear.

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5. OD planetary ring gear

Remove the overdrive planetary ring gear from the
transmission case.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-111

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Check piston stroke of overdrive brake

Place a dial indicator onto the overdrive brake piston as
shown in the figure.

Measure the stroke applying and releasing the
compressed air (390 – 780 kPa, 4 – 8 kg/cm

2

or 57 –

114 psi) as shown in the figure.
Piston stroke: 1.40 – 1.70 mm (0.0551 – 0.0669 in)
If the values are nonstandard, select another flange.

Available flange sizes

3.3 mm (0.130 in)

3.8 mm (0.150 in)

3.5 mm (0.138 in)

3.9 mm (0.154 in)

3.6 mm (0.142 in)

4.0 mm (0.158 in)

3.7 mm (0.146 in)

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6. Snap ring

Remove the snap ring.

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7. Flange, plate and disc (B-0)

Remove one flange, four plates and four discs.