Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 328

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-161

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 (B-2)
25. Snap ring
26. Rear planetary gear, second brake

drum and output shaft

27. Bearing

7A-162 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.

252L100001

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-163

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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 two flange, three plates and four discs.

7A-164 AUTOMATIC TRANSMISSION (AW30-40LE)

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8. Bearing and race

Remove the thrust bearing and two races.

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9. Snap ring

Using snap ring pliers, remove the snap ring.

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10. OD support

Remove two bolts fixing the overdrive support
assembly to the transmission case.

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Install two removed bolts to the OD support, and pull
out the OD support assembly.

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11. Race

Remove the race from OD support.