Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 403

7A-160 AUTOMATIC TRANSMISSION (AW30-40LE)

247RY00034

Check piston return spring

Using calipers, measure the free length of the return
spring.
Standard length: 19.47 mm (0.7665 in)

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

REASSEMBLY

248R200004

Reassembly steps

1. Forward

clutch

drum

2. Thrust

bearing

3. Oil seal ring
4. O-ring
5. O-ring
6. Forward

clutch

piston

7. Piston

return

spring

8. Snap

ring

9. Cushion

plate

10. Disc and plate
11. Flange
12. Snap ring
13. Race
14. Thrust bearing

7A-162 AUTOMATIC TRANSMISSION (AW30-40LE)

Reassembly steps

1. Forward clutch drum
2. Thrust bearing

Coat the assembled bearing and race with petroleum
jelly and install it onto the forward clutch drum, with the
race side facing downward.

Bearing and race (Reference)

Inside diameter

33.7 mm (1.327 in)

Outside diameter

47.8 mm (1.882 in)

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3. Oil seal ring

Coat the three oil rings with ATF.
Contract the oil seal rings as shown, and install three oil
seal rings onto the forward clutch drum.
NOTE:
Do not spread the ring ends more than necessary.

248RY00047

4. O-ring

Coat a new O-ring with ATF and install O-ring on the
forward clutch drum.

5. O-ring

Coat new O-rings with ATF and install two O-rings on
the forward clutch piston.

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6. Forward clutch piston

Being careful not to damage the O-rings, press the
forward clutch piston into the forward clutch drum.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-163

248RY00065

7. Piston return spring

Install piston return spring.

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8. Snap ring

Place special tool on the spring retainer, and compress
the return spring.
Spring compressor: 5-8840-0245-0 (J-25048)
Install the snap ring with snap ring pliers.
Be sure the end gap of the snap ring is not aligned with
the spring retainer claw.

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9. Cushion plate

Install cushion plate rounded side down as shown.

248R200007

10. Disc and plate

Install discs and plates.
Install in order: P-D-P-D-P-D-P-D-P-D

11. Flange

And then install the flange, with the rounded edge
facing downward.

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12. Snap ring

Install the snap ring with a screwdriver.
Be sure the end gap of the snap ring is not aligned with
the cutout portion of the forward clutch drum.