Isuzu Trooper (1998-2002 year). Manual - part 740

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–157

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5. Thrust washer (plastic)

Install thrust washer.

NOTE:  
Make sure that the lugs fit into the holes on the sun gear
input drum.

6. One–way clutch and second brake hub

Install assembled No.1 one–way clutch and second brake
hub onto planetary sun gear as shown.

Check operation of No.1 one–way clutch

Hold the planetary sun gear and turn the second brake
hub. The second brake hub should turn freely clockwise
and should lock counterclockwise.
(1) : Free
(2) : Lock

7A–158

AUTOMATIC TRANSMISSION (AW30-40LE)

SECOND BRAKE ASSEMBLY (B–2)

DISASSEMBLY

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Disassembly steps

▲

 1. Second brake assembly

2. Thrust washer (Plastic)

▲

 3. Snap ring

4. Spring retainer

5. Piston return spring

6. Piston sleeve

▲

 7. Second brake piston

8. O–ring

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–159

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Important operations

1. Second brake assembly

Remove second brake assembly from output shaft.

2. Snap ring

 Place special tool on the spring retainer, and compress the
return spring.
Spring compressor : 5–8840–0254–0 (J–25048)
Remove the snap ring with snap ring pliers.

7. Second brake piston

Holding the second brake piston by hand, apply
compressed air to the second brake drum to remove the
second brake piston.
Remove the second brake piston.

INSPECTION AND REPAIR

Check piston return spring

Using calipers, measure the free length of the return
spring.

mm (in.)

Standard length

16.05 (0.6319)

7A–160

AUTOMATIC TRANSMISSION (AW30-40LE)

REASSEMBLY

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Reassembly steps

▲

 1. O–ring

▲

 2. Second brake piston

▲

 3. Piston sleeve

▲

 4. Piston return spring

▲

 5. Spring retainer

▲

 6. Snap ring

▲

 7. Thrust washer (Plastic)

▲

 8. Second brake assembly