Isuzu Trooper (1998-2002 year). Service manual — part 732

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–125

252L100015

252L100004

252L100003

15. Thrust bearing

Coat the assembled bearing and race with petroleum jelly
and install it with the race side facing downward.

16. OD direct clutch assembly

Align the flukes of discs in the direct clutch .
Install the OD direct clutch assembly onto the OD planetary
gear.

Check operation of one-way clutch.
Hold the OD direct clutch drum and turn the input shaft.
The input shaft should turn freely clockwise and should lock
counterclockwise.
(1): Free
(2): Lock

Assembled bearing and race (Reference)

mm (in.)

Inside diameter

28.9 (1.138)

Outside diameter

50.2 (1.976)

7A–126

AUTOMATIC TRANSMISSION (AW30-40LE)

OD SUPPORT ASSEMBLY

DISASSEMBLY

252RY00041

Disassembly steps

1. Thrust bearing

2. Race

3. Thrust washer (plastic)

▲

4. Snap ring

5. Piston return spring

▲

6. OD brake piston

7. O-ring

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–127

252RY00042

252RY00043

252RY00044

252RY00045

Important operations

Check OD brake piston
Place the OD support assembly onto the direct clutch
assembly.

Apply compressed air into the oil passage as shown, and be
sure that the OD brake piston moves smoothly.

4. Snap ring

Place special tool on the spring retainer, and compress the
return spring with a shop press.
Spring compressor: 5-8840-2170-0 (J-37233)
Remove the snap ring with a screwdriver.

6. OD brake piston

Place the OD support onto the direct clutch assembly.
Hold the OD brake piston so it is not slanted and apply
compressed air into the passage to remove the OD brake
piston.
Remove the OD brake piston.

7A–128

AUTOMATIC TRANSMISSION (AW30-40LE)

252RY00046

INSPECTION AND REPAIR

Make necessary correction or parts replacement if wear,
damage or any abnormal conditions are found through
inspection.

Check piston return spring

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

mm (in.)

Standard

17.2 (0.677)