Isuzu Trooper (1998-2002 year). Manual - part 742

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–165

247RY00032

247RY00033

248RY00045

7. Snap ring

Remove the snap ring with a screwdriver.

8. One–way clutch

Remove the one–way clutch with retainers from the
planetary gear.

Check disc, plate and flange

Check to see if the sliding surface of the disc, plate and
flange are worn or burnt. If necessary, replace them.

• If the lining of the disc is peeling off or discolored, or even

if parts of the printed numbers are defaced, replace all
discs.

• Before assembling new discs, soak them in ATF for at

least fifteen minutes.

7A–166

AUTOMATIC TRANSMISSION (AW30-40LE)

REASSEMBLY

247RY00046

Reassembly steps

▲

 1. Ring gear flange

▲

 2. Snap ring

▲

 3. Thrust bearing and race

▲

 4. Thrust washer (Plastic)

▲

 5. Thrust washer (Plastic)

▲

 6. One–way clutch

▲

 7. Snap ring

▲

 8. One–way clutch inner race

▲

 9. Rear planetary gear assembly

▲

 10. Disc, plate, and flange

▲

 11. Oil seal ring

▲

 12. Output shaft

▲

 13. Second brake assembly

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–167

247RY00035

247RY00036

247RY00037

247RY00038

Important operations

1. Ring gear flange

Install ring gear flange to the ring gear.

2. Snap ring

Install snap ring to the ring gear.

3. Thrust bearing and race

Coat the races and bearing with petroleum jelly, and install
them onto the rear planetary ring gear.

4. Thrust washer (Plastic)

5. Thrust washer (Plastic)

Coat the thrust washer with petroleum jelly.
Install the thrust washer onto both sides of the rear
planetary gear, facing the grooved side upward.

NOTE:  
Make sure that the lugs fit into the cutout portions on the
rear planetary gear.

6. One–way clutch

Install the one–way clutch with the flanged side facing
upward onto the rear planetary gear.

Races and bearing diameter (Reference) 

mm (in.)

Inside

Outside

Race (A)

28.8 (1.134)

44.8 (1.764)

Bearing

30.1 (1.185)

44.7 (1.760)

Race (B)

27.8 (1.095)

44.8 (1.764)

7A–168

AUTOMATIC TRANSMISSION (AW30-40LE)

247RY00039

247RY00040

247RY00041

247RY00029

7. Snap ring

Install snap ring.

8. One–way clutch inner race

While turning counterclockwise, install one–way clutch
inner race to rear planetary gear.

Check operation of one–way clutch

Hold the planetary gear and turn the one–way clutch inner
race. The one–way clutch inner race should turn freely
counterclockwise and should lock clockwise.
(1) : Lock
(2) : Free

9. Rear planetary gear assembly

Install rear planetary gear onto rear planetary ring gear.