Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 407

7A-176 AUTOMATIC TRANSMISSION (AW30-40LE)

REASSEMBLY

246R200002

Reassembly steps

1. O-ring
2. Second brake piston
3. Second brake drum
4. Piston

sleeve

5. Piston

return

spring

6. Spring

retainer

7. Snap

ring

8. Thrust

washer

(Plastic)

9. Second brake assembly

246RY00009

Reassembly steps

1. O-ring

Coat new O-rings with ATF and install them on the
second brake piston.

2. Second brake piston
3. Second brake drum

Being careful not to damage the O-rings, press in the
second brake piston into the second brake drum.

4. Piston sleeve

Install piston sleeve.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-177

246RY00010

5. Piston return spring

Install piston return spring.

6. Spring retainer

Install spring retainer.

247RY00001

7. Snap ring

Place special tool on the spring retainer, and compress
the return spring.
Spring compressor: 5-8840-0254-0 (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.

246RY00011

Check second brake piston movement

Make sure the second brake piston moves smoothly
when applying and releasing the low compressed air to
the second brake drum.

246RY00012

8. Thrust washer (plastic)

Coat the thrust washer with petroleum jelly and install it
to the second brake piston, with the grooved side facing
upward.
NOTE:
Make sure that the cutout portions of the thrust
washer match the teeth of the spring retainer.

246RY00014

9. Second brake assembly

Install second brake assembly to output shaft.

7A-178 AUTOMATIC TRANSMISSION (AW30-40LE)

REAR PLANETARY GEAR

ASSEMBLY AND OUTPUT SHAFT

DISASSEMBLY

247R200005

Disassembly steps

1. Second brake assembly
2. Output

shaft

3. Oil seal ring
4. Disc, plate and flange
5. Rear planetary gear assembly
6. One-way clutch inner race
7. Snap

ring

8. One-way

clutch

9. Thrust

washer

(Plastic)

10. Thrust washer (Plastic)
11. Rear planetary gear
12. Thrust bearing and race
13. Snap ring
14. Ring gear flange
15. Rear planetary ring gear

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-179

246RY00014

Disassembly steps

1. Second brake assembly
2. Output shaft

Remove second brake assembly from output shaft.

247RY00028

3. Oil seal ring

Remove oil seal ring from output shaft.

4. Disc, plate and flange

247RY00029

5. Rear planetary gear assembly

Remove rear planetary gear from rear planetary ring
gear.

247RY00030

Check operation of No.2 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

247RY00031

6. One-way clutch inner race

Remove the one-way clutch inner race from the rear
planetary gear.