Isuzu Trooper (1998-2002 year). Service manual — part 740
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–157
248RY00057
248RY00058
248RY00051
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
246RY00006
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
246RY00007
247RY00001
246RY00008
247RY00034
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
246RY00023
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
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