Isuzu Trooper (1998-2002 year). Service manual — part 741
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–161
246RY00009
246RY00010
247RY00001
246RY00011
Important operations
1. O–ring
Coat new O–ring with ATF and install them on the second
brake piston.
2. Second brake piston
Being careful not to damage the O–rings, press in the
second brake piston into the second brake drum.
3. Piston sleeve
Install piston sleeve.
4. Piston return spring
Install piston return spring.
5. Spring retainer
Install spring retainer.
6. 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.
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.
7A–162
AUTOMATIC TRANSMISSION (AW30-40LE)
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7. 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.
8. Second brake assembly
Install second brake assembly to output shaft.
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–163
REAR PLANETARY GEAR ASSEMBLY AND OUTPUT SHAFT
DISASSEMBLY
247RY00027
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. Thrust bearing and race
12. Snap ring
13. Ring gear flange
7A–164
AUTOMATIC TRANSMISSION (AW30-40LE)
247RY00028
247RY00029
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247RY00031
Important operations
3. Oil seal ring
Remove oil seal ring from output shaft.
5. Rear planetary gear assembly
Remove rear planetary gear from rear planetary ring gear.
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
6. One–way clutch inner race
Remove the one–way clutch inner race from the rear
planetary gear.
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