Isuzu Trooper (1998-2002 year). Service manual — part 730
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–117
252RY00022
252RY00023
252RY00024
252RY00025
10. Snap ring
Remove snap ring.
11. Ring gear flange
Remove ring flange from OD planetary ring gear.
13. Snap ring
Remove snap ring, using screwdriver.
14. Retaining plate
Remove retaining plate from OD planetary gear.
7A–118
AUTOMATIC TRANSMISSION (AW30-40LE)
252RY00026
252RY00027
252RY00028
252RY00029
15. OD one-way clutch
Remove OD one-way clutch with outer race.
INSPECTION AND REPAIR
Check discs
Using a micrometer, measure the thickness of the discs.
If the thickness is less than the minimum, replace the disc.
Check piston return spring
Using calipers, measure the free length of the return spring.
Check OD direct clutch piston
Check that check ball is free by shaking the piston.
Check that the valve does not leak by applying low-pressure
compressed air.
mm (in.)
Minimum thickness
1.84 (0.0724)
mm (in.)
Standard length
15.8 (0.622)
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–119
252L100009
252RY00031
Check OD direct clutch drum bushings
Using a dial indicator, measure the inside diameter of the
clutch drum bushings.
If the inside diameter is greater than the maximum, replace
the clutch drum.
Check OD planetary gear bushing
Using a dial indicator, measure the inside diameter of the
planetary gear bushing.
If the inside diameter is greater than the maximum, replace
the planetary gear.
mm (in.)
Maximum inside diameter
27.11 (1.0673)
mm (in.)
Maximum inside diameter
11.27 (0.4437)
7A–120
AUTOMATIC TRANSMISSION (AW30-40LE)
REASSEMBLY
252L100010
Reassembly steps
▲
1. Thrust washer
▲
2. OD one-way clutch
▲
3. Retaining plate
▲
4. Snap ring
▲
5. Race
▲
6. Ring gear flange
▲
7. Snap ring
▲
8. Thrust bearing
▲
9. O-ring
▲
10. OD direct clutch piston with O-ring
▲
11. Piston return spring
▲
12. Snap ring
▲
13. Flange, disc and plate
▲
14. Snap ring
▲
15. Thrust bearing
▲
16. OD direct clutch assembly
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