Isuzu KB P190. Manual — part 1045
UNIT REPAIR (AW30–40LE)
7A4–45
12. Remove snap ring.
252RY00022
13. Remove ring gear flange from OD planetary ring
gear.
252RY00023
14. Remove the Race.
15. Remove snap ring, using screwdriver.
252RY00024
16. Remove retaining plate from OD planetary gear.
252RY00025
17. Remove OD one-way clutch with outer race.
252RY00026
7A4–46
UNIT REPAIR (AW30–40LE)
18. Remove the thrust washer.
Inspection and Repair
1. Check discs.
Using a micrometer, measure the thickness of the
discs.
Minimum thickness: 2.04 mm (0.0803in)
If the thickness is less than the minimum, replace
the disc.
252RY00027
2. Check piston return spring
Using calipers, measure the free length of the return
spring.
Standard length: 15.8mm (0.622 in)
252RY00028
3. Check OD direct clutch piston.
Check that the check ball is free by shaking the
piston. Check that the valve does not leak by
applying low-pressure compressed air.
252RY00029
4. Check OD direct clutch drum bushings.
Using a dial indicator, measure the inside diameter
of the OD direct clutch drum bushings.
Maximum inside diameter: 27.11mm (1.0673in)
If the inside diameter is greater than the maximum,
replace the OD direct clutch drum.
252L100009
UNIT REPAIR (AW30–40LE)
7A4–47
5. Check OD planetary gear bushing.
Using a dial indicator, measure the inside diameter
of replace the OD planetary gear bushing.
Maximum inside diameter: 11.27mm (0.4437 in)
If the inside diameter is greater than the maximum,
replace the OD planetary gear.
252RY00031
Reassembly
1. Install the thrust washer to the OD planetary gear,
facing the grooved side upward.
252RY00032
2. Install the one-way clutch into the outer race, with
the flanged side of the one-way clutch facing
upward.
252RY00033
3. Install OD one-way clutch with outer race to
overdrive planetary gear.
252RY00026
7A4–48
UNIT REPAIR (AW30–40LE)
4. Install retaining plate, then install snap ring, using a
screwdriver.
252RY00024
5. Coat the race with petroleum jelly and install it to the
planetary gear.
Race diameter (Reference)
252RY00034
6. Install ring gear flange to OD planetary ring gear.
252RY00023
7. Install snap ring, using a screwdriver.
252RY00022
Inside diameter
24.7 mm (0.972in)
Outside diameter
41.8 mm (1.646in)
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