Page 5897 of 6000
7A–116 AUTOMATIC TRANSMISSION (AW30-40LE)
252L100006
252L100007
252L100008
252ry00021
3. Snap ring
Remove snap ring from clutch drum.
4. Flange, disc and plate
Remove flange, two discs and two plates.
5. Snap ring
Place special tool and a suitable ring on the spring retainer
and compress the return spring. Using snap ring pliers,
remove the snap ring.
Spring compressor: 5-8840-0195-0 (J-23327-1)
6. Piston return spring
Remove piston return spring.
7. OD direct clutch piston with O-ring
Place the oil pump onto the torque converter and then
place the OD direct clutch onto the oil pump.
Holding the OD direct clutch piston by hand, apply
compressed air to the oil pump to remove the OD direct
clutch piston.
Remove the OD direct clutch piston.
8. O-ring
Remove two O-rings from piston.
9. Thrust bearing
Remove bearing and race from OD planetary ring gear.
Page 5898 of 6000
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.
Page 5899 of 6000
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)
Page 5900 of 6000
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)
Page 5901 of 6000
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
Page 5902 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–121
252RY00032
252RY00033
252RY00026
252RY00024
Important operations
1. Thrust washer
Install the thrust washer to the OD planetary gear, facing
the grooved side upward.
2. OD one-way clutch
Install the one-way clutch into the outer race, with the
flanged side of the one-way clutch facing upward.
Install OD one-way clutch with outer race to overdrive
planetary gear.
3. Retaining plate
4. Snap ring
Install retaining plate, then install snap ring, using a
screwdriver.
Page 5903 of 6000
7A–122 AUTOMATIC TRANSMISSION (AW30-40LE)
252RY00034
252RY00023
252RY00022
252RY00035
5. Race
Coat the race with petroleum jelly and install it to the
planetary gear.
6. Ring gear flange
Install ring gear flange to OD planetary ring gear.
7. Snap ring
Install snap ring, using a screwdriver.
8. Thrust bearing
Coat the race and bearing with petroleum jelly and install
them onto the OD planetary ring gear. Race diameter (Reference) mm (in.)
Inside diameter 27.3 (1.075)
Outside diameter 41.8 (1.646)
Race and bearing diameter (Reference) mm (in.)
Inside Outside
Race 24.2 (0.953) 47.8 (1.882)
Bearing 26.0 (1.024) 46.8 (1.843)
Page 5904 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–123
252L100011
252L100012
252L100007
252L100013
9. O-ring
Coat new O-rings with ATF and install them on the OD
direct clutch piston.
10. OD direct clutch piston with O-ring
Being careful not to damage the O-rings, press in the OD
direct clutch piston into the clutch drum, using both hands.
11. Piston return spring
Install piston return spring.
12. Snap ring
Place special tool and a suitable ring on the spring retainer,
and compress the return spring.
Spring compressor: 5-8840-0195-0 (J-23327-1)
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.
13. Flange, disc and plate
Install two plates and two discs then install the flange, with
the flat side facing downward.