Opel Frontera UBS. Service manual — part 1469

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

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.