Opel Frontera UBS. Manual - part 2563

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–115

252L100003

252L100004

252L100005

252L100016

Important operations
Check operation of one-way clutch

Hold the OD direct clutch drum and turn the input shaft.
The input shaft should turn freely clockwise and should lock
counterclockwise.
(1): Free
(2): Lock

1. OD direct clutch assembly

Remove OD direct clutch assembly from OD planetary
gear.

2. Thrust bearing

Then remove thrust bearing with the race from OD direct
clutch drum.

Check piston stroke of OD direct clutch (C-O)

Place the oil pump onto the torque converter, and then
place the OD direct clutch assembly onto the oil pump.

Use a dial indicator, measure the OD direct clutch piston
stroke applying and releasing the compressed air (4– 8 kg/
cm

2

, 57– 114 psi, 392– 785 kPa) as shown.

mm (in.)

Piston stroke

1.85– 2.15

(0.0728– 0.0847)

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.

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)