Opel Frontera UBS. Manual - part 2566

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–127

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252RY00043

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Important operations

Check OD brake piston
Place the OD support assembly onto the direct clutch
assembly.

Apply compressed air into the oil passage as shown, and be
sure that the OD brake piston moves smoothly.

4. Snap ring

Place special tool on the spring retainer, and compress the
return spring with a shop press.
Spring compressor: 5-8840-2170-0 (J-37233)
Remove the snap ring with a screwdriver.

6. OD brake piston

Place the OD support onto the direct clutch assembly.
Hold the OD brake piston so it is not slanted and apply
compressed air into the passage to remove the OD brake
piston.
Remove the OD brake piston.

7A–128

AUTOMATIC TRANSMISSION (AW30-40LE)

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INSPECTION AND REPAIR

Make necessary correction or parts replacement if wear,
damage or any abnormal conditions are found through
inspection.

Check piston return spring

Using calipers, measure the free length of the return spring.

mm (in.)

Standard

17.2 (0.677)

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–129

REASSEMBLY

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Reassembly steps

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 1. Oil seal ring

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 2. O-ring

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 3. OD brake piston

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 4. Piston return spring

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 5. Snap ring

▲

 6. Thrust washer (Plastic)

▲

 7. Race

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 8. Thrust bearing

7A–130

AUTOMATIC TRANSMISSION (AW30-40LE)

252RY00047

252RY00048

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252RY00050

Important operations

1. Oil seal ring

Coat the two oil seal rings with ATF.
Contract the oil seals as shown, and install them onto the
OD support.

NOTE:  
Do not spread the ring ends more than necessary.

2. O-ring

Coat two new O-rings with ATF and install them on the OD
brake piston.

3. OD brake piston

Being careful not to damage the O-rings, press in the brake
piston into the OD support, using both hands.

4. Piston return spring 

Install piston return spring.

5. Snap ring

Place special tool on the spring retainer, and compress the
return spring with a shop press.
Spring compressor: 5-8840-2170-0 (J-37233)
Install the snap ring with a screwdriver. Be sure the end gap
of the snap ring is not aligned with cutout portion of the OD
support.