1998 OPEL FRONTERA transmission

7A–154 AUTOMATIC TRANSMISSION (AW30-40LE)
248RY00051
248RY00052
248RY00053
248RY00054
Important operations
Check operation of No.1 one–way clutch
Hold the planetary sun gear and turn the second brake
hub. The second brake hub should turn freely clockwise
and should lock counterclockwise.
(1) : Free
(2) : Lock
3. Oil seal ring (Metal)
Remove two oil seal rings.
4. Snap ring
Remove the snap ring with snap ring pliers.
INSPECTION AND REPAIR
Check planetary sun gear bushing
Using a dial indicator, measure the inside diameter of the
planetary sun gear bushing.
If the inside diameter is greater than the maximum, replace
the planetary sun gear.mm (in.)
Maximum inside diameter 27.08 (1.0661)

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–155
REASSEMBLY
248RY00066
Reassembly steps
1. Snap ring
2. Sun gear input drum
3. Snap ring
4. Oil seal ring (Metal)
5. Thrust washer (Plastic)
6. One–way clutch and second brake hub

7A–156 AUTOMATIC TRANSMISSION (AW30-40LE)
248RY00055
248RY00056
248RY00053
248RY00052
Important operations
1. Snap ring
Install snap ring to planetary sun gear.
2. Sun gear input drum
Place a wooden block, etc. as a work stand and place the
planetary sun gear onto it.
Install the sun gear input drum onto the planetary sun gear.
3. Snap ring
Install snap ring with snap ring pliers.
4. Oil seal ring (Metal)
Coat the two oil seal rings with ATF.
Install the two oil seal rings onto the planetary sun gear.
NOTE:
Do not spread the ring ends too much.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–157
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248RY00051
5. Thrust washer (plastic)
Install thrust washer.
NOTE:
Make sure that the lugs fit into the holes on the sun gear
input drum.
6. One–way clutch and second brake hub
Install assembled No.1 one–way clutch and second brake
hub onto planetary sun gear as shown.
Check operation of No.1 one–way clutch
Hold the planetary sun gear and turn the second brake
hub. The second brake hub should turn freely clockwise
and should lock counterclockwise.
(1) : Free
(2) : Lock

7A–158 AUTOMATIC TRANSMISSION (AW30-40LE)
SECOND BRAKE ASSEMBLY (B–2)
DISASSEMBLY
246RY00006
Disassembly steps
1. Second brake assembly
2. Thrust washer (Plastic)
3. Snap ring
4. Spring retainer
5. Piston return spring
6. Piston sleeve
7. Second brake piston
8. O–ring

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–159
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Important operations
1. Second brake assembly
Remove second brake assembly from output shaft.
2. Snap ring
Place special tool on the spring retainer, and compress the
return spring.
Spring compressor : 5–8840–0254–0 (J–25048)
Remove the snap ring with snap ring pliers.
7. Second brake piston
Holding the second brake piston by hand, apply
compressed air to the second brake drum to remove the
second brake piston.
Remove the second brake piston.
INSPECTION AND REPAIR
Check piston return spring
Using calipers, measure the free length of the return
spring.
mm (in.)
Standard length 16.05 (0.6319)

7A–160 AUTOMATIC TRANSMISSION (AW30-40LE)
REASSEMBLY
246RY00023
Reassembly steps
1. O–ring
2. Second brake piston
3. Piston sleeve
4. Piston retur n spring
5. Spring retainer
6. Snap ring
7. Thrust washer (Plastic)
8. Second brake assembly

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–161
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246RY00010
247RY00001
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Important operations
1. O–ring
Coat new O–ring with ATF and install them on the second
brake piston.
2. Second brake piston
Being careful not to damage the O–rings, press in the
second brake piston into the second brake drum.
3. Piston sleeve
Install piston sleeve.
4. Piston return spring
Install piston return spring.
5. Spring retainer
Install spring retainer.
6. Snap ring
Place special tool on the spring retainer, and compress the
return spring.
Spring compressor : 5–8840–0254–0(J–25048)
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.
Check second brake piston movement
Make sure the second brake piston moves smoothly when
applying and releasing the low compressed air to the
second brake drum.