1998 OPEL FRONTERA automatic transmission

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–127
252RY00042
252RY00043
252RY00044
252RY00045
Important operations
Check OD brake piston
Place the OD suppor t 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 suppor t 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)
252RY00046
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
252RY00068
Reassembly steps
1. Oil seal ring
2. O-ring
3. OD brake piston
4. Piston retur n spring
5. Snap ring
6. Thrust washer (Plastic)
7. Race
8. Thrust bearing

7A–130 AUTOMATIC TRANSMISSION (AW30-40LE)
252RY00047
252RY00048
252RY00049
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 suppor t, 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.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–131
252RY00051
252RY00052
252RY00069
6. Thrust washer (plastic)
Coat the thrust washer with petroleum jelly and install it onto
the OD support.
NOTE:
Make sure that the lug fits into the hole on the OD support.
7. Race
Coat the race with petroleum jelly, and install it onto the OD
support.
8. Thrust bearing
Turn over OD suppor t.
Coat the two races with petroleum jelly, and install them
onto the OD support. Race diameter (Reference) mm (in.)
Inside diameter 36.8 (1.449)
Outside diameter 50.9 (2.004)
Race and bearing diameter (Reference) mm (in.)
Inside Outside
Race (A) 37.2 (1.465) 58.8 (2.315)
Bearing 36.5 (1.437) 48.5 (1.910)
Race (B) 33.7 (1.327) 50.1 (1.973)

7A–132 AUTOMATIC TRANSMISSION (AW30-40LE)
252RY00042
252RY00043
Check OD brake piston
Place the OD suppor t 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.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–133
DIRECT CLUTCH ASSEMBLY (C-2)
DISASSEMBLY
248RY00059
Disassembly steps
1. Clutch drum thrust washer
2. Snap ring
3. Flange
4. Plate and disc
5. Snap ring
6. Piston return spring
7. Direct clutch piston
8. O-ring

7A–134 AUTOMATIC TRANSMISSION (AW30-40LE)
248RY00028
248RY00029
248RY00061
248RY00002
Important operations
Remove direct clutch drum assembly from forward clutch
assembly.
Check piston stroke of direct clutch (C-2)
Place the direct clutch assembly onto the OD suppor t
assembly.
Using a dial indicator, measure the direct clutch piston
stroke by applying and releasing compressed air (4– 8 kg/
cm
2, 57– 114 psi or 392– 785 kPa) as shown.
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: 5-8840-0254-0 (J-25048)mm (in.)
Piston stroke1.6– 1.9
(0.0630– 0.0748)