1998 OPEL FRONTERA automatic transmission

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–167
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Important operations
1. Ring gear flange
Install ring gear flange to the ring gear.
2. Snap ring
Install snap ring to the ring gear.
3. Thrust bearing and race
Coat the races and bearing with petroleum jelly, and install
them onto the rear planetary ring gear.
4. Thrust washer (Plastic)
5. Thrust washer (Plastic)
Coat the thrust washer with petroleum jelly.
Install the thrust washer onto both sides of the rear
planetary gear, facing the grooved side upward.
NOTE:
Make sure that the lugs fit into the cutout portions on the
rear planetary gear.
6. One–way clutch
Install the one–way clutch with the flanged side facing
upward onto the rear planetary gear. Races and bearing diameter (Reference) mm (in.)
Inside Outside
Race (A) 28.8 (1.134) 44.8 (1.764)
Bearing 30.1 (1.185) 44.7 (1.760)
Race (B) 27.8 (1.095) 44.8 (1.764)

7A–168 AUTOMATIC TRANSMISSION (AW30-40LE)
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7. Snap ring
Install snap ring.
8. One–way clutch inner race
While turning counterclockwise, install one–way clutch
inner race to rear planetary gear.
Check operation of one–way clutch
Hold the planetary gear and turn the one–way clutch inner
race. The one–way clutch inner race should turn freely
counterclockwise and should lock clockwise.
(1) : Lock
(2) : Free
9. Rear planetary gear assembly
Install rear planetary gear onto rear planetary ring gear.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–169
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10. Disc, plate, and flange
Install a clutch plate onto the rear planetary gear assembly.
NOTE:
The claw interval of the plate should be as shown in the
figure when viewing the clutch plate from the arrow
direction.
Install a brake flange onto the rear planetary gear
assembly.
Install seven clutch discs and seven brake plates
alternately, star ting with clutch disc, onto the rear planetary
gear assembly.
11. Oil seal ring
Coat the oil seal ring with ATF and install it to the output
shaft.
NOTE:
Do not spread the ring ends too much.
12. Output shaft
Install output shaft into rear planetary assembly.

7A–170 AUTOMATIC TRANSMISSION (AW30-40LE)
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13. Second brake assembly
Install second brake assembly to output shaft.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–171
FIRST AND REVERSE BRAKE (B–3)
DISASSEMBLY
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Disassembly steps
1. Thrust bearing and race
2. Snap ring
3. Piston return spring
4. 1st and reverse brake piston No.2
5. O–ring
6. Reaction sleeve
7. O–ring
8. 1st and reverse brake piston No.1
9. O–ring

7A–172 AUTOMATIC TRANSMISSION (AW30-40LE)
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Important operations
1. Thrust bearing and race
Remove assembled bearing and race from transmission
case.
Check first and reverse brake piston movement
Make sure that first and reverse brake piston moves
smoothly when applying and releasing the compressed air
into the transmission case.
2. Snap ring
Set 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.
4. 1st and reverse brake piston No.2
Holding the No.2 first and reverse brake piston by hand,
apply compressed air to the transmission case to remove
the No.2 first and reverse brake piston.
Remove the No.2 first and reverse brake piston.
If the piston does not pop out with compressed air, lift the
piston out with needle–nose pliers.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–173
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6. Reaction sleeve
Insert special tool behind the reaction sleeve and gradually
lift it out of the transmission case.
Reaction sleeve puller : 5–8840–2173–0 (J–37236)
8. 1st and reverse brake piston No.1
Insert special tool behind the No.1 brake piston and
gradually lift it out of the transmission case.
Piston puller : 5–8840–2174–0 (J–37237)

7A–174 AUTOMATIC TRANSMISSION (AW30-40LE)
REASSEMBLY
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Reassembly steps
1. O–ring
2. O–ring
3. 1st and reverse brake piston No.1
4. O–ring
5. Reaction sleeve
6. 1st and reverse brake piston No.2
7. Return spring
8. Snap ring
9. Thrust bearing and race