OPEL FRONTERA 1998 Workshop Manual

7A–170 AUTOMATIC TRANSMISSION (AW30-40LE)
246RY00014
13. Second brake assembly
Install second brake assembly to output shaft.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–171
FIRST AND REVERSE BRAKE (B–3)
DISASSEMBLY
246RY00024
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)
247RY00043
246RY00016
247RY00002
246RY00016
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
246RY00017
247RY00044
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
246RY00025
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

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–175
246RY00018
246RY00019
246RY00020
246RY00021
Important operations
1. O–ring
Coat three new O–rings with ATF.
Install the two O–ring on the No.1 piston.
2. O–ring
Install the O–ring on the reaction sleeve.
3. 1st and reverse brake piston No.1
Install the No.1 piston to the reaction sleeve.
4. O–ring
Coat a new O–ring with ATF and install it on the No.2
piston.
5. Reaction sleeve
Install the No.1 piston with reaction sleeve onto the No.2
piston.
6. 1st reverse brake piston No.2
Align the teeth of the No.2 piston into the proper grooves.
Being careful not to damage the O–rings, press in the No.2
with No.1 first and reverse brake pistons into the
transmission case.
7. Return spring
Place piston return spring onto No.2 piston.

7A–176 AUTOMATIC TRANSMISSION (AW30-40LE)
247RY00002
246RY00022
247RY00043
8. Snap ring
Set special tool as shown, and compress the return spring
with special tool.
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 first and reverse brake piston
Make sure the first and reverse brake piston moves
smoothly when applying and releasing the compressed air
into the transmission case.
9. Thrust bearing and race
Coat the assembled bearing and race with petroleum jelly.
Install the assembled bearing and race facing the bearing
side upward.
Assembled bearing and race
diameter. (Reference) mm (in.)
Inside diameter 39.2 (1.543)
Outside diameter 57.7 (2.272)

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–177
TRANSMISSION CASE
DISASSEMBLY
249RY00001
Disassembly steps
1. Spacer
2. Pin
3. Manual valve lever shaft
4. Manual valve lever
5. Oil seal
6. Oil seal

7A–178 AUTOMATIC TRANSMISSION (AW30-40LE)
249RY00002
249RY00003
249RY00004
240RY00021
Important operations
1. Spacer
Using a chisel, cut off the spacer and remover it from the
shaft.
2. Pin
Using a punch, drive out the pin.
3. Manual valve lever shaft
4. Manual valve lever
Pull the manual valve lever shaft out through the case by
the threads.
5. Oil seal
6. Oil seal
Using a screwdriver, remove the oil seal.
On–vehicle replacement of oil seal
Using special tool, install the oil seal.
Installer : 5–8840–2169–0 (J–37232–2)

AUTOMATIC TRANSMISSION (AW30-40LE) 7A–179
REASSEMBLY
249RX00001
Reassembly steps
1. Oil seal
2. Oil seal
3. Spacer
4. Manual valve lever
5. Manual valve lever shaft
6. Pin