Page 5937 of 6000
7A–156 AUTOMATIC TRANSMISSION (AW30-40LE)
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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.
Page 5938 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–157
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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
Page 5939 of 6000
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
Page 5940 of 6000
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)
Page 5941 of 6000
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
Page 5942 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–161
246RY00009
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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.
Page 5943 of 6000
7A–162 AUTOMATIC TRANSMISSION (AW30-40LE)
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7. Thrust washer (Plastic)
Coat the thrust washer with petroleum jelly and install it to
the second brake piston, with the grooved side facing
upward.
NOTE:
Make sure that the cutout portions of the thrust washer
match the teeth of the spring retainer.
8. Second brake assembly
Install second brake assembly to output shaft.
Page 5944 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–163
REAR PLANETARY GEAR ASSEMBLY AND OUTPUT SHAFT
DISASSEMBLY
247RY00027
Disassembly steps
1. Second brake assembly
2. Output shaft
3. Oil seal ring
4. Disc, plate and flange
5. Rear planetary gear assembly
6. One–way clutch inner race
7. Snap ring
8. One–way clutch
9. Thrust washer (Plastic)
10. Thrust washer (Plastic)
11. Thrust bearing and race
12. Snap ring
13. Ring gear flange