Page 5905 of 6000
7A–124 AUTOMATIC TRANSMISSION (AW30-40LE)
252L100014
252L100005
252L100016
14. Snap ring
Install snap ring.
Check piston stroke of OD direct clutch (C-0).
Place the oil pump onto the torque converter, and then
place the OD direct clutch assembly onto the oil pump.
Using a dial indicator, measure the OD direct clutch piston
stroke by applying and releasing the compressed air (4– 8
kg/cm
2, 57– 114 psi or 392– 785 kPa) as shown.
If the piston stroke is not within specification, replace the
disc and recheck the piston stroke.
If the piston stroke is non standard, select another flange.
There are six flange sizes.mm (in.)
Piston stroke mm (in.)1.85– 2.15
(0.0728– 0.0847)
mm (in.)
No. Flange thickness No. Flange thickness
16 3.6 (0.142) 19 3.3 (0.130)
17 3.5 (0.138) 20 3.2 (0.126)
18 3.4 (0.134) 21 3.1 (0.122)
Page 5906 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–125
252L100015
252L100004
252L100003
15. Thrust bearing
Coat the assembled bearing and race with petroleum jelly
and install it with the race side facing downward.
16. OD direct clutch assembly
Align the flukes of discs in the direct clutch .
Install the OD direct clutch assembly onto the OD planetary
gear.
Check operation of one-way clutch.
Hold the OD direct clutch drum and turn the input shaft.
The input shaft should turn freely clockwise and should lock
counterclockwise.
(1): Free
(2): Lock Assembled bearing and race (Reference) mm (in.)
Inside diameter 28.9 (1.138)
Outside diameter 50.2 (1.976)
Page 5907 of 6000
7A–126 AUTOMATIC TRANSMISSION (AW30-40LE)
OD SUPPORT ASSEMBLY
DISASSEMBLY
252RY00041
Disassembly steps
1. Thrust bearing
2. Race
3. Thrust washer (plastic)
4. Snap ring
5. Piston return spring
6. OD brake piston
7. O-ring
Page 5908 of 6000
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.
Page 5909 of 6000
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)
Page 5910 of 6000
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
Page 5911 of 6000
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.
Page 5912 of 6000
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)