Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 337
AUTOMATIC TRANSMISSION (AW30-40LE) 7A-197
252L100007
14. Snap ring
Place special tool on the spring retainer, and compress
the return spring.
Spring compressor : 5-8840-0195-0 (J-23327-1)
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.
252L100013
15. Flange, disc and plate
Install two plates and tow discs then install the flange,
with the flat side facing downward.
252L100014
16. Snap ring
Install snap ring.
252L100005
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.
7A-198 AUTOMATIC TRANSMISSION (AW30-40LE)
Using a dial indicator, measure the OD direct clutch
piston stroke by applying and releasing the compressed
air (390 – 780 kPa, 4 – 8 kg/cm
2
or 57 – 114 psi) as
shown.
Piston stroke: 1.85 – 2.15 mm (0.0729 – 0.0847 in)
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.
Flange sizes
Flange
thickness Flange
thickness
3.8 mm (0.150 in)
3.4 mm (0.134 in)
3.7 mm (0.146 in)
3.3 mm (0.130 in)
3.6 mm (0.142 in)
3.2 mm (0.126 in)
3.5 mm (0.138 in)
3.1 mm (0.122 in)
252L100016
17. Thrust bearing
Coat the assembled bearing and race with petroleum
jelly and install it with the race side facing downward.
Bearing and race (Reference)
Inside diameter
28.9 mm (1.138 in)
Outside diameter
50.2 mm (1.976 in)
252L100015
252L100004
18. OD direct clutch assembly
Align the flukes of discs in the direct clutch.
Install the OD direct clutch assembly onto the OD
planetary gear.
252L100003
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
AUTOMATIC TRANSMISSION (AW30-40LE) 7A-199
OD SUPPORT ASSEMBLY
DISASSEMBLY
252R200003
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
8. Oil seal ring
9. OD
support
252RY00042
Disassembly steps
Check OD brake piston movement
Place the OD support assembly onto the direct clutch
assembly.
7A-200 AUTOMATIC TRANSMISSION (AW30-40LE)
252RY00043
Apply compressed air into the oil passage as shown,
and be sure that the OD brake piston moves smoothly.
1. Thrust bearing
2. Race
3. Thrust washer (plastic)
252RY00044
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.
5. Piston return spring
252RY00045
6. OD brake piston
Place the OD support 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.
7. O-ring
8. Oil seal ring
9. OD support
INSPECTION AND REPAIR
Make necessary correction or parts replacement if
wear, damage or any abnormal conditions are found
through inspection.
252RY00046
Check piston return spring
Using calipers, measure the free length of the return
spring.
Standard length: 17.2 mm (0.677 in)
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