Isuzu Trooper (1998-2002 year). Manual — part 729

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–113

241RY00006

241RY00015

241RY00016

241RY00017

3. Stator shaft

Align the stator shaft with the bolt holes.
Tighten the thirteen bolts.

4. Oil seal ring

Coat the oil seal rings with ATF.
Contract the oil seal rings as shown, and install them onto
the stator shaft.

NOTE:
Do not spread the ring ends too much.

5. O-ring

Coat a new O-ring with ATF and install it to the oil pump
body.

Check oil pump drive gear rotation

Make sure the drive gear rotates smoothly when installed to
the torque converter.

N·m (kg·m/Ib in)

Torque

11 (1.1/95)

O-ring size (Reference)

mm (in.)

Inside diameter

204.9 (8.067)

Thickness

3.5 (0.138)

7A–114

AUTOMATIC TRANSMISSION (AW30-40LE)

OD PLANETARY GEAR AND OD DIRECT CLUTCH ASSEMBLY (C-0)

DISASSEMBLY

252L100002

Disassembly steps

▲

1. OD direct clutch assembly

▲

2. Thrust bearing

▲

3. Snap ring

▲

4. Flange, disc and plate

▲

5. Snap ring

▲

6. Piston return spring

▲

7. OD direct clutch piston with O-ring

▲

8. O-ring

▲

9. Thrust bearing

▲

10. Snap ring

▲

11. Ring gear flange

12. Race

▲

13. Snap ring

▲

14. Retaining plate

▲

15. OD one-way clutch

16. Thrust washer

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–115

252L100003

252L100004

252L100005

252L100016

Important operations
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

1. OD direct clutch assembly

Remove OD direct clutch assembly from OD planetary
gear.

2. Thrust bearing

Then remove thrust bearing with the race from OD direct
clutch drum.

Check piston stroke of OD direct clutch (C-O)

Place the oil pump onto the torque converter, and then
place the OD direct clutch assembly onto the oil pump.

Use a dial indicator, measure the OD direct clutch piston
stroke applying and releasing the compressed air (4– 8 kg/
cm

2

, 57– 114 psi, 392– 785 kPa) as shown.

mm (in.)

Piston stroke

1.85– 2.15

(0.0728– 0.0847)

7A–116

AUTOMATIC TRANSMISSION (AW30-40LE)

252L100006

252L100007

252L100008

252ry00021

3. Snap ring

Remove snap ring from clutch drum.

4. Flange, disc and plate

Remove flange, two discs and two plates.

5. Snap ring

Place special tool and a suitable ring on the spring retainer
and compress the return spring. Using snap ring pliers,
remove the snap ring.
Spring compressor: 5-8840-0195-0 (J-23327-1)

6. Piston return spring

Remove piston return spring.

7. OD direct clutch piston with O-ring

Place the oil pump onto the torque converter and then
place the OD direct clutch onto the oil pump.
Holding the OD direct clutch piston by hand, apply
compressed air to the oil pump to remove the OD direct
clutch piston.
Remove the OD direct clutch piston.

8. O-ring

Remove two O-rings from piston.

9. Thrust bearing

Remove bearing and race from OD planetary ring gear.