Isuzu Trooper (1998-2002 year). Manual - part 744

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)