Isuzu Trooper (1998-2002 year). Manual - part 750

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–197

252L100017

252L100001

252L100018

252RY00009

29. Race

Coat the race with petroleum jelly and install it onto the
planetary gear.

30.OD planetary gear and OD direct clutch

Install the overdrive planetary gear and direct clutch.

31.Bearing

Coat the assembled bearing and race with petroleum jelly
and install it onto the direct clutch.

Install the (flat ring) 4.0mm (0.157 in.) thick flange with the
rounded edge side of the flange facing the disc.
Alternately install three discs and two plates. (Disc first)

Race diameter (Reference) 

mm (in.)

Inside

Outside

Race

27.3 (1.075)

41.8 (1.646)

Bearing and race diameter (Reference) 

mm (in.)

Inside

Outside

Bearing and 

race

28.9 (1.138)

50.2 (1.976)

7A–198

AUTOMATIC TRANSMISSION (AW30-40LE)

246RY00001

252RY00014

241RY00003

Install the (stepped ring) flange with the flat side of the
flange facing the disc.
Install the snap ring.

32.Race

Coat the race with petroleum jelly and install it onto the oil
pump.

33.Oil pump

Coat the O–ring with ATF and install it around the pump
body.
Place the oil pump through the input shaft, and align the
bolt holes of the pump body with the transmission case.
Hold the input shaft, and lightly press the oil pump body to
slide the oil seal rings on the stator shaft through the direct
clutch drum.

NOTE:  
Do not push on the oil pump strongly or the oil seal ring
will stick to the direct clutch drum.

Install the seven bolts.

Check input shaft rotation

Make sure the input shaft rotates smoothly.

Race diameter (Reference) 

mm (in.)

Inside

Outside

Race

28.1 (1.106)

47.3 (1.862)

N·m(kg·m / lb·ft)

Torque

22 (2.2/16)

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–199

REASSEMBLY OF MAJOR COMPONENTS (2)

242RY00006

Reassembly steps

▲

 1. Second brake drum gasket

▲

 2. Accumulator piston

▲

 3. Check valve, spring

▲

 4. Valve body

▲

 5. Solenoid wiring

▲

 6. Oil strainer assembly

▲

 7. Oil pan

7A–200

AUTOMATIC TRANSMISSION (AW30-40LE)

240RY00013

240RY00014

240RY00027

Important operations

1. Second brake drum gasket

Install a new brake drum gasket to the transmission case.

Individual piston operation inspection

Check for the sound of operation while injecting
compressed air into the oil hole indicated in the figure.

NOTE:  
When inspecting the direct clutch, check with the C–0
accumulator piston hole closed. If there is no noise,
disassemble and check the condition of the parts.

A : C–0 Accumulator piston hole

2. Accumulator piston

Coat the O–ring with ATF and install it to the piston.
Install the five springs and four accumulator pistons to the
bore as shown in the figure.

1: OD direct clutch

5: Second coast brake 

2: Direct clutch

6. Second brake

3: Forward clutch

7. First and reverse brake

4: OD brake