Isuzu Trooper (1998-2002 year). Manual - part 749

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–193

248RY00005

248RY00004

252RY00007

252RY00005

Check piston stroke of second coast brake

Place a mark on the second coast brake piston rod as
shown in the figure.

Using wire gage, measure the stroke by applying the
compressed air (4–8kg/cm

2

, 57–114 psi or 392–785kPa)

as shown in the figure. 

If the values are nonstandard, check for an improper
installation.

21. Race

Coat the race with petroleum jelly and install it onto the
overdrive support assembly.

22. OD support

Aim the bolt and oil holes of the overdrive support toward
the valve hole side, and align them with the bolt hole of the
transmission case and insert.

mm (in.)

Piston stroke

1.5–3.0

(0.059–0.118)

Race diameter (Reference)

mm (in.)

Inside

Outside

Race

36.8 (1.450)

50.9 (2.004)

7A–194

AUTOMATIC TRANSMISSION (AW30-40LE)

252RY00008

252RY00004

247RY00020

252RY00009

23. Snap ring

Using snap ring pliers, install the snap ring as shown in the
figure.

Install and tighten the two bolts.

Check end of output shaft

Using a dial indicator, measure the end play of the output
shaft by hand.

24. Flange, plate and disc

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

N·m(kg·m / lb·ft)

Torque

25 (2.6/19)

mm (in.)

End play

0.27–0.86 

(0.0106–0.0339)

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–195

246RY00001

252RY00003

244RY00001

246RY00001

25. Snap ring

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

Check piston stroke of overdrive brake

Place a dial indicator onto the overdrive brake piston as
shown in the figure.

Measure the stroke by applying and releasing the
compressed air (4–8kg/cm

2

, 57–114–psi or 392–785 kPa)

as shown in the figure.

If the values are nonstandard, select another flange.

Remove the snap ring.

Snap ring (Reference) 

mm (in.)

Inside diameter

167.9 (6.61)

mm (in.)

Piston stroke

1.40–1.70 

(0.0551–0.0670)

Available Flange size

 mm(in.)

3.3 (0.130)

3.8 (0.150)

3.5 (0.138)

3.9 (0.154)

3.6 (0.142)

4.0 (0.158)

3.7 (0.146)

7A–196

AUTOMATIC TRANSMISSION (AW30-40LE)

246RY00026

252RY00010

252RY00002

252RY00011

Remove two flanges, three plates and four discs.

26. Bearing and race

Coat the bearing and races with petroleum jelly and install
them onto the overdrive support.

27. OD planetary ring gear

Install the overdrive planetary ring gear.

28. Bearing and race

Coat the bearing and race with petroleum jelly and install
them onto the planetary ring gear.

Bearing and races diameter (Reference)

 mm (in.)

Inside

Outside

Bearing 

36.5 (1.437)

48.5 (1.910)

Race (Front)

37.2 (1.465)

58.8 (2.315)

Race (Rear)

33.7 (1.327)

50.1 (1.973)

Bearing and race diameter (Reference) 

mm (in.)

Inside

Outside

Bearing

26.0 (1.024)

46.8 (1.843)

Race

24.2 (0.953)

47.8 (1.882)