Isuzu Trooper (1998-2002 year). Manual - part 687

7A–40

AUTOMATIC TRANSMISSION (4L30–E)

Solenoid (Adapter Case Valve Body)

Removal

1. Raise the vehicle and support it on jack stands.
2. Disconnect  battery ground cable.
3. Drain fluid.
4. Remove adapter case oil pan twelve fixing 10 mm

screws, adapter case oil pan, and gasket.

NOTE: Oil pan still contains transmission fluid. Place a
large drain container under the oil pan and drain the fluid
carefully.

5. Disconnect wiring harness from force motor solenoid

and converter clutch PWM solenoid. Pull only on
connectors, not on wiring harness.

6. Remove 11 mm bolt, bracket and converter clutch

PWM solenoid with two O–rings.

210RY001

7. Remove 11 mm bolt, retainer, and force motor

solenoid.

210RW009

Installation

1. Install force motor solenoid, retainer, and 11 mm bolt

to adapter case valve body. Tighten the bolt to the
specified torque.

Torque: 10  N

•

m (1.0 kg·m/87 Ib in)

2. Install converter clutch PWM solenoid with two O–

rings, bracket, and 11 mm bolt to adapter case valve
body. Tighten the bolt to the specified torque.

Torque : 10 N

•

m (1.0 kg·m/87 Ib in)

3. Connect wiring harness assembly to solenoids.
4. Install adapter case oil pan, new gasket, and twelve

10 mm screws. Tighten the screws to the specified
torque.

Torque : 11 N

•

m (1.1 kg·m/96 Ib in)

5. Fill transmission through overfill screw hole oil pan,

using ATF DEXRON



–III. Refer to Changing

Transmission Fluid in this section.

6. Connect battery ground cable.

7A–41

AUTOMATIC TRANSMISSION (4L30–E)

Valve Body Assembly (Main Case)

Removal

1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Remove transfer protector (4

×

4).

4. Drain fluid.
5. Support transfer case with a jack and remove third

crossmember.

6. Remove sixteen 10 mm screws, main case oil pan,

magnet and gasket.

7. Remove three 13 mm oil filter fixing screws, then

remove oil filter.

8. Remove two 13 mm manual detent fixing screws,

then remove roller and spring assembly.

9. Disconnect wiring harness from band control

solenoid and shift solenoids. Pull only on connectors,
not on wiring harness.

10. Remove four 13 mm servo cover fixing screws, then

remove servo cover and gasket.

11. Remove seven 13 mm valve body fixing screws.

12. Remove main case valve body with manual valve link

and transfer plate. Note the position of the link (long
end into valve, short end into range selector lever).

13. Remove transfer plate gasket from main case.
14. Remove two check balls from main case.

Installation

1. Install two check balls to main case.

244RW002

2. Inspect electrical 7 way connector and seal of main

case. Replace if necessary.

3. Use two 5–8840–0022–0 (J–25025–B) guide pin to

install main case.

D

Install valve body assembly and manual valve link.

NOTE: Valve must be extended as the short end of
manual valve link is connected to the range selector lever.
Long end of link goes into valve.

4. Install seven 13 mm screws, and tighten them to the

specified torque.

Torque: 20 N

•

m (2.0 kg·m/15 Ib ft)

243RS008

5. Remove two guide pins from main case.
6. Install servo cover gasket, cover, and four 13 mm

screws.  Tighten the screws to the specified torque.

Torque: 25 N

•

m (2.6 kg·m/18 Ib ft)

7. Connect wiring harness to band control and shift

solenoids.

8. Install roller and spring assembly to manual detent.

D

Install two 13 mm screws, and tighten them to the
specified torque.

Torque: 20 N

•

m (2.0 kg·m/15 Ib ft)

9. Install oil filter and three 13 mm screws. Tighten the

screws to the specified torque.

Torque : 20 N

•

m (2.0 kg·m/15 Ib ft)

10. Install oil pan gasket, magnet, oil pan and sixteen 10

mm screws. Tighten the screws to the specified
torque.

Torque: 11 N

•

m (1.1 kg·m/96 Ib in)

11. Install third crossmember and rear mount. Tighten the

bolts and nuts to the specified torque.

Torque

Third crossmember bolt: 76 N

•

m

(7.8 kg·m/56 Ib ft)

Rear mount nut: 50 N

•

m (5.1 kg·m/37 Ib ft)

12. Install transfer protector. Tighten the bolts to the

specified torque.

Torque: 37 N

•

m (3.8 kg·m/27 Ib ft)

13. Fill transmission through overfill screw hole of oil pan,

using ATF DEXRON



–III. Refer to Changing

Transmission Fluid in this section.

14. Connect  battery ground cable.

7A–42

AUTOMATIC TRANSMISSION (4L30–E)

Valve Body Assembly (Adapter Case)

Removal

1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Drain fluid.
4. Remove twelve 10 mm adapter case oil pan fixing

screws, adapter case oil pan, and gasket. 

NOTE: Oil pan still contains transmission fluid. Place a
large drain container under the oil pan.
Drain the fluid carefully.

5. Disconnect wiring harness from force motor solenoid

and converter clutch solenoid. Pull only on
connectors, not on wiring harness. 

6. Remove seven 13 mm screws from adapter case

valve body assembly, then remove  transfer plate, two
gaskets, and adapter case valve body.

Installation

1. Inspect electrical 4 way connector and seal of adapter

case. Replace if necessary.

2. Install gasket, transfer plate, and gasket.
3. Install adapter case valve body and seven 13 mm

screws. Tighten the screws to the specified torque.

Torque: 20 N

•

m (2.0 kg·m/15 Ib ft)

4. Connect wiring harness assembly to converter clutch

solenoid and force motor.

5. Install oil pan gasket, oil pan, and twelve 10 mm

screws. Tighten the screws to the specified torque.

Torque: 11 N

•

m (1.1 kg·m/96 Ib in)

6. Fill transmission through the overfill screw hole of oil

pan, using ATF DEXRON



–III. Refer to Changing

Transmission Fluid in this section.

7. Connect battery ground cable.

Powertrain Control Module (PCM)

Removal

1. Disconnect battery ground cable.
2. Disconnect PCM wiring harness connectors from

PCM.

3. Remove PCM from bracket.

LHD

828R200006

RHD

828R200007

Installation

1. Install PCM to bracket.
2. Connect PCM wiring harness connectors to PCM.
3. Connect battery ground cable.

7A–43

AUTOMATIC TRANSMISSION (4L30–E)

Speed Sensor (Extension Housing)

Removal

1. Disconnect  battery ground cable.
2. Remove front console.
3. Remove selector lever assembly.
4. Disconnect speed sensor harness connector from

speed sensor.

5. Remove one 10 mm screw and speed sensor with

O–ring.

241RW007

Installation

1. Inspect the speed sensor O–ring, and replace it if

necessary.

2. Install speed sensor assembly and 10 mm screw.

Torque: 9 N

•

m (0.9 kg·m/78 Ib in)

3. Connect speed sensor harness connector to speed

sensor.

4. Install selector lever assembly.

D

Adjust shift lock cable. Refer to Selector Lever in
this section.

5. Install front console.
6. Connect  battery ground cable.