ISUZU TROOPER 1998 Service Repair Manual

4D1±10
TRANSFER CASE (STANDARD TYPE)
Installation
To install, follow the removal steps in the reverse order,
noting the following points:
1. Apply a thin coat of molybdenum disulfide grease to
the input shaft spline and install the transter case
assembly to the vehicle.
260RW001
2. Tighten the transmission±transfer bolts and the nut
(M/T) to the specified torque.
Torque: 46 N´m (4.7kg´m/34 lb ft)
3. Tighten the propeller shaft bolts to the specified
torque.
Torque: 63 N´m (6.4kg´m/46 lb ft)
4. Tighten the transfer protector bolts to the specified
torque.
Torque: 37 N´m (3.8kg´m/27 lb ft)
256RW030

TRANSFER CASE (STANDARD TYPE)
4D1±11
Transfer Rear Cover Assembly (4WD Switch Model)
Transfer Rear Cover Assembly and Associated Parts
220RW102
Legend
(1) Speedometer Sensor, Speedometer Driven
Gear and Plate
(2) Front Companion Flange
(3) Rear Companion Flange(4) Control Box Assembly
(5) 2WD±4WD Actuator Heat Protector
(6) 2WD±4WD Actuator Assembly
(7) Transfer Rear Cover Assembly
(8) Transfer Case Assembly

4D1±12
TRANSFER CASE (STANDARD TYPE)
Removal
1. Remove the speedometer sensor.
2. Remove the plate.
3. Remove the speedometer driven gear bushing and
driven gear.
NOTE: Apply a reference mark to the driven gear bushing
before removal.
4. Remove the front companion flange and the rear
companion flange, using the flange companion holder
5±8840±0133±0 (J±8614±11) to remove the end
nuts.
262RW067
NOTE: U s e a u n i v e r s a l p u l l e r t o remove the rear
companion flange.
5. Disconnect the actuator breather hose and the
transfer breather hose from the control box.
6. Remove the control box assembly.
7. Disconnect the actuator breather hose and remove
the 2WD±4WD actuator heat protector from the
2WD±4WD actuator assembly.
220RW085
8. Remove the 2WD±4WD actuator assembly bolts.
9. Pull the 2WD±4WD actuator assembly with
2WD±4WD shift rod.
220RW027
Legend
(1) Shift Rod: 2WD±4WD (Position: 2WD)
(2) 2WD±4WD Actuator Assembly
(3) Pull Cover
(4) Rear Cover Assembly
(5) Position: 4WD
(6) Mode: 2WD

TRANSFER CASE (STANDARD TYPE)
4D1±13
10. Offset the actuator assembly.
220RW028
11. Remove the actuator assembly.
220RW029
Legend
(7) Position: 4WD
(8) Mode: 2WD
12. Remove the transfer rear cover assembly from the
transfer case assembly.
Installation
1. Apply the recommended liquid gasket (LOCTITE
17430) or its equivalent to the transfer rear cover
fitting faces.
220RS017
2. Install the transfer rear cover assembly to the transfer
case assembly.
3. Perform the following steps before fitting the transfer
rear case:
1. Shift the high±low shift rod to the 4H side.
2. The cut±away portion of the select rod head (9)
should align with that of the rear case hole's
stopper (10).
230RW004
4. Tighten the transfer rear case bolts to the specified
torque.
Torque: 37 N´m (3.8kg´m/27 lb ft)
5. Shift the 2WD±4WD shift rod (11) to the 4WD side.

4D1±14
TRANSFER CASE (STANDARD TYPE)
6. Join the rod grooves of 2WD±4WD actuator
assembly (12) and shift rod (11).
220RW030
Legend
(11) Shift Rod: 2WD±4WD (Position: 4WD)
(12) 2WD±4WD Actuator Assembly (Mode: 2WD)
(13) Rear Cover Assembly
7. Push the 2WD±4WD actuator assembly (12) with
2WD±4WD shift rod (11) till the shift rod (11) reaches
the 2WD position.
220RW031
Legend
(14) Position: 2WD
(15) Mode: 2WD
8. Tighten the 2WD±4WD actuator bolts to the specified
torque.
Torque: 19 N´m (1.9kg´m/14 lb ft)
9. Install the actuator heat protector.
10. Connect the actuator breather hose to the actuator.11. Install the control box assembly.
Torque: 19 N´m (1.9kg´m/14 lb ft)
12. Connect the breather hoses to the control box.
13. Install the rear companion flange and front
companion flange, using the companion flange holder
5±8840±0133±0 (J±8614±11) to tighten the flange
nuts to the transfer case.
262RW067
14. Tighten the new transfer flange nuts to the specified
torque.
Torque
Rear companion flange: 167 N´m (17.0kg´m/123
lb ft)
Front companion flange: 137 N´m (14.0kg´m/101
lb ft)
15. Use the punch 5±8840±2293±0 (J±39209) to stake
the rear companion flange nut at two spots.
266RW027

TRANSFER CASE (STANDARD TYPE)
4D1±15
266RW002
16. Stake the front companion flange nut at one spot.
NOTE: Be sure to confirm that there is no crack at the
staked portion of the flange nut after staking.
17. Install the O±ring (8) to the speedometer driven gear
bushing (7).
18. Install the driven gear to the speedometer driven gear
bushing (7).
19. Install the speedometer driven gear assembly to the
transfer rear cover.20. Install the plate (6) to the transfer rear case and
tighten to the specified torque.
Torque: 15 N´m (1.5kg´m/11 lb ft)
21. Install the speedometer sensor and tighten to the
specified torque.
Torque: 27 N´m (2.8kg´m/20 lb ft)
225RW014

4D1±16
TRANSFER CASE (STANDARD TYPE)
Disassembly
226RW154
Legend
(1) Rear Output Shaft Assembly
(2) Rear Output Shaft
(3) Bearing Snap Ring
(4) Ball Bearing(5) Bearing Snap Ring
(6) Ball
(7) Speedometer Drive Gear
(8) Ball Bearing
(9) Transfer Rear Cover (with oil seal)
1. Remove the bearing snap ring (3), using a pair of snap
ring pliers.
226RS060

TRANSFER CASE (STANDARD TYPE)
4D1±17
2. Remove the rear output shaft assembly (1) from the
transfer rear cover (with oil seal).
3. Remove ball bearing (8), using a bench press and the
bearing remover 5±8840±0015±0 (J±22912±01) .
226RW186
4. Remove the speedometer drive gear (7).
5. Remove the ball (6).
6. Remove the bearing snap ring (5), using a pair of snap
ring pliers.
7. Remove the ball bearing (4) from the rear output
shaft, using a bench press and the bearing remover
5±8840±0015±0 (J±22912±01).
226RW187
Inspection and Repair
Refer to ªTRANSFER CASE ASSEMBLYº in this section
for inspection and repair.
Reassembly
1. Install transfer rear cover (with oil seal).
Oil seal replacement

Remove the oil seal from the transfer rear cover.

Apply engine oil to the oil seal outer surfaces.

Fill in recommended grease (BESCO L2) or
equivalent in the oil seal lip.

Use the oil seal installer 5±8840±2292±0 (J±39208)
to install the rear oil seal to the transfer rear cover.
220RW104
2. Set the snap ring (3), and install ball bearing (4) to the
rear output shaft (2), using the ball bearing installer
5±8840±2159±0 (J±37223) and the adapter
5±8840±2192±1 (J±37486±A).
262RW068

4D1±18
TRANSFER CASE (STANDARD TYPE)
3. Install the bearing snap ring (5).
4. Install the ball (6).
5. Install the speedometer drive gear (7).
226RS064
6. Install ball bearing (8), using the ball bearing installer
5±8840±2159±0 (J±37223).
226RW188
7. Install the rear output shaft assembly (1) to the
transfer rear cover.
8. Install the bearing snap ring (3).
NOTE: The snap ring must be fully inserted into the
transfer rear case snap ring groove.

TRANSFER CASE (STANDARD TYPE)
4D1±19
Transfer Rear Cover Assembly (Except 4WD Switch Model)
Transfer Rear Cover Assembly and Associated Parts
220RW116
Legend
(1) Speedometer Sensor, Speedometer Driven
Gear and Plate
(2) Front Companion Flange(3) Rear Companion Flange
(4) Control Box Assembly
(5) Transfer Rear Cover Assembly
(6) Transfer Case Assembly