Isuzu KB P190. Manual — part 145

4C2-2 SHIFT ON THE FLY SYSTEM

SHIFT ON THE FLY SYSTEM

Outline of Shift on The Fly System

The shift on the fly system switches between 2 wheel
drive (2WD) and 4 wheel drive (4WD) electrically by
driver's pressing the 4WD switch (push button type) on
instrument panel.

This system controls below operations.

1. Shifting the transfer front output gear (Connecting to,

and disconnecting from, front propeller shaft by

motor actuator).

2. Retrial of shifting the transfer front output gear.

3. Connecting front wheels to, and disconnecting them

from, the front axles by axle motor actuator.

4. Indicator on instrument panel.

5. 4WD out signal to other Electronic Hydraulic Control

Unit.

System Diagrams

RUW34BLF000201

SHIFT ON THE FLY SYSTEM 4C2-3

SHIFT ON THE FLY ELECTRICAL EQUIPMENT

Axle Shaft Connection and Disconnection

RUW34BMF000101

Actuator Assembly

412RY00004

4C2-4 SHIFT ON THE FLY SYSTEM

SHIFT ON THE FLY SYSTEM AND ASSOCIATION PARTS

RTW440LF000701

Disassembly steps

1. Filler plug
2. Bolt
3. Front axle drive shaft (LH side)
4. Bolt
5. Actuator assembly
6. Bolt
7. Housing
8. Sleeve
9. Clutch gear
10. Snap ring
11. Inner shaft
12. Snap ring
13. Inner shaft bearing
14. Needing bearing
15. Oil seal

Reassembly steps

To reassemble, follow the disassembly steps in
the reverse order.

SHIFT ON THE FLY SYSTEM 4C2-5

Disassembly

1. Filler Plug

Remove filler plug and packing and drain oil.

2. Bolt

Loosen mounting bracket fitting bolts and remove front axle

drive shaft from front axle case.

3. Front Axle Drive Shaft (LH side)

4. Bolt

Loosen actuator ASM fitting bolts.

5. Actuator Assembly

Draw out actuator ASM.

6. Bolt

Remove hosing fitting bolts.

7. Housing

8. Sleeve

9. Clutch Gear

412RW017

10. Snap Ring

Remove snap ring from front axle case by using a snap ring

pliers.

11.Inner Shaft

Take out inner shaft from front axle case.

412RW016

12.Snap Ring

Remove snap ring from inner shaft by using a snap ring

pliers.

412RW015

13.Inner Shaft Bearing

Remove inner shaft bearing by using a special tool and

press.

Remover : 5-8840-2197-0

NOTE:

Be careful not to damage the shaft.