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.
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