clutch ISUZU KB P190 2007 Workshop Owner's Manual

4C1-54 FRONT WHEEL DRIVE



Important Operations
1. Bolt
Before removal, shift transfer lever into “2H” position and set
free wheeling hub knob into “FREE” position.



6. Hub nut
W rench : 5-8840-2 117-0




7. Hub and disc assembly
Before disassembly, remove the disc brake caliper assembly
and hang it on the frame with wires.
Refer to Section “Brake” for disc brake caliper removal
procedure.



14. Clutch Assembly
W hile pushing follower knob, turn clutch assembly clockwise
and then remove clutch assembly from knob.





19. Retaining Spring
Remove retaining spring from clutch assembly by turning it
counterclockwise.


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ISUZU KB P190 2007

4C1-56 FRONT WHEEL DRIVE
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear, damage or any other abnormal conditions are found
through inspection.
For inspection and servicing of disc caliper, and relative parts, and ABS parts, refer to Section Brakes.



• Hub
• Hub bearing, oil seal
• Knuckle spindle
• Disc
• Caliper
• ABS sensor rotor
• Cap, Hub flange, Shim, Snap ring
• Free wheeling hub parts (Option)
• Clutch, Knob, follower, inner, ring and
spring


Visual Check
Check the following parts for wear, damage or other abnormal
conditions.



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FRONT WHEEL DRIVE 4C1-57
REASSEMBLY


RTW 440LF00040 1


Reassembly Steps

1 . Spacer
2. Ring
3. Snap ring

4. Inner assembly
5. Snap ring
6. X-ring

7. Knob

8. Snap ring

9. Retaining spring

1 0. Follower

11 . Compression spring

1 2. Clutch assembly




1 3. W heel pin

1 4. Bolt

1 5. ABS sensor rotor

1 6. Inner bearing

1 7. Oil seal

1 8. Outer bearing

1 9. Hub and disc assembly

20. Hub nut

21. Lock washer

22. Body assembly

23. Snap ring and shim

24. Cover assembly

25. Bolt



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ISUZU KB P190 2007

4C1-58 FRONT WHEEL DRIVE





Important Operations
1. Spacer
Apply grease to both faces of spacer.
4. Inner Assembly
Apply grease wheel bearing to inside face of ring.
g(oz)

Amount of grease 6 (0.21)



7. Knob
( 1 ) Apply grease W heel bearing to outer circumference of knob
and inner circumference of cover.
(2) Align detent ball to either groove of cover.





8. Snap Ring
Turn the smoother face to knob side.
9. Retaining Spring
Align the end of spring to the end of cut portion of clutch spring
groove.




10. Follower
Install follower to clutch so that follower nail will come closer to
the bent portion of retaining spring by aligning follower stopper
nail to outer teeth of clutch. Then, hook retaining spring onto
upper portion of hanger nails of follower.





11. Compression Spring
Turn the smaller diameter side to follower.
12. Clutch Assembly
Align follower nail to handle groove, and then assemble clutch
with knob by pushing and turning clutch counterclockwise to
knob.


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ISUZU KB P190 2007

4C2-4 SHIFT ON THE FLY SYSTEM
SHIFT ON THE FLY SYSTEM AND ASSOCIATION PARTS








RTW 440LF000701
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.


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ISUZU KB P190 2007

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





412RW 017
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.





412RW 016
12.Snap Ring
Remove snap ring from inner shaft by using a snap ring pliers.





412RW 015
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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ISUZU KB P190 2007

SHIFT ON THE FLY SYSTEM 4C2-7















412RS026
Inner Shaft Run-Out
W ith both end centers supported, rotate the shaft slowly
and measure deflection with a dial gauge.
Inner Shaft Run-Out (Limit) mm (in)
0.5 (0.02)
NOTE:
Do not heat the shaft to correct its bend.






RTW 440SH000101
Inner Shaft Bearing
Inspect the state of inner shaft bearing. If any abnormality
such as smooth less is found, replace with a new inner
shaft bearing.
Insert a clutch gear and check the state of needle bearing.
If there is an abnormality such as smooth less, replace the
needle bearing.

Sleeve
Visual Check
Check and see that there is not wear, damage, or checking
in the sleeve.
NOTE:
Close inspection of the groove and inner gear are required
because those are important parts.











412RW 011
Functional Check
Operate the sleeve with the inner shaft combined with the
clutch gear.
If smooth less is felt, replace the sleeve.
NOTE:
Gear oil should be applied to the contact surface of gear.






412RW 022
Dimensional Check
Check the width of sleeve center groove.
Sleeve Center Groove (Limit) mm (in)
7.1 (0.28)

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ISUZU KB P190 2007

4C2-8 SHIFT ON THE FLY SYSTEM




RTW 440SH000201
Clutch Gear
Visual Check
Check and see the there is not wear, damage, crack, o
r
any other abnormality in the clutch gear.
Functional Check
If there is an abnormality such as smooth less when
operated in combination with sleeve, replace the clutch
gear.
NOTE:
When inspection, gear oil should be applied to the contact
surface of gear.





RTW 440SH000301
Dimensional Check
Make sure of the size illustrated.
Clutch Gear Out Side Diameter (Limit) mm (in)
36.98 (1.46)




RTW 440SH000501




RTW 440SH000401
Actuator
Visual Check
Check and see that there is no damage, cracking, or othe
r
abnormality.
Functional Check
Make sure of function with voltage (12V) applied to
terminal
3, 4 and set the tester to terminal 1, 2 in
accordance with the table below.

State Port 3Port 4Port 1, 2
Conducting Function
A
+ −
−−
−
C
B −
−−
−
+ × D
If there is an abnormality, replace the actuator as an
assembly.
NOTE:
Be careful not to permit the entry of water or dust into the ports
of the actuator.
Do not open the actuator cover, if the actuator will be reused.

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ISUZU KB P190 2007

4C2-10 SHIFT ON THE FLY SYSTEM



412RS044





















13. Inner Shaft Bearing
• Place a new snap ring in inner shaft.
• Force a new inner shaft bearing into the inner shaft.
Installer : 5-8840-2197-0


12. Snap Ring
NOTE;
Be careful not to damage the inner shaft.

11.inner Shaft • Clean the housing contact surface of the front axle
case.
• Insert inner shaft assembly into the front axle case.
NOTE:
Be careful not to damage oil seal.






412RW 017
10. Snap Ring
Install snap ring in the groove of front axle case.
NOTE:
Be sure to install the snap ring properly.


9. Clutch Gear Apply differential gear oil to clutch oil.
8. Sleeve Apply differential gear oil to sleeve.






412RW 023


7. Housing
• Clean contact surface with the front axle and actuato
r
mounting surface.
•
Apply liquid gasket to the contact surface on the front
axle case and install in the housing.

6. Bolt
Tighten bolts to specified tightening torque.
Housing Bolt Torque N⋅m (kgf ⋅m/lb ⋅ft)
75 (7.6/55)

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ISUZU KB P190 2007

BRAKE CONTROL SYSTEM 5A-45
Braking Sound (From EHCU) Is Heard While Not Braking

Step Action Value(s) Yes No
1 Is this the first vehicle start after engine start?
- It is self
checking sound
Normal. Go to Step 2
2 Is vehicle speed at 15 km/h or 30 km/h?
- It is self
checking sound
Normal. Go to Step 3
3 Check for the following condition: • At the time of shift down or clutch operation.
• At the time of low road friction drive (ice or snow on road) or rough road drive.
• At the time of high-speed turn.
• At the time of passing curb.
• At the time of operating electrical equipment switches.
• At the time of racing the engine. Did it occur under any of the conditions above? - ABS may
sometimes be
actuated even when brake pedal is not applied. Go to Step 4
4 Is there play in each or any sensor/wheel speed sensor rotor? - Repair.
Go to Step 7 Go to Step 5
5 Damage or powdered iron sticking to each or any sensor/wheel speed sensor rotor? - Repair.
Go to Step 7 Go to Step 6
6 Is each sensor normal? Note: Check the EHCU type for specification, the
EHCU is replaced.
(Specification; 2W D or 4W D Model)

- Check
harness/
connector for suspected
disconnection
If no
disconnection is found,
replace EHCU
Go to Step 7 Repair.
Go to Step 7
7 Reconnect all components, ensure all components are properly mounted.
Is this step finished? - Repeat the
“Basic
diagnostic
flow chart” Go to Step 7


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ISUZU KB P190 2007