Isuzu KB P190. Manual - part 139

4C1-52  FRONT WHEEL DRIVE 

 

 

 

 

Preload Adjustment 

Tighten the hub nut at 29.4 N

⋅m (3 kgf⋅m / 21.7 lb·ft), then 

loosen the nut to the full. 

Tighten the hub nut at the value given below, using a spring 
scale on the wheel pin. 

Bearing Preload 

N (kgf/lb)

 

New bearing and New oil seal 

22 - 27  

(2.2 - 2.8 / 4.9 - 6.2) 

Used bearing and New oil seal 

14 - 20  

(

1.4 - 2.0 / 3.1 - 4.5) 

If the measured bearing preload is outside the specifications, 
adjust it by loosening or tightening the bearing nut. 

 

 

 

 

 
 

9. Lock Washer 
Turn the side with larger diameter of the tapered bore to the 
vehicle outer side, and attach the washer. 

If the bolt holes in the lock plate are not aligned with the 
corresponding holes in the nut, reverse the lock plate. 

If the bolt holes are still out of alignment, turn in the nut just 
enough to obtain alignment,.  Screw is to be fastened tightly so 
its head may come lower than the surface of the washer. 

10. Flange (4×4 model only) 
Apply adhesive (LOCTITE 5

15 or equivalent) to both joining 

flange faces then install hub flange. 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 

11. Snap ring, shims (4×4 model only) 
Adjust the clearance between the flange and the snap ring. 

Clearance mm(in)

0 - 0.2 (0 - 0.008) 

Adjust shims available 

mm(in)

0.2, 0.3, 0.5, 

1.0 

(0.008, 0.0

12, 0.020, 0.039) 

 

 

   

 

RTW440SH00090

1 

13. Bolt 
Torque N

⋅m (kgf⋅m/lb⋅ft)

59 (6.0 / 43) 

•  Refer to SECTION 3E “WHEELS AND TIRES” for wheel

install procedure. 

 

 

 

FRONT WHEEL DRIVE  4C1-53 

FRONT HUB AND DISC  

(4

××××4 Manual Locking Hub Model) 

  DISASSEMBLY 

Refer to SECTION 3E “WHEELS AND TIRES” for wheel removal procedure 

 

 

 

 

RTW440LF00030

1 

 

Disassembly Steps 

▲  1. Bolt 
 

2. Cover assembly 

 

3. Snap ring and shim 

 

4. Body assembly 

 

5. Lock washer 

▲  6. Hub nut 

▲  7. Hub and disc assembly 
 

8. Outer bearing 

 

9. Oil seal 

 

10. Inner bearing 

 

11. ABS sensor rotor 

▲ 12. Bolt 

▲ 13. Wheel pin 
 

 

 

▲ 14. Clutch assembly 
 

15. Snap ring 

 

16. Knob 

 

17. Compression spring 

 

18. Follower 

▲ 19. Retaining spring 
 20. 

X-ring 

  2

1. Snap ring 

  22. Inner assembly 
  23. Snap ring 
 24. 

Ring 

 25. 

Spacer 

 

 

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  

Wrench : 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 
While 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. 

 

FRONT WHEEL DRIVE  4C1-55 

 

 

 

 
 

12. Bolt 

13. Wheel Pin ; Front Hub 

(

1) Scribe mark on hub to disc before disassembly to insure

proper assembly. 

(2) Drive out the ABS sensor rotor using a metal bar and 

hammer through the two bolt holes. 
•  Discard the used ABS sensor rotor 

 

Refer to the section Brake. 

 

 

 

 

 
 

(3) Clamp hub and disc assembly in vise using protective pads

and remove six (6) disc to hub retaining bolts. 

 

 

 

 
 

(4) Place hub on a suitable work surface and remove wheel 

studs, as required, using a hammer.