Page 414 of 6020
3E-10 WHEELS AND TIRES
TROUBLESHOOTING
Typical examples of abnormal tire tread wear and major causes :
CAUTION:
Similar wear patterns can be caused by worn suspension parts, misalignment of wheels and tires, and
other suspension related problems.
Spotty wear - wear localized
on shoulder section. In
extreme cases, the tire
becomes polygonal in shape.
Tire or wheel out of
round or distorted. Hub or knuckle out
of round or distorted. Play in hub bearings
or ball joints. Rotating parts out of
balance.
Tread wear one-sided.
Rotating parts out of
balance. Tire or wheel out of
round. Hub or knuckle out
of round or distorted.
Localized tread wear.
Once spotty wear develops in
tread due to hard braking or
abrupt starting, localized wear
tends to be accelerated.
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ISUZU KB P190 2007
Page 517 of 6020

FRONT WHEEL DRIVE 4C1-13
NOTE :
Adjust the buffer clearance before tighten the bolts and nuts of
the lower control arm.
6. Install the breather hose of the front axle.
7. Install the actuator connector of the shift on the fly.
8. Install the tie-rod end of the power steering unit to the knuckle, tighten the nut to the specified torque.
Torque : 98 N·m (10.0kgf·m/73 lb·ft)
9. Install lower bolts and nuts of the shock absorber, tighten it to the specified torque.
Torque : 93 N·m (9.5kgf·m/69 lb·ft)
10. Install lower nuts of the stabilizer link, tighten it to the specified torque.
Torque : 50 N·m (5.1kgf·m/37 lb·ft)
11. Install the suspension crossmember.
12. Install the torsion bar.
Refer to Torsion Bar in Suspension section.
13. Install the front propeller shaft.
Refer to Front Propeller Shaft in this section.
14. Install the hub and disc assembly and adjust the bearing preload.
Refer to Front Hub and Disc in this section.
15. Install the wheel speed sensor of the antilock brake system.
16. Install the brake caliper. Tighten the bolt of the caliper bracket to the specified torque.
Torque : 226 N·m (23.0kgf·m/166 lb·ft)
17. Install the stone guard.
18. Install the tire and wheel.
19. Lower the vehicle, adjust the trim height.
Refer to Trim Height Adjustment in Front Alignment section.
20. Tighten the bolts and nuts of the lower control arm to the specified torque.
Refer to Lower Control Arm in Suspension section.
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ISUZU KB P190 2007
Page 532 of 6020
4C1-28 FRONT WHEEL DRIVE
5. Cross Pin
(1) Be sure to install the cross pin so that it is in alignment with the lock pin hole in the differential cage.
(2) Adjust the backlash between the side gear and the pinion
gear. mm(in)
Backlash 0.10 - 0.20 (0.004 - 0.008)
Thickness of thrust washers available
mm(in)
1.00, 1.05, 1.10 (0.039, 0.041, 0.043)
6. Lock Pin
After lock pin installation, stake the cage to prevent discharge
of the lock pin.
7. Ring Gear
W hen installing the ring gear, apply LOCTITE 271 or
equivalent to the threaded hole and bolt.
8. Bolt
Tighten the bolts in diagonal sequence as illustrated.
Bolt Torque N⋅m (kgf ⋅m/lb ⋅ft)
108 (11.0/80)
Note :
Discard used bolts and install new ones.
Note that all bolts have a left hand thread.
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ISUZU KB P190 2007
Page 556 of 6020

4C1-52 FRONT WHEEL DRIVE
Preload Adjustment
Tighten the hub nut at 29.4 N⋅m (3 kgf ⋅m / 2 1.7 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 1
4 - 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)
RTW 440SH00090 1
13. Bolt
Torque N ⋅m (kgf ⋅m/lb ⋅ft
)
59 (6.0 / 43)
• Refer to SECTION 3E “W HEELS AND TIRES” for wheel
install procedure.
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ISUZU KB P190 2007
Page 565 of 6020

FRONT WHEEL DRIVE 4C1-61
Preload Adjustment
Tighten the hub nut at 29 N⋅m (3.0 kgf ⋅m / 22 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 1
4 - 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.
21. 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.
22. Body Assembly
Apply adhesive (Loctite 5 15 or equivalent) to the both joining
faces.
23. Snap Ring and Shims
Adjust the clearance between the free wheeling hub body and
the snap ring.
Clearance mm(in) 0 - 0.2 (0 - 0.08)
Adjust Shims Available mm(in)
0.2, 0.3, 0.5, 1.0
(0.008, 0.0 11, 0.020, 0.039)
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ISUZU KB P190 2007
Page 568 of 6020
4C1-64 FRONT WHEEL DRIVE
4× 2 Model
1. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preload
Too tight
NG
Adjust the front alignment
Front alignment
Incorrect
Steering unit
Tighten or replace
Loose or worn
NG
NG
Suspension
Tighten or replace
Replace or adjust the inflation
Front or rear suspension parts
loose or broken
Tire
W orn or improperly inflated
OK NG
NG
OK
OK
OK
W heel bearing preload
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ISUZU KB P190 2007
Page 569 of 6020
FRONT WHEEL DRIVE 4C1-65
2. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Replace the ball joint or bush
Worn
Front alignment
Adjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OK NG
NG
NG
OK
W heel bearing
Tighten or replace
Loose or worn
NG
Shock absorber
Replace the shock absorber
Worn
Tire
Replace or adjust the inflation
W orn or improperly inflated
OK
NG
NG
OK
Steering unit
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ISUZU KB P190 2007
Page 572 of 6020
4C1-68 FRONT WHEEL DRIVE
5. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preload
Too tight
NG
Adjust the front alignment
Front alignment
Incorrect
Tighten or replace
Steering unit
Loose or worn
NG
NG
OK
OK
Tighten or replace
Replace or adjust the inflation
Suspension
Front or rear suspension parts
loose or broken
Tire
W orn or improperly inflated
NG
NG
OK
OK
W heel bearing preload
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ISUZU KB P190 2007