height ISUZU KB P190 2007 Workshop User Guide

3C-12 FRONT SUSPENSION
4. Install link nut, then tighten it to the specified
torque.
Torque: 50 N ⋅
⋅⋅
⋅
m (5.1 kgf ⋅
⋅⋅
⋅
m/37 lb ⋅ft)
5. Tighten the cam bolt and lower control arm nut, setting it to the interim torque, then turn the cam
bolt to the setting mark applied during
disassembly.
6. Install ball joint nut, then tighten it to the specified torque with just enough additional torque to align
cotter pin holes. Install new cotter pin.
Torque: 147 N ⋅
⋅⋅
⋅
m (15.0 kgf ⋅
⋅⋅
⋅
m/108 lb ⋅ft)

NOTE: Check the trim height. Refer to Front Alignment
Inspection and Adjustment.

7. Lower control arm nut tightens it to the specified torque.
Buffer clearance: 25.9 mm (1.02 in)
Torque: 186 N ⋅
⋅⋅
⋅
m (19.0 kgf ⋅
⋅⋅
⋅
m/137 lb ⋅ft)

NOTE: Apply oil to the thread.
NOTE: Tighten the bolt and nut with the parts in the
position shown in the illustration below.



















RTW 53ASH000201
8. Install wheel and tire assembly. Refer to wheel in
this section.




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ISUZU KB P190 2007

3C-34 FRONT SUSPENSION
Torsion Bar
Torsion Bar and Associated Parts


RTW 340MF000501
Legend
(1) Adjust Bolt, End Piece and Seat
(2) Height Control Arm


(3) Torsion Bar


Removal
1. Raise the vehicle and support the frame with suitable safety stands.
2. Apply the setting marks (1) to the adjust bolt and end piece, then remove adjust bolt, end piece and
seat.









410RS004

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ISUZU KB P190 2007

FRONT SUSPENSION 3C-35
3. Apply the setting marks (2) to the height control
arm and torsion bar, then remove height control
arm.
NOTE: “Besco chassis grease” should be applied on
contact area of height control arm with frame.
(RH & LH Both side)






410RS005
4. Apply the setting marks (3) to the torsion bar and
lower control arm, and then remove torsion bar.



RTW 340SH000301

Inspection and Repair
Make necessary correction or replace parts if wear,
damage, corrosion or any other abnormal condition is
found through inspection.
Check the following parts:
• Torsion bar
• Height control arm
• Adjust bolt
• Rubber seat
Installation
1. Apply grease to the serrated portions, then install
torsion bar. Make sure the bars are on their correct
respective sides and align the setting marks (3).







410RS007




RTW 340SH000301


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ISUZU KB P190 2007

3C-36 FRONT SUSPENSION
2. Apply grease to the portion that fits into the bracket
then install height control arm and align the setting
marks (2).






410RS005
3. Apply grease to the bolt portion of the end piece
(4). Apply grease to the portion of the seat (5) that
fits into the bracket.






410RS008
4. Apply grease to the serrated portions.
5. Install adjust bolt and seat, then turn the adjust bolt to the setting mark (1) applied during disassembly.
NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering
section.







410RS004




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ISUZU KB P190 2007

3C-38 FRONT SUSPENSION
4. Remove the hub assembly. Refer to Front Hub
and Disk in this section.
5. Remove tie-rod end from the knuckle. Refer to Power Steering Unit in Steering section.
6. Remove the speed sensor from the knuckle.
7. Loosen torsion bar by height control arm adjust bolt, and then remove torsion bar. Refer to Torsion
Bar in this section.
8. Remove speed sensor harness.
9. Remove back plate.
10. Remove lower ball joint by using remover 5-8840- 2005-0.
CAUTION: Be careful not to damage the ball joint
boot.




901RW 271

11. Remove upper ball joint by using remover 5-8840-
2121-0.
CAUTION: Be careful not to damage the ball joint
boot.


901RW 272
12. Remove knuckle assembly.
13. Remove oil seal. If replacement required. (4×4 Model Only)
14. Remove washer. If replacement required. (4×4 Model Only)
15. Remove needle bearing by using remover 5-8840- 2000-0 and sliding hammer 5-8840-0019-0.
If replacement required. (4 ×4 Model Only)






(4 ×4 Model Only)
RTW 340SH00401


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ISUZU KB P190 2007

FRONT SUSPENSION 3C-39
Inspection and Repair
Make necessary correction or replace parts if wear,
damage, corrosion or any other abnormal condition is
found through inspection.
Check the following parts:
• Knuckle
• Thrust washer (4 ×4 Model Only)
Installation
1. Apply appropriate amount of multipurpose type
grease to the new bearing (Approx. 5 g (0.18 oz))
and install needle bearing by using installer 5-
8840-2128-0 and grip 5-8840-0007-0. (4 ×4 Model
Only)






(4 ×4 Model Only)
901RW 275
2. Apply multipurpose type grease to the thrust
washer, and install washer with chamfered side
facing knuckle. (4 ×4 Model Only)

3. Use a new oil seal, and apply multipurpose type
grease to the area surrounded by the lip (approx. 2
g (0.07 oz)). Then use installer 5-8840-2851-0 (2)
and grip 5-8840-0007-0 (1) to install oil seal. Afte
r
fitting the oil seal to the installer, drive it to the
knuckle using a hammer or bench press until the
tool front face contacts with the thrust washer.
(4 ×4 Model Only)





RTW 73CSH000101
4. Install knuckle assembly.
5. Install upper ball joint and tighten the nut to the specified torque, with just enough additional torque
to align cotter pin holes. Install new cotter pin.
Torque: 98 N ⋅
⋅⋅
⋅
m (10.0 kgf ⋅
⋅⋅
⋅
m/72 lb ⋅
⋅⋅
⋅
ft)
6. Install lower ball joint and tighten the nut to the specified torque, with just enough additional torque
to align cotter pin holes. Install new cotter pin.
Torque: 147 N ⋅
⋅⋅
⋅
m (15.0 kgf ⋅
⋅⋅
⋅
m/108 lb ⋅
⋅⋅
⋅
ft)
7. Install back plate.
8. Install speed sensor harness.
9. Install torsion bar; refer to Torsion Bar in this
section.
NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering.

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ISUZU KB P190 2007

FRONT SUSPENSION 3C-47
14. Install cam plate and nut then tighten lower link nut
finger-tight.
NOTE: Apply oil to the thread.
NOTE: Tighten the nut or bolt with the parts in the
position shown in the illustration below.
Buffer clearance: 29.7 mm (1.17 in)
Torque: 186 N ⋅
⋅⋅
⋅
m (19.0 kgf ⋅
⋅⋅
⋅
m/137 lb ⋅
⋅⋅
⋅
ft)
NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering
section.







RTW 53ASH000301



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ISUZU KB P190 2007

3C-54 FRONT SUSPENSION
TROUBLESHOOTING
1. VIBRATION, SHOCK, AND SHIMMY OF STEERING WHEEL
Checkpoint Problem Countermeasure



Check front axle


Check wheel alignment


Check suspension ball joint


Check shock absorber or
attaching nut and bolt


Replace


Adjust


Replace


Replace or retighten


Check steering unit and
linkage


Faulty


Worn


Malfunction or loose


Check upper and lower link
bushings
Replace


Adjust


Worn


Incorrect

OK
OK
OK
NG
NG
NG
NG
NG
NG
OK
OK
Check vehicle trim height



• Improperly adjusted or worn front
wheel bearing.
• W orn or incorrectly adjusted wheel
bearing.
Replace; refer to Section 4C "Front
Wheel Drive"

• Insufficiently tightened steering
gear housing.
• W ear of steering linkage.
• Excessive backlash due to
improper adjustment of the steering
gear box.
• W orn column bearing, weakened
column bearing spring, or loose
clamp.
Replace; refer to Section 3B
"Steering"
• Improper tire pressure.
• Imbalance and deformation of frond
wheel.
• Unevenly worn tire or insufficient
tightening of wheel nuts.
Replace; refer to Section 3E "Wheel
and Tires"



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ISUZU KB P190 2007

FRONT SUSPENSION 3C-55
2. VEHICLE PULLS TO RIGHT OR LEFT
Checkpoint Problem Countermeasure



Steering linkage, and upper
and lower link


Rubber bushing for upper and
lower link


W heel alignment


Vehicle trim height


Replace


Replace


Adjust


Adjust


Deformed


Worn


Incorrect


Incorrect


Brake adjustment (binding)

Adjust


Replace


Incorrect

Collapsed or break (4 ×2
Except high ride suspension)
Collapsed or twisted (4 ×4, 4 ×2
High ride suspension)
Continued on the next page OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
OK
OK Coil spring (4
×2 Except high
ride suspension)
Torsion bar (4 ×4, 4 ×2 High
ride suspension)

Front wheel bearing

Adjust or replace

Incorrect adjustment or
abrasion

NG



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ISUZU KB P190 2007

FRONT SUSPENSION 3C-57
3. INSTABILITY OF VEHICLE
Checkpoint Problem Countermeasure



Tire pressure


W heel alignment

Rubber bushings for upper
and lower links. (4 × 2 Except
high ride suspension)


Adjust


Adjust


Replace


Incorrect



Incorrect


Worn


Steering linkage and upper
and lower links

Replace


Adjust


W orn or deformed


Incorrect

OK
OK
OK
NG
NG
NG
NG
NG
OK
OK
Vehicle trim height


Road wheel

Adjust

Deformed or unbalanced

NG



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ISUZU KB P190 2007