Front suspension ISUZU KB P190 2007 Workshop Workshop Manual

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

FRONT SUSPENSION 3C-37
Knuckle
Knuckle and Associated Parts






RUW 63CLF000101
Legend
(1) Torsion Bar
(2) Nut and Cotter Pin, Lower Ball Joint
(3) Back Plate
(4) Nut and Cotter Pin, Upper Ball Joint
(5) Nut and Cotter Pin, Tie-rod End
(6) Knuckle Assembly


(7) Knuckle
(8) Needle Bearing (4 ×4 Model Only)
(9) Thrust W asher (4 ×4 Model Only)
(10) Oil Seal (4 ×4 Model Only)
(11) Speed Sensor harness


Removal
1. Raise the vehicle and support the frame with suitable safety stands.
2. Remove wheel and tire assembly. Refer to W heel
in this section.
3. Remove the brake caliper. Refer to Disc Brakes in Brake section.

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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

3C-40 FRONT SUSPENSION
Upper Control Arm
Upper Control Arm and Associated Parts



RTW 440LF001301
Legend
(1) Bolt and Plate
(2) Camber Shims
(3) Caster Shims
(4) Nut Assembly
(5) Upper Control Arm Assembly
(6) Fulcrum Pin


(7) Bushing
(8) Plate
(9) Upper Control Arm Nut
(10) Speed Sensor harness
(11) Nut and Cotter Pin
(12) Upper Ball Joint, Bolt and Nut


Removal
1. Raise the vehicle and support the frame with suitable safety stands.
2. Remove wheel and tire assembly. Refer to W heel
in this section.
3. Remove the brake caliper and disconnect brake pipe. Refer to Disc Brakes in Brake section.

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ISUZU KB P190 2007

FRONT SUSPENSION 3C-41
4. Support lower control arm with a harness.
5. Remove speed sensor harness.
6. Remove nut and cotter pin then remove knuckle using remover 5-8840-2121-0.
CAUTION: Be careful not to damage the ball joint
boot.


RTW 340SH000401
7. Remove upper ball joint.
8. Remove bolt and plate.
9. Remove nut assembly.
10. Remove camber shims and note the positions and number of shims.
11. Remove caster shims and note the positions and number of shims.
12. Remove upper control arm assembly.
13. Remove upper control arm nut.
14. Remove plate.

15. Remove bushing by using remover 5-8840-0256-0.


RTW 340SH000501




RTW 340SH000601
16. Remove fulcrum pin.
Inspection and Repair
Make necessary parts replacement if wear, damage,
corrosion or any other abnormal conditions are found
through inspection.
Check the following parts:
• Upper control arm
• Bushing
• Fulcrum pin


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ISUZU KB P190 2007

3C-42 FRONT SUSPENSION
Installation
1. Install fulcrum pin.
2. Install bushing by using installer 5-8840-0256-0 and 5-8840-2307-0.



RTW 340SH000701




RTW 340SH000801
3. Install upper ball joint and tighten it to the specified
torque.
Torque: 57 N ⋅
⋅⋅
⋅
m (5.8 kgf ⋅
⋅⋅
⋅
m/42 lb ⋅
⋅⋅
⋅
ft)
4. Install nut and cotter pin then 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)
5. Install plate.

6. Install upper control arm nut and tighten fulcrum
pin nut finger-tight.
NOTE: Apply oil to the thread.
NOTE: Tighten the nut with the parts in the position
shown in the illustration below.
Buffer clearance: 29.7 mm (1.17 in)
Torque: 108 N ⋅
⋅⋅
⋅
m (11.0 kgf ⋅
⋅⋅
⋅
m/80 lb ⋅
⋅⋅
⋅
ft)






RTW 53ASH000301
7. Install upper control arm assembly with the fulcrum
pin projections turned inward.










RTW 53CSH000101-X

8. Install the caster shims (b) between the chassis
frame and fulcrum pin.



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ISUZU KB P190 2007

FRONT SUSPENSION 3C-43
9. Install the camber shims (a) between the chassis
frame and fulcrum pin.



RTW 53CSH000201
10. Install nut assembly.
11. Install bolt and plate (a), and then tighten the bolt to the specified torque.
Torque: 152 N ⋅
⋅⋅
⋅
m (15.5 kgf ⋅
⋅⋅
⋅
m/112 lb ⋅
⋅⋅
⋅
ft)
NOTE: Apply oil to the thread.
12. Install speed sensor harness.


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ISUZU KB P190 2007