ISUZU KB P190 2007 Workshop Repair Manual

3C-30 FRONT SUSPENSION

Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING, REFER
TO THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNECESSARY SRS
SYSTEM REPAIRS.


CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU/GM will call out those fasteners that require
a replacement after removal. ISUZU/GM will also
call out the fasteners that require thread lockers o
r
thread sealant. UNLESS OTHERWISE SPECIFIED,
do not use supplemental coatings (paints, greases,
or other corrosion inhibitors) on threaded fasteners
or fastener joint interfaces. Generally, such
coatings adversely affect the fastener torque and
the joint clamping force, and may damage the
fastener. When you install fasteners, use the
correct tightening sequence and specifications.
Following these instructions can help you avoid
damage to parts and systems.

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ISUZU KB P190 2007

FRONT SUSPENSION 3C-31
Shock Absorber
Shock Absorber and Associated Parts
RTW 340MF000901
Legend
(1) Shock Absorber Nut
(2) Rubber Bushing and W asher

(3) Shock Absorber Bolt and Nut
(4) Shock Absorber
(5) Rubber Bushing and W asher


Removal
1. Raise the vehicle and support it with suitable safety stands.
2. Remove wheel and tire assembly. Refer to W heel Replacement in this section.
3. Remove bolt and nut.
4. Remove nut.
5. Remove rubber bushing and washer.
6. Remove shock absorber.
7. Remove rubber bushing and washer.
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:
• Shock absorber
• Rubber bushing
Installation
1. Install rubber bushing and washer.
2. Install shock absorber.
3. Install rubber bushing and washer.
4. Install shock absorber nut, then tighten it to the specified torque.
Torque: 20 N ⋅
⋅⋅
⋅
m (2.0 kgf ⋅
⋅⋅
⋅
m/14 lb ⋅
⋅⋅
⋅
ft)
5. Install shock absorber bolt and nut, and then tighten to the specified torque.
Torque: 93 N ⋅
⋅⋅
⋅
m (9.5 kgf ⋅
⋅⋅
⋅
m/69 lb ⋅
⋅⋅
⋅
ft)

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ISUZU KB P190 2007

3C-32 FRONT SUSPENSION
Stabilizer Bar
Stabilizer Bar and Associated Parts



RTW 340MF000401
Legend
(1) Rubber Bushing
(2) Bracket and Bolt
(3) Link


(4) Link Nut
(5) Stabilizer Bar
(6) Link Nut

Removal
1. Raise the vehicle and support the frame with
suitable safety stands.
2. Remove the stone guard.
3. Remove wheel and tire assembly. Refer to W heel Replacement in this section.
4. Remove link nut.
CAUTION: Be careful not to break the ball joint
boot.
5. Remove link.
6. Remove bracket.
7. Remove stabilizer bar.
8. Remove rubber bushing.

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:
• Stabilizer bar
• Rubber bushing
• Link ball joint


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ISUZU KB P190 2007

FRONT SUSPENSION 3C-33
Installation
1. Install rubber bushing.
2. Install stabilizer bar.
3. Install bracket and bolt then tighten it to the specified torque.
Torque: 25 N ⋅
⋅⋅
⋅
m (2.5 kgf ⋅
⋅⋅
⋅
m/18 lb ⋅
⋅⋅
⋅
ft)
4. Install link.
5. Install link nut, then tighten it to the specified torque.
Torque: 50 N ⋅
⋅⋅
⋅
m (5.1 kgf ⋅
⋅⋅
⋅
m/37 lb ⋅
⋅⋅
⋅
ft)


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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

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