ISUZU KB P190 2007 Workshop Repair Manual

3C-50 FRONT SUSPENSION
Lower Ball Joint
Lower Ball Joint and Associated Parts



RTW 340LF001601
Legend
(1) Lower Ball Joint Bolt
(2) Lower Ball Joint


(3) Lower Ball Joint Nut
(4) Nut and Cotter Pin


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 tie-rod end from the knuckle. Refer to Power Steering Unit in Steering section.
4. Remove the retaining ring from the front axle
driving shaft to release the shaft from hub. Refer to
Front Hub and Disc in Driveline/Axle section.
5. Support lower control arm with a jack.
6. Remove lower ball joint nut and cotter pin, then use remover 5-8840-2005-0 to remove the lowe
r
ball joint from the knuckle.


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ISUZU KB P190 2007

FRONT SUSPENSION 3C-51
CAUTION: Be careful not to damage the ball joint
boot.





901RW 271
7. Remove lower ball joint nut.
8. Remove lower ball joint bolt.
9. Remove lower ball joint.
Inspection and Repair
Make necessary parts replacement if wear, damage,
corrosion or any other abnormal condition is found
through inspection.
• Inspect the lower end boot for damage or grease
leak. Move the ball joint as shown in the figure to
confirm its normal movement.
• Inspect screw/taper area of ball for damage.
• If any defects are found by the above inspections,
replace the ball joint assembly with a new one.





450RS026
• After moving the ball joint 4 or 5 times, attach nut
then measure the preload.
Starting torque: 2.5-6.4 N ⋅
⋅⋅
⋅
m (0.25-0.65 kgf ⋅
⋅⋅
⋅
m/1.8-
4.7 lb ⋅
⋅⋅
⋅
ft)







450RS024
• If the above limits specified are exceeded, replace
the ball joint assembly.
Installation
1. Install lower ball joint.
2. Install lower ball joint bolt.
3. Install lower ball joint nut and tighten it to the specified torque.
Torque: 127 N ⋅
⋅⋅
⋅
m (13.0 kgf ⋅
⋅⋅
⋅
m/94 lb ⋅
⋅⋅
⋅
ft)
4. 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)

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ISUZU KB P190 2007

3C-52 FRONT SUSPENSION
Bump Rubber
Bump Rubber and Associated Parts






RTW 63CMF000101
Legend
(1) Bolt
(2) Bump Rubber




Removal
1. Raise the vehicle and support the frame with suitable safety stands.
2. Remove bolt.
3. Remove bump rubber.
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:
• Bump Rubber

Installation
1. Install bump rubber.
NOTE: Arrow points to the outer side of vehicle afte
r
assembly to vehicle.
2. Install bolt, then tighten it to the specified torque. Torque: 42 N ⋅
⋅⋅
⋅
m (4.3 kgf ⋅
⋅⋅
⋅
m/31 lb ⋅
⋅⋅
⋅
ft)


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ISUZU KB P190 2007

FRONT SUSPENSION 3C-53
Special Tools (4×
××
×
2 High Ride Suspension, 4 ×
××
×
4)

ILLUSTRATION PART NO.
PART NAME
ILLUSTRATION PART NO.
PART NAME
5-8840-2000-0
(J-5822)
Remover; Needle bearing 5-8840-0019-0 (J-23907)
Sliding hammer
(4×4 Model Only)
5-8840-2123-0
(J-36833)
Remover and Installer kit; Lower arm front bushing
5-8840-2128-0
(J-36838)
Installer; Needle bearing (4×4 Model Only)
5-8840-2124-0
(J-36834)
Remover and Installer kit; Lower arm rear bushing
5-8840-0007-0
(J-8092)
Grip
(4×4 Model Only)
5-8840-2121-0
(J-21677-2)
Ball joint remover

5-8840-2851-0
Installer; Oil seal
(4×4 Model Only)
5-8840-2005-0
(J-29107)
Tie-rod end remover
5-8840-2307-0
(J-39376)
Installer; Upper arm bushing

5-8840-0256-0
(J-29755)
Remover and Installer Upper arm bushing



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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

3C-56 FRONT SUSPENSION
Checkpoint Problem Countermeasure



Tire tread (right and left)

Replace (tire)

Difference in wear and tear


Adjust or tighten

Improper or instufficient
tightening

NG
NG
OK
Tire pressure or wheel nuts

Continued from the previous page



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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

3C-58 FRONT SUSPENSION
4. STIFF STEERING WHEEL
Checkpoint Problem Countermeasure



Steering gear box or steering
linkage


Steering linkage


Steering gear


W heel alignment


Replace the part


Replace


Replace


Adjust

Insufficient lubricants or
impurities present; or
excessively worn

Deformed


W orn or damaged


Incorrect


Replace

Stiff or damaged or lack of
grease

OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
OK
Upper and ball joint


Steering column with turn
signal switch

Replace

Interference abrasion

NG

Tire pressure

Adjust

Improper

NG


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ISUZU KB P190 2007

FRONT SUSPENSION 3C-59
5. NOISES
Checkpoint Problem Countermeasure



Lubricating oil and grease for
upper and lower ball joint


Shock absorber


Stabilizer fixing nuts and bolts


Upper and lower links
bushings


Replace


Replace


Retighten


Replace


Insufficient


Faulty


Loose


Worn


Shock absorber fixing nut and
bolt

Retighten

Loose

Continued on the next page OK
OK
OK
OK
NG
NG
NG
NG
NG
OK

Upper and lower ball joint

Replace

Damaged

NG



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ISUZU KB P190 2007