Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Service manual — part 2059
3C-40 FRONT SUSPENSION
TROUBLESHOOTING
1. VIBRATION, SHOCK, AND SHIMMY OF STEERING WHEEL
Checkpoint
Trouble Cause
Countermeasure
Check front axle
Check wheel alignment
Check suspension ball joint
Check shock absorber or
attaching nut and bolt
Check tires and wheels
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.
•
Worn or incorrectly adjusted wheel
bearing.
Replace; refer to Section 4C "Front
Wheel Drive"
•
Insufficiently tightened steering
gear housing.
•
Wear of steering linkage.
•
Excessive backlash due to
improper adjustment of the steering
gear box.
•
Worn 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"
FRONT SUSPENSION 3C-41
2. VEHICLE PULLS TO RIGHT OR LEFT
Checkpoint
Trouble Cause
Countermeasure
Steering linkage, and upper
and lower link and strut bar
Rubber bushing for upper and
lower link, and strut bar
Wheel alignment
Vehicle trim height
Front wheel bearing
Replace
Adjust
Adjust
Deformed Replace
Worn
Incorrect
Incorrect
Brake adjustment (binding)
Adjust
Replace
Incorrect
Collapsed or twisted
Continued on the next page
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
OK
OK
Torsion bar
Front wheel bearing
Adjust or replace
Incorrect adjustment or
abrasion
NG
3C-42 FRONT SUSPENSION
Checkpoint
Trouble Cause
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
FRONT SUSPENSION 3C-43
3. INSTABILITY OF VEHICLE
Checkpoint
Trouble Cause
Countermeasure
Tire pressure
Steering gear (back lash and
worm bearing preload)
Wheel alignment
Rubber bushings for upper
and lower links. and strut bar
(4
×
2)
Adjust
Adjust
Adjust
Replace
Incorrect
Incorrect
Incorrect
Worn
Steering linkage and upper
and lower links
Replace
Adjust
Worn or deformed
Incorrect
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
OK
OK
Vehicle trim height
Road wheel
Adjust
Deformed or unbalanced
NG
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