Isuzu D-Max / Isuzu Rodeo (TFR/TFS). 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