Trouble sysmptom | Probable cause |
Hard steering | Improper front wheel alignment Excessive turning resistance of lower arm ball joint Flat tire No power assist |
Poor return of steering wheel to center | Improper front wheel alignment |
Poor ride quality | Improper front wheel alignment Damaged shock absorber Varied or dameged stabilizer Varied or dameged coil spring Worn lower arm bushing |
Abnormal tire wear | Improper front wheel alignment Worn of shock absorber |
Wandering | Improper front wheel alignment Poor turning resistance of lower arm ball joint Loose or worn lower arm bushing |
Vehicle pulls to one side | Improper front wheel alignment Excessive turning resistance of lower arm ball joint Varied or dameged coil spring Bent lower arm Improper tire inflation pressure |
Steering wheel shimmy | Improper front wheel alignment Excessive turning resistance of lower arm ball joint Varied or dameged stabilizer Worn lower arm bushing Worn of shock absorber Varied or dameged coil spring Improper front wheel alignment |
Bottoming | Broken or worn spring Malfunction of shock absorber |
WHEEL AND TIRE DIAGNOSIS | ||
Radid wear at the center | Rapid wear at both shoulders | Wear at one shoulder |
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● Center-tread down to fabric due to excessive over inflated tires ● Lack of rotation ● Excessive toe on drive wheels ● Heavy acceleration on drive | ● Underinflated tires ● Worn suspension components ● Excessive cornering speeds ● Lack of rotation | ● Toe adjustment out of specification ● Camber out of specification ● Damaged strut ● Damaged lower arm |
WHEEL AND TIRE DIAGNOSIS | ||
Partial wear | Feather edges wheels | Wear pattern |
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● Cansed by irreqular burrs on brak drums. | ● Toe adjustment out of specification ● Damaged or worn tie rods ● Damaged knuckle | ● Excessive toe on non-drive wheels ● Lack of rotation |
