GENERAL DIAGNOSIS TABLE A
Condition Possible Cause Task
GENERAL DIAGNOSIS TABLE
Since the problems in steering, suspension, wheels and tires involve several systems, they must all be considered when
diagnosing a complaint. To avoid using the wrong symptom, always road test the vehicle first. Proceed with the following
preliminary inspection and correct any defectos which are found.
1) Inspect tires for proper pressure and uneven wear.
2) Raise vehicle on a hoist and inspect front and rear suspencion and rack and pinion for loose or damaged parts.
3) Spin front wheels. Inspect for aut-of-round tires, aut-of-balance tires, bent rims, loosen and/or rought wheel bearings.
4) Ensure that all the tyres are of the same type and even of the same trademark.
3-2-2 GENERAL DIAGNOSIS
Vehicle pulls
(Leads)
• Mismatched or uneven tyres
• Tyres not adequately inflated
• Broken or sagging springs
• Radial tire lateral force
• Disturbed front and alignment
• Disturbed rear wheel alignment
• Brake dragging in one road wheel
• Loose, bent or broken from or rear suspension parts
• Worn Silent-blocks
Replacement tyre.
Inflation of tyres.
Strut damper assembly or coil spring.
Replacement tyre.
Check front end alignment.
Check and adjust rear wheel alignment.
Repair front brakes.
Tighten or replace suspension parts.
Change silent blocks.
Abnormal or
excessive
tyre wear
• Broken or sagging springs
• Tyre out of balance
• Disturbed front rear end alignment
• Faulty strut (shock absorber)
• Overloaded Vehicle
• Not rotating tyre
• Worn or loose road wheel bearing
• Wobbly wheel or tyre
• Tyres not adequately inflated
Strut damper assemble or coil sping.
Balance procedure or replacement tyres.
Check front end alignment.
Strut damper assembly.
Check load.
Replacement tyres or tyre rotation.
Knuckle / bearing.
Replacement wheel or tyre.
Inflation of tyres.
Wheels
tramp
• Blister or bump on tyre
• Improper strut (shock absorber)
Replacement tyre.
Strut damper assembly.
Shimmy,
shake or
vibrations
• Wheel or tyre out of balance
• Loosen wheel bearings
• Worn tie rod ends
• Wheels highly eccentric
• Tyre irregularities
• Disturbed front end alignment
• Loosen or worn steering linkage
• Loose steering gear case bolts
Balance wheels or replace tyres
and/or wheels.
Replacement wheel bearings.
Replacement tie rod end
Replacement wheel and/or tyre.
Replacement tyre.
Check front alignment.
Tighten or replacement.
Tighten steering box nuts.
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