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SUSPENSION SYSTEM
TROUBLE SHOOTING AND DIAGNOSIS
Since the problems in steering, suspension, wheels and tyres involves several symptoms which are probably
interlinked so they must all be considered while diagnosing a complaint.
Before coming to any conclusion or to avoid using of wrong symptoms, always road test the vehicle first. Do some
preliminary visual inspection and correct any defects if found.
1. Check the tire pressures and inspect tire wear.
2. Raise the vehicle on hoist and inspect front and rear suspension for loose or damaged parts.
3. Inspect out of round tyres, bent wheel rims, out of balance wheel, loosen and/or rough wheel bearings.
Concern Cause
Remedy
Vehicle pulling 1. Mismatched tyres
1. Match tyres properly
one side
2. Cracked / Broken or Sagging springs
2. Replace spring
3. Improper tire inflation
3. Adjust and correct tire pressure
3. Improper toe
4. Check and adjust toe
5. Loose, bent or broken parts at either end 5. Tighten or replace suspension parts
6. Brake dragging in one road wheel
6. Repair brake system
Unusual
1. Improper toe
1. Check and adjust toe
excessive
2. Vehicle over loaded
2. Check loading
tyre wear
3. Loose or worn out wheel bearing
3. Replace wheel bearing
4. Tire inflation not proper
4. Adjust and correct tyre pressure
5. Brake dragging
5. Adjust brakes
Vehicle shaking, 1. Wheels out of balance
1. Balance wheels or replace tyre or wheel
shimmy or
2. Loose wheel bearings
2. Replace wheel bearings
vibrations
3. Worn out tie rod ball joints
3. Replace tie rod ball joints
4. Worn out lower ball joints
4. Replace ball joint or lower link at front
5. Excessive wheel run out
5. Repair / replace wheel or tyre
6. Disturbed toe
6. Check and adjust toe
7. Loose or worn steering linkage
7. Replace steering linkages
8. Improperly mounted tyre or wheel
8.Inspectandmountwheelortyreasperspecifications
9. Excessively or unevenly worn tyres
9. Refer remedies of unusual excessive tyrewear
Suspension 1. Vehicle overloaded
1. Check loading
bottoms
2. Damaged bump stopper
2. Replace bump stopper
3. Springs set permanently broken/sagging 3. Replace springs
4. Faulty strut assembly
4. Replace strut assembly
Too much play 1. Steering wheel loose on the shaft
1. Adjust and tighten steering wheel nut to
in steering
specified torque
2. Loose connection between rack
2. Tighten or repair
3. Steering linkages loose or worn out
3. Replace worn out parts
4. Check steering wheel serrations
4. Replace
Cupped tyres 1. Excessive tyre or wheel run out
1. Replace wheel or tyre
2. Tyres out of balance
2. Adjust, balance or replace tyre