TIAGO

STEERING

7.4. TROUBLESHOOTINGAND 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.

A. GENERAL TROUBLESHOOTING

Concern

Cause

Remedy

Vehicle pulling one

side

1.Mismatched tyres

2.Cracked / Broken or Sagging

springs

3.Improper tire inflation

4.Improper toe

5.Loose, bent or broken parts at

either end.

6.Brake dragging in one road wheel

7.EPAS calibration not done with

steering wheel at center position.

1.Match tyres properly

2.Replace spring

3.Adjust and correct tire pressure

4.Check and adjust toe

5.Tighten or replace suspension parts

6.Repair brake system

7.Do

the EPAS calibration with steering

wheel at center position.

Unusual excessive

tyre wear

1.Improper toe

2.Vehicle over loaded

3.Loose or worn out wheel bearing

4.Tire inflation not proper

5.Brake dragging

1.Check and adjust toe

2.Check loading

3.Replace wheel bearing

4.Adjust and correct tyre pressure

5.Adjust brakes

Vehicle shaking,

shimmy or

vibrations

1. Wheels out of balance

2. Loose wheel bearings

3. Worn out tie rod ball joints

4. Worn out lower ball joints

5. Excessive wheel run out

6. Disturbed toe

7. Loose or worn steering linkage

8. Improperly mounted tyre or wheel

9. Excessively or unevenly worn

tyres

1. Balance wheels or replace tyre or wheel

2. Replace wheel bearings

3. Replace tie rod ball joints

4. Replace ball joint or lower link at front

5. Repair / replace wheel or tyre

6. Check and adjust toe

7. Replace steering linkages

8. Inspect and mount wheel or tyre as per

specifications

9. Refer remedies of unusual excessive tyre

wear

Suspension

bottoms

1.Vehicle overloaded

2.Damaged bump stopper

3.Springs set permanently broken /

sagging

4.Faulty strut assembly

1. Check loading

2. Replace bump stopper

3. Replace springs

4. Replace strut assembly

Too much play in

steering

1. Steering wheel loose on the shaft.

2. Loose connection between rack.

3. Steering linkages loose or worn

out.

4. Check steering wheel serrations

1. Adjust and tighten steering wheel nut to

specified torque.

2. Tighten or repair.

3. Replace worn out parts.

4. Replace