DIAGNOSIS AND TESTING - SUSPENSION AND STEERING SYSTEM


CONDITION
  		 POSSIBLE CAUSES
  		 CORRECTION
  
FRONT END NOISE
  		 1. Loose or worn wheel bearings.
  		 1. Replace wheel bearings.
  
2. Loose or worn steering or suspension components.
  		 2. Tighten or replace components as necessary.
  		  
EXCESSIVE PLAY IN STEERING
  		 1. Loose or worn wheel bearings.
  		 1. Replace wheel bearings.
  
2. Loose or worn steering or suspension components.
  		 2. Tighten or replace components as necessary.
  		  
3. Loose or worn steering gear.
  		 3. Adjust or replace steering gear.
  		  
FRONT WHEELS SHIMMY
  		 1. Loose or worn wheel bearings.
  		 1. Replace wheel bearings.
  
2. Loose or worn steering or suspension components.
  		 2. Tighten or replace components as necessary.
  		  
3. Tires worn or out of balance.
  		 3. Replace or balance tires.
  		  
4. Alignment.
  		 4. Align vehicle to specifications.
  		  
VEHICLE INSTABILITY
  		 1. Loose or worn wheel bearings.
  		 1. Replace wheel bearings.
  
2. Loose or worn steering or suspension components.
  		 2. Tighten or replace components as necessary.
  		  
3. Tire pressure.
  		 3. Adjust tire pressure.
  		  
4. Alignment.
  		 4. Align vehicle to specifications.
  		  
EXCESSIVE STEERING EFFORT
  		 1. Loose or worn steering gear.
  		 1. Adjust or replace steering gear.
  
2. Power steering fluid low.
  		 2. Add fluid and repair leak.
  		  
3. Column coupler binding.
  		 3. Replace coupler.
  		  
4. Tire pressure.
  		 4. Adjust tire pressure.
  		  
5. Alignment.
  		 5. Align vehicle to specifications.
  		  
VEHICLE PULLS TO ONE SIDE DURING BRAKING
  		 1. Uneven tire pressure.
  		 1. Adjust tire pressure.
  
2. Worn brake components.
  		 2. Repair brakes as necessary.
  		  
3. Air in brake line.
  		 3. Repair as necessary.
  		  
VEHICLE LEADS OR DRIFTS FROM STRAIGHT AHEAD DIRECTION ON UNCROWNED ROAD
  		 1. Radial tire lead.
  		 1. Cross front tires.
  
2. Brakes dragging.
  		 2. Repair brake as necessary.
  		  
3. Weak or broken spring.
  		 3. Replace spring.
  		  
4. Uneven tire pressure.
  		 4. Adjust tire pressure.
  		  
5. Wheel Alignment.
  		 5. Align vehicle.
  		  
6. Loose or worn steering or suspension components.
  		 6. Repair as necessary.
  		  
7. Cross caster out of spec.
  		 7. Align vehicle.
  		  
KNOCKING, RATTLING OR SQUEAKING
  		 1. Worn shock bushings.
  		 1. Replace shock.
  
2. Loose, worn or bent steering/suspension components.
  		 2. Inspect, tighten or replace components as necessary.
  		  
3. Shock valve.
  		 3. Replace shock.
  		  
IMPROPER TRACKING
  		 Loose, worn or bent steering/suspension components.
  		 Inspect, tighten or replace components as necessary.