Brochure

Troubleshooting Guide
Symptom Possible Cause
Pull Left/Right Uneven tire pressure
Uneven tread wear
Mismatched tires
Uneven camber
Uneven caster
Brake drag
Suspension/frame sag
Unbalanced power assist
Bent spindle
Worn suspension components (front/rear)
Excessive tandem scrub
Centerline Steering Error Incorrect front toe
Rear wheel misalignment
Excessive steering and suspension play
Excessive gearbox play
Gearbox loose at the frame
Shimmy Excessive positive caster
Wheel imbalance
Defective suspension and steering components
Excessive wheel and tire runout (lateral)
Worn tires
Under inflation
Steering gear loose
Excessively loose wheel bearings
Ply separation or blister
Improperly torqued lug nuts
Vibration Wheel imbalance
Excessive wheel and tire runout (axial)
Drum imbalance
Drive shaft imbalance
Defective u-joints
Defective wheel bearings
Improper tire inflation
Drivetrain misalignment
Defective shock or shock mounting
Defective tire
– 15 –