Preliminary Check

1. Ensure tires are inflated to correct pressure, then check for uneven wear.
2. Check front wheel bearings, suspension arm, and ball joints for damage and replace components as necessary, to eliminate improper alignment due to faulty components.
3. Check steering gear for damage and adjust as necessary.
4. Check shocks for damage and replace as necessary.
5. Rock vehicle backward and forward and bounce it upward and downward to settle vehicle prior to alignment.
6. Ensure vehicle is unloaded and on a suitable alignment rack according manufacturers' instructions. When measuring equipment is attached directly to outer end of driveshaft and front wheels are on turntables, apply brake to prevent improper vehicle movement.