Heavy Truck Axle Alignment Evolution - From the Truck Manufacturer to the User

This study fills some of the information gap on how heavy truck axle alignment evolves from what is set at the factory to what exists at delivery and after several thousand miles of use. Alignment parameters were caster, camber, toe, and tandem skew. The results give insight to alignment specifications based on measurement capability / repeatability, the evolution of alignment “changes”, and conclusions on desirable alignment practices for OEMs and user fleets.