Ref.: MEL-WA(3D HCV) - OM Ver.1.7
19
5.8.
FRONT WHEEL SETBACK
FRONT WHEEL SETBACK
or front end squareness is a condition in which one wheel
is rearward of the other. If Setback is present the turning radius will not be correct
when the vehicle turns. With this condition, the tyres will wear very much in the same
manner as if they were under inflated. Generally, Setback is the result of collision
damage. It is preferable to have the front tyres square with each other before
alignment is done. The most accurate way of checking is with four wheel alignment
equipment.
The measured angle will be displayed as Negative Front wheel Setback, if the Right
Front wheel leads the Left Front wheel.
Fig. 12
The measured angle will be displayed as Positive Front wheel Setback, if the Right
Front wheel is behind with respect to the Left Front wheel.
Fig. 13
