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Fig. 3: Determining Camber Angle CASTER 1. Caster is tilting of front steering axis either forward or backward from vertical, as viewed from side of vehicle. See Fig. 4 . 2. When axis is tilted backward from vertical, caster is positive. This creates a trailing action on front wheels. When axis is tilted forward, caster is negative, causing a leading action on front wheels.
1998 Chevrolet Pickup C1500 GENERAL INFORMATION Wheel Alignment Theory & Operation
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