Wheel Alignment (Inspection): CHEVROLET: Caster: Chevette
Adjust caster by realigning washers located between legs of upper control arm and locating tube. Always use 2 washers with a combined thickness of 0.472". If a 0.12" washer is installed at front and a 0.35" washer at rear, it will change caster + 1 °. If reversed with a 0.35" washer at front and a 0.12" washer at rear, caster will change -1°. See Fig 1.