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Home >> Chevrolet >> 1986 >> Astro Van Passenger, Standard >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Wheel Alignment Specifications & Procedures >> Caster >> 4WD Models
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4WD Models

Determine caster angle from alignment machine and correct (if adjustable) as necessary. To adjust caster on "T" models, loosen upper control arm-to-frame mounting nuts. Rotate either cam (depending on adjustment needed) by rotating bolt head. To increase positive caster, move front cam lobe inward and rear cam outward and vise versa. If vehicle front end alignment specifications are not within limits, check for damaged control arms and related parts.