Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Caster Description






The caster is the tilting of the front steering axis either forward or rearward from the vertical (1). It is measured in degrees of tilt. A rearward tilt (3) is positive caster and a forward tilt (2) is negative caster.

Incorrect caster may result from damaged control arms and other related front suspension parts. Refer to SUSPENSION GENERAL DIAGNOSIS. Uneven or spotty tire wear are signs of unequal caster and camber settings.