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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Ball Joint

Upper Ball joint Wear limit:
Apply upward force to the upper control arm and check the dial indicator.
If the dial indicator reading is more than 0.12 mm (0.005 in), replace the steering knuckle.

Lower Ball Joint Wear limit:
Gently lift or pry the suspension to induce ball joint movement.
If the dial indicator reading is more than 0.5 mm (0.020 in), replace the lower control arm.