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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System Specifications

All brake drums have a discard dimension cast into the brake drum. Replace any drum that does not meet this specification. After refinishing the drums, replace any drum that does not meet maximum rebore diameter or minimum thickness after refinish specs.
Inside Diameter 28.863 Inch (in)
Runout 0.006 Inch (in)
Maximum Rebore Diameter 8.92 Inch (in)
Discard Diameter 8.909 Inch (in)