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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Normal Braking

Normal Braking





During normal (non anti-lock) braking, the solenoid valves has current flow. The dump valve is closed and the isolation valve is opened due to spring force.
Brake fluid travels through the center of the isolation valve (normally open) around the dump valve (normally closed) and then to the brake pistons.