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)

Or, hide this message: temporarily or permanently

Brake Pressure Switch

DESCRIPTION
The Brake Pressure Switch is a redundant safety device used to deactivate speed control system.

OPERATION
Under increased brake pedal pressure (5-10 lbs), switch will open and remove power from the servo clutch.