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

Cruise Control: Testing and Inspection

- Remove driver's side instrument panel trim.
- Remove vacuum hose from vacuum pump and seal end of hose.
- Apply pressure to throttle control element diaphragm by depressing brake pedal by hand until resistance is felt.
- Release brake pedal.
- Diaphragm must not move.