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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Vacuum System Leak Test

Vacuum system, leak testing

Vacuum pump (V 18), removing:




- disconnect vacuum line 1 from vacuum pump 2 and seal tightly
- remove instrument panel trim from driver's side lower

Ventilation valves, removing and installing:




- push in membrane on vacuum actuator 4 then push brake pedal down by hand up to pressure point
- release brake pedal
- membrane should not move