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

Vacuum System Check

VACUUM SYSTEM CHECK

Before connecting the vacuum pump to the system, run the pump connected to the low pressure gage to determine the vacuum pump capability. If the vacuum system is unable to reach 711.2-736.6 mm (28 to 29 inches) or more vacuum, check for leaks. If no leaks are found, check the vacuum pump.