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

Contaminated Service Equipment

Service equipment must be used with only one refrigerant. Recycling equipment, hoses, gauges, and manifolds used for R134a systems cannot be used for servicing R12 systems. A shop that services both R134a systems and R12 systems must have duplicate sets of equipment. The practice of flushing a system with CFCs can no longer be continued because federal and local laws prohibit venting of CFCs into the atmosphere.