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

Service Ports/Access Valves

The primary seal for the service ports is a sealing cap. The cap contains an O-ring or gasket that provides a leak-free seal. The following conditions will cause a refrigerant loss:
^ A loose cap
^ A missing cap
^ An incorrect cap