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

Refrigerant: Service Precautions

Refrigerant drums have a heavy metal cap. The cap protects the valve and safety plug from damage.For this reason, always replace the cap after each use.

Whenever a container of refrigerant must be carried in a vehicle, do not carry it in the passenger compartment. See the manufacturers guidelines for storage, transportation and the maximum temperature to which the container can be exposed.

When filling a small refrigerant drum from a large one, never fill the smaller drum completely. Always leave space for the liquid to expand.