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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System Specifications




PREPARATION

Sealant or/and Oil

- Never mix HFC-134a refrigerant and oil with CFC-12 (R-12) refrigerant and oil.
- Separate and non-interchangeable service equipment must be used for handling each type of refrigerant and oil.
- Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles refrigerant and oil) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid mixed use of the refrigerant and oil.
- Never use adapters that convert one size fitting to another, as refrigerant and oil contamination will occur and compressor failure will result.