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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Accumulator HVAC: Testing and Inspection

It will be necessary to replace the accumulator for the following reasons.

1. The accumulator is restricted, plugged or perforated.
2. The system has been left open for more than 24 hours. (system completely discharged)
3. There is evidence of moisture in the system.
4. A component such as a condenser, evaporator core, refrigerant line or compressor that has seized is replace.