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

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Compressor HVAC: Service Precautions

CAUTION: To prevent refrigerant system contamination, if you are installing a
new A/C compressor because the compressor has failed internally, you must carry out the following procedures:
- If A/C flusher is available, carry out the A/C System Flushing procedure. Air Conditioning System Flushing

- If A/C flusher is not available, carry out the Refrigerant System Filtering After A/C Component Replacement. Refrigerant System Filtering After A/C Component Replacement

- Install a new A/C evaporator core orifice.