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Home >> GMC >> 1991 >> Forward Control 7.4 N >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C Compressor Oil Checking >> Servicing Precautions >> Discharging System
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Discharging System

CAUTION: When discharging air conditioning system, use only approved refrigerant recovery/recycling equipment. Make every attempt to avoid discharging refrigerant into the atmosphere.

If compressor has stem-type service valves, it can be isolated and removed without discharging entire system. Otherwise, discharge system completely using approved refrigerant recovery/recycling equipment before loosening any fittings.

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