Accumulator

A/C Accumulator:

The accumulator is downstream of the evaporator core. Refrigerant vapor and refrigerant oil are received by the accumulator from the evaporator. The accumulator separates moisture from refrigerant vapor - a desiccant located inside the bottom of the accumulator is used to dry the refrigerant - and stores the air conditioning refrigerant as both a vapor and a liquid, along with refrigerant oil. An internal oil bleed hole at the outlet of the accumulator internal tube provides the oil return path to the compressor. The accumulator is sealed and non-serviceable. Replace the accumulator only when leaking due to any of the following conditions:
^ Perforation
^ A damaged seal
^ Damaged threads
^ Outside air has entered the system for extended periods of time