Fluid Reservoir or Reservoir and Restrictor, Replacing

Fluid Reservoir Or Reservoir And Restrictor, Replacing

After contaminants are removed from refrigerant circuit, e.g. due to moisture entering (refrigerant circuit was open for a long time) or due to contamination
- Discharge refrigerant circuit
- Remove A/C compressor.
- Rectify cause of trouble.
- Examine expansion valve for dirt or corrosion; replace if necessary
- Remove oil drain plug from A/C compressor.

NOTE: The oil drain plug of "Denso/Nippondenso" compressors is equipped with an oil seal instead of an O-ring and this is always to be replaced.

- To accelerate drainage of refrigerant oil, rotate compressor e.g. by way of clutch plate of A/C clutch for example.
- Pour old refrigerant oil out of A/C compressor. For instructions on handling refrigerant oil, refer to Volkswagen After Sales; ServiceNet; handbooks; HSO; Volume 2; emission protection; refrigerant from A/C system / refrigerant oil.
- Then fill compressor with quantity of fresh refrigerant oil corresponding to quantity of refrigerant oil in original part compressor.

NOTE:
- Which refrigerant oils and quantities are used for the various compressors.
- To ensure compressor lubrication on start-up, at least 80 cu.cm of refrigerant oil must be poured into the compressor, the remainder can be added for example to the new reservoir or receiver.
- If dirt has penetrated into the compressor with the refrigerant circuit open (e.g. after an accident), compressor is to be replaced.

- Replace receiver or accumulator and restrictor.
- Assemble, evacuate and charge refrigerant circuit.

Replacing without the need for removing contaminants from refrigerant circuit (e.g. in the event of accident damage); no escape of refrigerant and no penetration of moisture and dirt into circuit
- Discharge refrigerant circuit
- Replace restrictor.
- Remove receiver or accumulator.
- Remove dirt from receiver or reservoir.
- Weigh receiver or reservoir removed.

NOTE:
- Add refrigerant oil to new receiver or reservoir until weight of component removed has been attained.
- Install new receiver or reservoir.

- Assemble, evacuate and charge refrigerant circuit.