Volkswagen Golf 1999 Service Manual page 4066

Components, replacing
- Reservoir / receiver or dryer cartridge is to be replaced
under the following conditions.
- Refrigerant circuit was opened and vehicle is older than 5
years.
- Refrigerant circuit has been open for an uncertain time
period (creeping leak).
- Repairs proceed beyond the normal repair time period
and moisture has penetrated.
- Always replace reservoir / receiver or dryer cartridge after
flushing the refrigerant circuit, and keep them sealed for as
long as possible so that the absorption of moisture is
minimized.
- A/C compressor has locked-up.
- Reservoir / receiver is damaged (due to accident).
Warning!
- Contaminated refrigerant oils are to be disposed of as
used oils of unknown origin.
HSO Environment Vol. 2-2. 43. 1
Components (except compressor, reservoir
or receiver) leaking or damaged
Refrigerant circuit completely empty
- Remove malfunctioning component.
- Remove A/C compressor.
- Remove oil drain plug from compressor.
Note:
- The oil drain plug of "Denso" and "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 by way of clutch plate of A/C clutch for
example.
- Pour old refrigerant oil out of compressor, see
Environment Vol. 2-2. 43. 1 .
- Then fill compressor with quantity of fresh refrigerant oil
corresponding to quantity of refrigerant oil in replacement
compressor
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Parts Catalog
HSO
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13/2/2005