Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

Refrigerant circuit
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the circuit.
- The A/C compressor had to be replaced on account of
internal damage (e.g. noise or no output).
- If stipulated by the vehicle-specific repair manual following
replacement of certain components.
Refrigerant circuit, flushing
Note:
- In the case of vehicles on which the refrigerant pipes have
no threads for connection of adapter set V.A.G 1785 . Use
is to be made, for example, of a flushing gun with rubber
end piece for flushing the individual components. Special
care must be taken not to damage the connections
(crushing or scratching).
- Evaporator is to be flushed by way of connection for lowpressure
pipe (large diameter) after removing expansion
valve or removing restrictor.
- Always flush components in direction opposite to
refrigerant flow.
- Check expansion valve and replace if dirty or corroded.
- Replace any components on which dark, sticky deposits
cannot be removed with compressed air.
- Thin, light grey deposits on the insides of pipes do not
impair the function of the components.
- After flushing, always replace receiver or reservoir and
restrictor. Replace dryer cartridge on condensers with
dryer.
Refrigerant circuit, tracing leaks using leak
detector V.A.G 1796
Note:
- Minor leaks can be detected using an electronic leak
detector for example.
- Currents of air quickly disperse refrigerant gas. Draughts
must therefore be avoided during leak detection.
- If the refrigerant circuit is completely empty, charge with
about 100 g of refrigerant.
Leak detection:
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13/2/2005