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

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General information on refrigerant circuit<br />

Página 7 de 21<br />

The expansion valve atomizes the streaming refrigerant<br />

and controls the flow quantity so that the vapor is gaseous<br />

only at the evaporator outlet, depending on the heat<br />

transmission.<br />

O-ring seals<br />

These rings seal off the connection points between<br />

individual components of the refrigerant circuit.<br />

Only O-rings that are resistant to refrigerant R134a and<br />

refrigerant oil must be installed. Make sure they are original<br />

replacement parts.<br />

Parts Catalog<br />

O-ring seals:<br />

- Always use only once.<br />

- Make sure diameters - a - and - b - are correct.<br />

- Lubricate with refrigerant oil before installing.<br />

Note:<br />

- The color coding of O-rings for the R134a refrigerant<br />

circuits has been discontinued. Colored and black O-rings<br />

are used.<br />

<strong>Repair</strong> Manual, Heating & Air Conditioning, <strong>Repair</strong><br />

Group 87 ,<br />

Parts Catalog<br />

Refrigerant circuit pipes and hoses<br />

The mixture of refrigerant oil and refrigerant R134a<br />

corrodes certain metals (e.g. copper) and alloys and<br />

dissolves some hose materials. Therefore use original<br />

replacement parts only.<br />

Pipes and hoses are joined together by threaded<br />

connections or via special plug connectors.<br />

Note:<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

13/2/<strong>2005</strong>

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