volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Expansion Valve and Receiver (With Internally Regulated Compressor), Checking|Page 12029 > < A/C - No Cooling/Compressor Seized|Page 12026
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Expansion Valve: Testing and Inspection
Expansion Valve and Receiver (With Internally Regulated Compressor), Checking

Expansion Valve And Receiver (With Internally Regulated Compressor), Checking

NOTE:

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Connect service station.

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Observe test conditions.

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Set engine speed to 2000 RPM.

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Observe pressure gauge set.

NOTE:  Switching pressures and arrangement of refrigerant circuit switches are vehicle specific.

Pressures must be measured at service connections; component locations of these connections are vehicle-specific

Specified values:

High pressure side:

Increasing from initial pressure (on connecting pressure gauges) to max. 20 bar.

Low pressure side:

Decreasing from initial pressure (on connecting pressure gauges) to value in graph.

A. High pressure in bar.
B. Low pressure in bar.
C. Permissible tolerance range.

Expansion Valve and Receiver (With Internally Regulated Compressor), Checking|Page 12029 > < A/C - No Cooling/Compressor Seized|Page 12026