volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Expansion Valve and Receiver (With Internally Regulated Compressor), Checking|Page 8621 > < Restrictor and Reservoir (With Internally Regulated Compressor), Checking|Page 8616
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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.See: Testing and Inspection/Component Tests and General Diagnostics/Working With Service Station

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Observe test conditions. See: Testing and Inspection/Component Tests and General Diagnostics/Pressures In Refrigerant Circuit, Checking (Using
Service Station)

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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 8621 > < Restrictor and Reservoir (With Internally Regulated Compressor), Checking|Page 8616