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Audi A4 Cabriolet V6-3.0L (AVK) (2003)03 · Maintenance
03 · Maintenance

Refrigerant: Specifications (page 2 of 7)

Make
Audi
Model
A4 Cabriolet
Engine
V6-3.0L (AVK)
Year
2003
Section
Fluids › Refrigerant
MaintenanceSpecifications · page 2 of 7
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Refrigerant: Locations

A/C Refrigerant System, Component Overview

HD = High pressure side
ND = Low pressure side

1

-

A/C Compressor Regulator Valve  -N280-
-

Do not remove

-

Checking activation and function.

NOTE:  The A/C Compressor Regulator Valve -N280- is activated by the A/C control head -E87-, -N280-regulates the pressure on the
low pressure side of the compressor.

2

-

Compressor
O-ring seals for compressor:
-

For low pressure-connection: 23.8 mm x 2.4 mm

-

For high pressure-connection: 11.1 mm x 1.8 mm

-

Refrigerant lines on compressor, removing and installing.

-

To protect the compressor, the engine should only be started with the refrigerant circuit completely assembled.

-

Remove ribbed belt:

-

Compressor removing and installing.

-

Different compressors, depending on country variant and engine.

-

If a new compressor has been installed or new refrigerant oil has been put into the compressor (e.g. after blowing through the A/C system),
the compressor must be turned by hand approx. 10 revolutions. This ensures that the compressor is not damaged when activated.

3

-

Oil drain plug
-

Denso-compressors have sealing ring installed, always replace

-

Tightening torque: 30 Nm

-

Should only be unscrewed to drain refrigerant oil and with the compressor removed. Turn compressor via pulley, to speed up the oil
drainage.

4

-

Belt pulley

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Parts & tools for this job For 2003 Audi A4 3.0L

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