OVERVIEW - BELT PULLEY, "Denso" A/C COMPRESSOR, VERSION "2"

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A/C compressor without A/C Clutch -N25-

NOTE:

If overload protection of pulley triggers, check the A/C compressor for ease of motion before replacing the pulley. If the A/C compressor creates friction, replace it completely.

To remove the belt pulley, it depends on engine version if it is necessary to remove A/C compressor from engine. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING ON BRACKET .

Different belt pulley versions may be installed, depending on A/C compressor type and engine version. Refer to the Parts Information.

Belt pulley, removing and installing. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "1" .

Fig 1: Belt Pulley, Denso A/C Compressor, Version 1

Courtesy of AUDI OF AMERICA, LLC

Circlip with Rubber Disc
- Remove carefully using a small screwdriver or needle-nose pliers (especially note belt pulley when doing this).
- Removing and installing. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "2" .
- The rubber disc that is vulcanized on serves as noise insulation during low compressor output when engine is idling
Drive Plate
- Tightening specification: 35 Nm
- Attached to the A/C compressor input shaft
- There are different versions. Refer to the Parts Information
- The overload protection takes over when the torque is excessive (for example, if the A/C compressor runs with resistance) and the belt pulley runs freely without driving the A/C compressor.
- Removing and installing. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "2" .
Circlip
- Always replace
- Install on correct side (flat side toward A/C compressor)
- Removing and installing. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "2" .
Spacer
- Dimensions: 17.5 x 10 x 3 mm
Rubber Elements
- Quantity: 6, install on proper side. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "2" .
- De-couples belt pulley from compressor drive axle, damps vibrations and noise.
- For installation, lightly coat rubber elements, for example with tire mounting paste or a soap solution (as a lubricant)
Belt Pulley
- The belt pulley is made of plastic and is sensitive to impact, therefore take special care when handling it.
- There are different versions. Refer to the Parts Information
- Removing and installing. Refer to BELT PULLEY, REMOVING AND INSTALLING, "Denso" A/C COMPRESSOR, VERSION "2" .
A/C Compressor
- There are different versions depending on engine installed and the market. Refer to the Parts Information
- Clean the A/C compressor flange before installing the pulley
  NOTE:
  There are different versions depending on the refrigerant (R134a or R1234yf). Refer to the Parts Information.