Audi Q3: Overview - Belt Pulley

Overview - Belt Pulley, Denso A/C Compressor, Version 1

  Note

This type of belt pulley is installed on a "7 SEU 16" A/C compressor.

1 - Bolt

• 20 Nm
• Replacing

2 - Drive Plate

• There are different versions. Refer to the Parts Catalog.
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 1".
• 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

3 - Circlip

• Replacing
• Install on the proper side - the flat side faces A/C compressor

4 - Belt Pulley

• There are different versions. Refer to the Parts Catalog.
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 1".
• The overload protection takes over when the rubber element on the belt pulley loosens because 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.

  Note

Under certain conditions (for example, rough engine idle), rubber element of pulley can disengage without a malfunction existing at compressor or in refrigerant circuit.

5 - Air Conditioning (A/C) Compressor

• Clean the A/C compressor driveshaft before setting the belt pulley on it

Overview - Belt Pulley, Denso A/C Compressor, Version 2

  Note

This type of belt pulley is installed on a "7 SEU 17" A/C compressor.

1 - Circlip

• With a rubber disc vulcanized on
• Carefully remove using a small screwdriver or needle-nose pliers (especially note the belt pulley when doing this)
• The rubber disc that is vulcanized on serves as noise insulation during low compressor output when engine is idling

2 - Drive Plate

• 35 Nm
• There are different versions. Refer to the Parts Catalog.
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 2".
• Attached to the A/C compressor input shaft
• 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
• A plastic washer may be glued on, depending on time period of production. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 2".

3 - Circlip

• Replacing
• Install on the proper side - the flat side faces A/C compressor

4 - Spacer

• Dimension: 17.5 x 10 x 3 mm

5 - Rubber Elements

• Quantity: 6
• Install on correct side. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 2".
• Decouples the belt pulley from A/C compressor input shaft, dampens vibrations and noise

6 - Belt Pulley

• There are different versions. Refer to the Parts Catalog.
• Made of plastic and is sensitive to impact
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 2".

7 - A/C Compressor

• Clean the A/C compressor driveshaft before setting the belt pulley on it

Overview - Belt Pulley, Denso A/C Compressor, Version 3

  Note

This type of belt pulley is installed on a "6 SEU 14" A/C compressor.

1 - Sealing Cap

2 - Drive Plate

• 30 Nm
• Replacing
• Attached to the A/C compressor input shaft

  Note

The thread of the new drive plate has already been greased with a specific amount of a grease by the manufacturer.

• There are different versions. Refer to the Parts Catalog.
• 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
• With rubber elements for decoupling belt pulley from A/C compressor input, dampens rations and noise.
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 3".

3 - Circlip

• Replacing
• Install on the proper side - the flat side faces A/C compressor

4 - Belt Pulley

• There are different versions. Refer to the Parts Catalog.
• Made of plastic and is sensitive to impact
• Removing and installing. Refer to → Chapter "Belt Pulley, Removing and Installing, Denso A/C Compressor, Version 3".

5 - Air Conditioning (A/C) Compressor

• Clean the A/C compressor driveshaft before setting the belt pulley on it

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