A/C Compressor Drive Unit

A/C Compressor Drive Unit

• Due to the installation position of the A/C compressor, the drive unit can only be checked after the subframe and the left engine mount have been removed, refer to FSI engine => [ Compressor ] Compressor or TFSI engine => [ Compressor ] Compressor.

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






1 - A/C Compressor Driveshaft

• Check, the driveshaft must be seated free of play in splines of engine drive wheel with thread tightened, refer to => [ A/C Compressor Driveshaft ] A/C Compressor Driveshaft.

• Tightening specification 60 Nm.

• Refer to => [ A/C Compressor Input Shaft, Loosening and Tightening ] A/C Compressor Input Shaft, Loosening and Tightening.

• Refer to => [ A/C Compressor Driveshaft ] A/C Compressor Driveshaft.

• Grease the splines to the engine drive wheel with grease (G 000 100) Electronic Parts Catalog.

2 - Hex Socket Head Bolt

• Tightening specification 10 Nm.

3 - Drive Plate

• The overload protection takes over when the torque is excessive (for example, if the A/C compressor runs with resistance) and the input shaft runs freely without driving the A/C compressor.

• Refer to => [ Drive Plate with Overload Protection, Checking Run-Out and Adjusting ] Adjustments,

• Refer to => [ Drive Plate with Overload Protection ] Drive Plate with Overload Protection.

4 - Drive Plate

• Tightening specification 30 Nm.

• 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 input shaft runs freely without driving the A/C compressor.

• Removal and installation, refer to => [ A/C Compressor Drive Plate ] A/C Compressor Drive Plate.

5 - Rubber Element

• when the drive unit decouples, the vibrations and noises are dampened.

• When installing, coat the rubber elements B lightly using soapy water (as a lubricant).

• Removing and installing, refer to => [ A/C Compressor Drive Plate ] A/C Compressor Drive Plate.

6 - Spacer

• The original disc must be installed.

• Dimension: 17.5 x 10 x 3 mm.

7 - Circlip

• Replace

• install on correct side (flat side toward A/C compressor).

• Removing and installing, refer to => [ Drive Plate with Roller Bearing ] Drive Plate with Roller Bearing.

8 - Drive Plate

• With roller bearing.

• Removing and installing, refer to => [ Drive Plate with Roller Bearing ] Drive Plate with Roller Bearing.

• Clean the A/C compressor flange before installing the drive plate.

9 - A/C Compressor

• Different versions may be installed, depending on engine version and country version of vehicle. Refer to Electronic Parts Catalog.