A/C Compressor Drive Unit Overview

A/C Compressor Drive Unit Overview

• 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 Input Shaft

• Tightening specification 60 Nm

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

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

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

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

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.

• Run-out, checking and adjusting, refer to => [ Drive Plate with Overload Protection, Checking Run-Out and Adjusting ] Adjustments.

• Removing and installing, 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.

• Removing and installing, 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 Anti-Friction Bearing ] Drive Plate With Anti-Friction Bearing.

8 - Drive Plate

• With roller bearing.

• Removing and installing, refer to => [ Drive Plate with Anti-Friction Bearing ] Drive Plate With Anti-Friction 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 (ETKA).