Overview - A/C Compressor Power Unit, Vehicles With 8-Cylinder Engine

WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 2017 Audi S5, 2017 Audi A5 Quattro, 2016 Audi S5, 2016 Audi A5 Quattro, and 2015 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

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.

Fig 1: A/C Compressor Drive Unit Overview

Courtesy of AUDI OF AMERICA, LLC

1 -A/C Compressor Input Shaft
- Tightening specification: 60 Nm
- The input shaft must be seated free of play in splines of engine drive wheel with thread tightened. For checking. Refer to A/C COMPRESSOR INPUT SHAFT, REMOVING AND INSTALLING .
- Loosening and tightening. Refer to A/C COMPRESSOR INPUT SHAFT, LOOSENING AND TIGHTENING .
- Removing and installing. Refer to A/C COMPRESSOR INPUT SHAFT, REMOVING AND INSTALLING .
- Grease the splines for the engine drive wheel with Grease:G 000 100 for example. Refer to the Parts Information.
2 -Hex Socket 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 .
- Removing and installing. Refer to DRIVE PLATE WITH OVERLOAD PROTECTION, REMOVING AND INSTALLING .
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, REMOVING AND INSTALLING .
5 -Rubber Element
- When the drive unit de-couples, 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, REMOVING AND INSTALLING .
6 -Spacer
- The original disc must be installed
- Dimensions: 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, REMOVING AND INSTALLING .
8 -Drive Plate
- With roller bearing.
- Removing and installing. Refer to DRIVE PLATE WITH ANTI-FRICTION BEARING, REMOVING AND INSTALLING .
- 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 the Parts Information
  NOTE:
  There are different versions depending on the refrigerant (R134a or R1234yf). Refer to the Parts Information.