Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSAUDI2012A6 SEDAN (4G2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRA/C COMPRESSOR DRIVE UNIT OVERVIEW
2012 Audi A6 Sedan (4G2) L4-2.0L Turbo (CAEB)
A/C Compressor Drive Unit Overview
2012 Audi A6 Sedan (4G2) L4-2.0L Turbo (CAEB)SECTION A/C Compressor Drive Unit Overview
A/C Compressor Drive Unit Overview
• 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 => [ A/C Compressor ] A/C Compressor.
1 A/C Compressor Input Shaft
• 60 Nm
• There must be no play in the threaded connection seated in the engine drive wheel splines.
• Grease the splines to the engine drive wheel with grease (G 000 100). Refer to Electronic Parts Catalog (ETKA).
• 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.
2 Hex Socket Head Bolt
• 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 drive shaft runs freely without driving the A/C compressor.
• Check the run-out. Refer to => [ A/C Compressor Drive Plate with Overload Protection, Checking Run-Out and Adjusting ] A/C Compressor Drive Plate With Overload Protection, Checking Run-Out and Adjusting.
• Removing and installing, refer to => [ Drive Plate with Overload Protection ] Drive Plate With Overload Protection.
4 Drive Plate
• 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 drive 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
• Decouples the drive unit and dampens vibrations and noises.
• Install on correct side. Refer to => [ A/C Compressor Drive Plate ] A/C Compressor Drive Plate.
6 Spacer
• The original spacer must be installed.
• Dimension: 17.5 x 10 x 3 mm
7 Circlip
• Replace
• Install on the proper side - the Flat side faces A/C compressor.
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
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.