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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation & Air Conditioning >> 87 Air Conditioning >> Description And Operation >> Compressor Drive Unit

Compressor Drive Unit

NOTE:

If drive plate overload protection activates, check compressor for ease of motion before replacing the drive unit. If compressor creates friction, replace it completely.

On vehicles with an 8 cylinder FSI engine, the A/C compressor is driven by an input shaft and not by a belt.

Fig 1: A/C Compressor Drive Unit Overview
GWWA87-0620Courtesy of AUDI OF AMERICA, LLC
  1. 1 -

    Compressor Input Shaft

  2. 2 -

    Hex Socket Head Bolt

    • Tightening specification 10 Nm
  3. 3 -

    Drive Plate

  4. 4 -

    Drive Plate

    • Tightening specification 30 Nm
    • Attached to compressor input shaft.
    • With overload safeguard, triggers when torque is too-high (for example, compressor produces friction) and driveshaft runs freely without driving the compressor.
    • Removing and installing, refer to DRIVE PLATE .
  5. 5 -

    Rubber Element

    • Decouples drive unit, dampens vibrations and noises.
    • When installing, coat rubber element lightly using, for example, soapy water (as sliding compound).
    • Removing and installing, refer to DRIVE PLATE .
  6. 6 -

    Spacer

    • The original disc must be installed.
    • Dimension: 17.5 x 10 x 3 mm
  7. 7 -

    Circlip

  8. 8 -

    Drive Plate

  9. 9 -

    Compressor

    • Different versions may be installed, depending on engine version and country version of vehicle.
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