Manual:AUDI A3 Premium, 4D Sedan 2015Page:49517 / 92758



Overview - Belt Pulley, SANDEN A/C Compressor, Version 1 — 2015 Audi A3 Premium, 4D Sedan Service Manual

Overview - Belt Pulley, SANDEN A/C Compressor, Version 1

Fig 1: Exploded View Of Belt Pulley Sanden A/C Compressor (Version 1)
GWWA87-10250Courtesy of AUDI OF AMERICA, LLC
  1. Nut
    • 25 Nm 
      NOTE:

      The A/C compressor input shaft may be covered with a plastic cap to protect the threads on it (the plastic cap is not illustrated).

      -- Hold the belt pulley securely with a commercially available oil filter band wrench to loosen and tighten the hex nut.

      -- The thread of the nut, which was screwed in with locking compound, must be cleaned (for example, using a thread tap). Otherwise, there is a danger that the input shaft breaks off during assembly.

      -- Clean the thread of the A/C compressor input shaft with a wire brush.

      -- Insert the nut with locking compound. For the locking compound.

  2. Bolt
    • 12 Nm 

      -- Hold the belt pulley securely with a commercially available oil filter band wrench to loosen and tighten the bolts.

      -- The threaded bolt holes, into which the self-locking bolts or bolts with locking compound are screwed, must be cleaned (for example with a thread tap). Otherwise, there is a danger that the bolts break off during assembly.

      -- Clean the thread of the bolts, which are screwed in with locking compound, with a wire brush. Then insert the bolts with locking compound. For the locking compound.

  3. Drive Plate
    • The overload protection (securing spring elements); takes over when the torque is excessive (for example, if the A/C compressor runs with resistance) and the belt pulley runs freely without driving the A/C compressor.
    • Drive plate spring elements dampen vibrations and noise
  4. Circlip
    • Always replace
    • Install on proper side, beveled insertion edge -A- faces away from A/C compressor - install flat side faces the A/C compressor
  5. Belt Pulley
    • With rubber elements -B- and threaded plates -C- for decoupling belt pulley from A/C compressor input shaft, dampens vibrations and noise
      NOTE:

      The threaded plates can also be connected to each other by a ring, depending on the version.

      For "cold climate" vehicles (for example, central and north Europe), A/C compressors with a smaller stroke may be installed. On these A/C compressors, the belt pulley is slightly different from the one illustrated here (the rubber elements -B- are, for example, not present).

  6. A/C Compressor
    • Clean the A/C compressor driveshaft before setting the belt pulley on it
      NOTE:

      There are different versions depending on the refrigerant (R134a or R1234yf).