Overview - Belt Pulley, SANDEN A/C Compressor

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Belt Pulley Exploded View

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Nut
- 25 Nm
  NOTE:
  To protect the A/C compressor input shaft threads, they may be covered with a plastic cap (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 risk that the input shaft will break off during assembly.
  
  -- Clean the threads of the A/C compressor input shaft with a wire brush.
  
  -- Insert the nut with locking compound. Refer to the Parts Information for the locking fluid.
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 risk that the bolts break off during assembly.
  
  -- Clean the threads of the bolts that were installed with locking fluid using a wire brush. Then insert the bolts with locking fluid. Refer to the Parts Information for the locking fluid.
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.
- The drive plate spring elements dampen vibrations and noise
Circlip
- Replace after removing.
- Install on the proper side, beveled insertion edge -A- faces away from the A/C compressor; flat side faces the A/C compressor
Belt Pulley
- With rubber elements -B- and threaded plates -C- for decoupling the belt pulley from A/C compressor input shaft, dampens vibrations and noises
  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 displacement may be installed. On these A/C compressors, the belt pulley is slightly different from the version illustrated here (the rubber elements -B- are, for example, not present). Refer to Parts Information.
A/C Compressor
- Clean the A/C compressor input shaft before installing the belt pulley