OVERVIEW - A/C COMPRESSOR BELT PULLEY, "Denso" VERSION "1"

• If the belt pulley overload protection is triggered, then the A/C compressor must be checked for ease of movement before replacing the belt pulley. If the A/C compressor is difficult to move, this must be replaced completely.
• Depending on the A/C compressor type and the engine version, different versions of the belt pulley may be installed (different diameters). Refer to the Parts Information.
• As a replacement part, the belt pulley is delivered with the drive plate and the closure cap. The belt pulley and the drive plate are held together with one bolt (when the bolt is no longer needed, dispose of it). When the bolt was manufactured, a predetermined amount of a specific grease was applied to the threads in the drive plate; this amount is sufficient for bolting the drive plate to the compressor one time (a drive plate, which has been removed, cannot be reused). Refer to the Parts Information.

Fig 1: A/C Compressor Belt Pulley, Denso Version 3 Overview

Courtesy of AUDI OF AMERICA, LLC

1. Closure Cap
2. Drive Plate
   • Tightening specification: 30 Nm
   • Replace
   • Attached to the A/C compressor input shaft
   • Clean the threads on the A/C compressor shaft before installing the drive plate.
   • The threads on the new drive plate have already been greased with a specific amount of grease by the manufacturer.
   • There are different versions. Refer to the Parts Information.
   • The overload protection activates when the torque is too high (for example, if the A/C compressor runs with resistance) and the belt pulley runs freely without driving the A/C compressor.
   • For installation, lightly coat rubber elements, for example with tire mounting paste or a soap solution (as a lubricant)
   • Removing and Installing. Refer to BELT PULLEY (WITHOUT A/C Clutch -N25-), REMOVING AND INSTALLING, A/C COMPRESSOR "Denso" MANUFACTURER VERSION "1" .
3. Circlip
   • Replace
   • install on correct side (flat side toward A/C compressor)
   • Removing and Installing. Refer to BELT PULLEY (WITHOUT A/C Clutch -N25-), REMOVING AND INSTALLING, A/C COMPRESSOR "Denso" MANUFACTURER VERSION "1" .
4. Belt Pulley
   • There are different versions (depending, for example, on the type of engine). Refer to the Parts Information.
   • Removing and Installing. Refer to BELT PULLEY (WITHOUT A/C Clutch -N25-), REMOVING AND INSTALLING, A/C COMPRESSOR "Denso" MANUFACTURER VERSION "1" .
5. A/C Compressor
   • There are different versions installed depending on the engine and the vehicle market. Refer to the Parts Information.
   • Clean the A/C compressor flange before installing the belt pulley.
   • Clean the compressor shaft threads and then coat the threads lightly with grease.