Audi Workshop Service and Repair Manuals

Removing and installing drive unit and damper spring Special tools and workshop equipment required

t  Used oil collection and extraction unit -V.A.G 1782- t  Sealant → Electronic parts catalogue t  Oil for supercharger drive → Electronic parts catalogue t  Spreader tool (commercially available)

Removing l  Supercharger secured to engine and gearbox support -VAS 6095- → Chapter. –  Detach coolant pipes from supercharger → Chapter. –  Position supercharger vertically in engine and gearbox support. l  Drive unit faces upwards.

–  Remove bolts -arrows-.

Caution To make sure bearing cover -1- does not come loose and remains properly sealed, always use spreader tool -arrows- to press off drive unit -2- as shown in illustration (do not use a hammer). –  Carefully press off drive unit from bearing cover and detach. –  Detach damper spring.

–  With the aid of used oil collection and extraction unit -V.A.G 1782-, extract all oil for supercharger drive from bearing cover (including oil chambers -arrows- between ribs). Installing l  Tightening torques → Chapter „Drive unit - exploded view“   Note t  Renew the drive unit bolts. t  Fit self-locking bolts or insert bolts with locking fluid → Electronic parts catalogue. –  Clean sealing surfaces; they must be free of oil and grease. –  Before assembly, always remove residues from threaded holes for drive unit in bearing cover using a thread tap. –  Fill bearing cover with oil for supercharger drive.   Note The container is filled with the required capacity. It is not possible to check the oil level at a later stage.

–  Insert damper spring in damper element. l  End -1- of damper spring must engage in hole -arrow- in rear damper element. –  Apply a thin layer of sealant to sealing surface of drive unit. –  Fit drive unit to supercharger housing (pay attention to dowel sleeves).   Caution Avoid damage to drive shaft. The drive unit must not be pulled in by screwing in the bolts. –  Simultaneously turn drive pulley until opposite end of damper spring engages in hole in drive unit. Remaining installation steps are carried out in reverse sequence; note the following: –  Check supercharger for leaks → Chapter. –  Install coolant pipes on supercharger → Chapter.