Audi Workshop Service and Repair Manuals

Removing and installing catalytic converter Special tools and workshop equipment required

t  Hose clamps for hoses up to 25 mm -3094- Removing   Note Fit all cable ties in the original positions when installing.

–  Unplug electrical connector for Lambda probe after catalytic converter -G130- and Lambda probe 1 heater after catalytic converter -Z29- and move electrical wiring clear. –  Unplug electrical connector for Lambda probe -G39- and Lambda probe heater -Z19- and move electrical wiring clear.

–  Unplug connector -1- from air mass meter -G70-. –  Disconnect air intake hose -2-. –  Pull air cleaner housing upwards -arrows-. –  Remove noise insulation → Rep. gr.66. Vehicles with auxiliary heater

–  Clamp off coolant lines (top) for auxiliary heater with hose clamps up to 25 mm -3094- and detach coolant pipes. –  Unfasten coolant lines -1- from body.

–  Clamp off coolant lines (bottom) for auxiliary heater with hose clamps up to 25 mm -3094- and detach coolant pipes. –  Unfasten coolant lines -1- from body and detach. All models: –  Remove front exhaust pipe/front silencer → Chapter.

–  Unfasten connection -1-, remove bolt -2- and take out mounting for catalytic converter.

–  Remove bolts -arrows- and detach heat shield for drive shaft (right-side).

–  Remove nuts -arrows- and lift out turbocharger. Installing Installation is carried out in the reverse order; note the following: Tightening torques → Chapter „Silencers - exploded view“   Note Renew seals, gaskets and self-locking nuts. –  Install front exhaust pipe/front silencer → Chapter. Vehicles with auxiliary heater –  Bleed auxiliary heater → Rep. gr.82.