Audi Workshop Service and Repair Manuals

Removing and installing catalytic converter

Removing –  Remove bolts -arrows- and detach heat shield for turbocharger.

–  Remove nuts -arrows- for catalytic converter. –  Move electrical wiring harness leading to alternator clear at catalytic converter. –  Remove poly V-belt → Chapter.

–  Unplug electrical connector -1- for air conditioner compressor regulating valve -N280- at air conditioner compressor.   WARNING Risk of injury caused by refrigerant. The air conditioner refrigerant circuit must not be opened. –  Remove bolts -arrows- for air conditioner compressor.   Caution Danger of damage to refrigerant lines and hoses. Do NOT stretch, kink or bend refrigerant lines and hoses. –  Tie up air conditioner compressor together with refrigerant hoses to longitudinal member (refrigerant hoses remain connected).

Caution Avoid damage to flexible joint. Do NOT bend flexible joint in front exhaust pipe more than 10°. –  Remove nuts -1- and -2-. –  Move clear electrical wiring for Lambda probe after catalytic converter -G130--arrows-. –  Detach front exhaust pipe from catalytic converter.

–  Remove electrical connector -2- for Lambda probe -G39- from bracket and unplug connector. –  Move clear electrical wiring for Lambda probe -G39-.   Note Disregard -items 1, 3-.

–  Remove bolts -1- and -2- and detach catalytic converter. Installing l  Tightening torques → Chapter Installation is carried out in the reverse order; note the following: –  Install front exhaust pipe → Chapter. –  Install air conditioner compressor → Rep. Gr.87. –  Install poly V-belt → Chapter. –  Install heat shield for turbocharger → Chapter.