Audi Workshop Service and Repair Manuals

Removing and installing catalytic converter (left-side) - vehicles with manual gearbox

Removing –  Remove front silencer (left-side) → Chapter. –  Remove Lambda probe 2 after catalytic converter -G131--item 2- → Rep. Gr.24.   Caution Risk of damage to running gear components. The vehicle must NOT be lowered onto its wheels if the engine/gearbox mountings, steering box or subframe cross brace are not properly installed.

A4 (all), A5 Coupé: –  Remove nut -1- for power steering hydraulic line. –  Remove bolts -arrows- and detach subframe cross brace.   Note Illustration shows the installation position on a vehicle with dynamic steering.

A5 Cabriolet: –  Remove bolt -2- on both sides.   Note Disregard -item 1-.

–  Remove bolt -2- for power steering hydraulic line. –  Remove bolts -1- and -arrows- and detach subframe cross brace.

All vehicles (continued): –  If fitted, remove bolts -arrows- and detach heat shield -1- (left-side).

–  Remove nuts -arrows- and bolt -1- and detach catalytic converter (left-side).   Note For illustration purposes, the installation position is shown with the engine removed. Installing l  Tightening torque → Chapter. Installation is carried out in the reverse order; note the following:   Note Renew gaskets and self-locking nuts. –  Install subframe cross brace → Rep. Gr.40. –  Install Lambda probe 2 after catalytic converter -G131- → Rep. Gr.24. –  Install front silencer (left-side) → Chapter.