Audi Workshop Service and Repair Manuals

Removing and installing mechanical exhaust gas recirculation valve

Removing Engine cover panel (version 1): –  Pull dipstick -1- out of guide tube. –  Lift engine cover panel at sides -arrows 2- and pull off towards front -arrow 3-. –  Re-insert dipstick in guide tube.

Engine cover panel (version 2): –  Lift off engine cover panel (outside -1- and inside -2-) by pulling up evenly.

All vehicles (continued): –  Remove engine compartment seal from lock carrier and wing panel flanges. –  Pull cover off air duct (release clips on sides) -arrows-.

–  Unclip air duct at the bottom by releasing clips -arrows-. –  Detach air duct (bottom) together with air hose.

–  Unplug electrical connector -1- at air mass meter -G70-. –  Detach vent hose -3- and air hose -2-. –  Unscrew bolt -4- and remove air cleaner housing.

–  Unscrew retaining lug for connecting pipe -arrow-.

–  Remove bolts -5-. –  Detach electrical connector -6- at intake manifold flap motor -V157-. –  Disconnect vacuum hose -3- from mechanical exhaust gas recirculation valve. –  Detach front air intake hose from intake manifold flap motor -V157- by lifting retaining clip -1- slightly. –  Remove bolts -2- and -4- and detach intake manifold flap motor -V157- together with mechanical exhaust gas recirculation valve. –  Unbolt intake manifold flap motor -V157- from mechanical exhaust gas recirculation valve. Installing Installation is carried out in the reverse order; note the following:   Note t  Renew gaskets and seals. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue. –  Adhere to the instructions for installing air pipes and hoses with plug-in connectors → Chapter. Tightening torques

Component	Nm
Mechanical exhaust gas recirculation valve to intake manifold	10
EGR connecting pipe to mechanical exhaust gas recirculation valve	22
Connecting pipe for exhaust gas recirculation to connection	10
Intake manifold flap motor -V157- to mechanical exhaust gas recirculation valve	10