EGR Valve: Service and Repair

11 71 501 Removing and installing/replacing exhaust gas recirculation valve (M57T2)





Necessary preliminary tasks:
^ Remove acoustic cover





Unclip Bowden cable for engine bonnet/hood actuator from transverse reinforcement (1).

Release screws on left and right sides.

Tightening torque 51 71 4AZ

Remove cross-brace (1).

Unlock plug (1) and remove.





Unclip cable holder (5).

Unlock quick-connect coupling (4) on pressure pipe.

Detach pressure pipe from exhaust gas recirculation valve.

Pull off vacuum hose (2).

Release V-clamp (3).

Tightening torque 11 71 1AZ.

Installation:
Replace V-clamp (3).

Exhaust gas recirculation pipe must not be fitted under tension!

Joint all components loose first.

Secure V-clamps.

Then secure the adjoining components to prescribed tightening torque.





Release screws (1).

Tightening torque 11 71 3AZ

Remove exhaust gas recirculation valve towards front.

Installation:
Clean sealing surfaces.

Replace gasket (1).

If the exhaust gas recirculation valve is replaced, it will be necessary to convert the throttle valve.








Assemble engine.