Removing and Installing/Replacing Rear Exhaust Manifold

18 40 060 Removing and installing/replacing rear exhaust manifold (N52, N52K)





Necessary preliminary work:
^ Remove acoustic cover
^ Release coolant expansion tank and place to one side.
Do not remove the expansion tank and do not drain the coolant.
^ Remove underbody protection
^ Remove complete exhaust system.





Note:
The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.

Remove control sensor from cylinders 4 to 6.

Remove monitoring sensor from cylinders 4 to 6.

Unscrew nuts.





Remove exhaust manifold (1).

Installation note:
Clean sealing surfaces and replace seals.

Replace nuts.

Tightening torque 18 40 1AZ.

Reassemble the vehicle.

Check exhaust system for tightness.