18 40 010 Removing and installing/replacing left exhaust manifold (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Scalding hazard!

Only perform these tasks on an engine that has cooled down.

Necessary preliminary tasks:

Remove Left Oxygen Control Sensor.
Remove Left Oxygen Monitor Sensor.
Remove Complete Exhaust System.
Secure Engine In Installation Position With Special Tool.
Lower Front Axle Support.
32 31 211 Replacing Universal Joint For Lower Section Of Steering Spindle .

For purposes of clarity, nuts are shown on removed engine.

Release nuts on exhaust manifold from below.

Remove exhaust manifold towards bottom and pull out towards rear.

Illustrations show N62.

Fig 1: Exhaust Manifold Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace seals.

Seal beads faces the exhaust manifold.

Coat threads with copper paste.

Replace nuts.

For tightening torque refer to 11 62 1AZ in 11 62 EXHAUST MANIFOLD .

Fig 2: Seal Beads Faces

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble exhaust system.

Installation:

Check exhaust system for leaks.

Check function of DME.