11 12 719 Resurfacing cylinder head lower face (N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove EXHAUST CAMSHAFT .
Remove INTERMEDIATE LEVER on inlet side.

Check evenness of cylinder head sealing faces with a standard straightedge (1).

NOTE: Max. deviation from flatness (longitudinal) 0.10 mm

Fig 1: Checking Cylinder Head Sealing Using Straightedge

Courtesy of BMW OF NORTH AMERICA, INC.

Check evenness of cylinder head sealing faces with a standard straightedge (1).

NOTE: Max. deviation from flatness (transverse) 0.05 mm

Fig 2: Checking Cylinder Head Sealing Using Straightedge

Courtesy of BMW OF NORTH AMERICA, INC.

Check cylinder head for WATERTIGHTNESS .

Assemble engine.