11 12 719 Resurfacing Cylinder Head Sealing Face (N51)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove cylinder head .
Remove exhaust camshaft. See 11 31 028 REMOVING AND INSTALLING/REPLACING EXHAUST CAMSHAFT (N51) .
Remove intermediate lever on inlet side.

Check evenness of cylinder head sealing faces with a standard straight-edge (1).

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

Fig 1: Checking Evenness Of Cylinder Head Sealing Faces With Standard Straight-Edge

Courtesy of BMW OF NORTH AMERICA, INC.

Check evenness of cylinder head sealing faces with a standard straight-edge (1).

NOTE: Max. deviation from level (transversal) 0.05 mm

Fig 2: Checking Evenness Of Cylinder Head Sealing Faces With Standard Straight-Edge

Courtesy of BMW OF NORTH AMERICA, INC.

Check cylinder head for water leaks.

Assemble engine.