11 12 719 Resurfacing Cylinder Head Sealing Face (N54)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Reconditioning on cylinder head max. 0.3 mm

Necessary preliminary tasks:

Remove cylinder head . See 11 12 100 REMOVING AND INSTALLING CYLINDER HEAD (N54) .
Remove exhaust camshaft . See 11 31 028 REMOVING AND INSTALLING OR REPLACING EXHAUST CAMSHAFT (N54) .
Remove inlet camshaft . See 11 31 025 REMOVING AND INSTALLING OR REPLACING INLET CAMSHAFT (N54) .
Remove roller cam followers . See 11 33 050 REMOVING AND INSTALLING/REPLACING ALL CAM FOLLOWERS (N54) .
Remove all valves . See 11 34 552 REMOVING AND INSTALLING OR REPLACING ALL VALVES (N54) .

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 Using 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 Using Standard Straight-Edge

Courtesy of BMW OF NORTH AMERICA, INC.

Check cylinder head for water leaks . See 11 12 729 CHECK CYLINDER HEAD FOR WATER LEAKS (N54) .

Assemble engine.