Procedures

11 12 719 Milling cylinder head sealing surface (N54, N54T)





Important!
Remachining on cylinder head max. 0.3 mm





Necessary preliminary tasks:
^ Remove cylinder head.
^ Remove exhaust camshaft.
^ Remove intake camshaft.
^ Remove roller cam followers.
^ Remove all valves.

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

Note:





Max. deviation from flatness (longitudinal) 0.10 mm.





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

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





Check cylinder head for water leaks.

Assemble engine.