11 12 719 Grinding cylinder head lower face (N63) (X6 xDrive 50i)
Necessary preliminary tasks:
- Remove cylinder head. Refer to 11 12 106 REMOVING AND INSTALLING RIGHT CYLINDER HEAD (N63) REP-REP-RAF1511N63O1-1112106 - V.4 (X6 XDRIVE 50I) and 11 12 105 REMOVING AND INSTALLING LEFT CYLINDER HEAD (N63) REP-REP-RAF1511N63O1-1112105 - V.4 (X6 XDRIVE 50I) .
Cylinder head disassembled:
Check evenness of cylinder head lower face with a standard straightedge (1).
NOTE:
Maximum deviation from flatness: longitudinal 0.10 mm.
NOTE:
Maximum deviation from flatness: transversal 0.05 mm.
- Machining limit. Refer to CYLINDER HEAD WITH LID, BMW, N63O1, B40, B44 and 1112 CYLINDER HEAD WITH VALVE SEAT COVER N63O1 B40 B44 TECHNICAL DATA (X6 XDRIVE 50I) .
NOTE:
A cylinder head gasket (+REP) 0.3 mm thicker than usual can be obtained for machined (resurfaced) cylinder heads.