11 12 719 Grinding cylinder head sealing surface (N62)

WARNING: This page is about a different car, the 2006 BMW X5, 2005 BMW X5, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

(Cylinder Head Dismantled)

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

NOTE: Maximum plane deviation: longitudinal 0.10 mm.

Fig 1: Checking Evenness Of Cylinder Head Sealing Surface With Standard Straight-Edge (Longitudinal)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Maximum plane deviation: transversal 0.05 mm.

Machining limit.

Fig 2: Checking Evenness Of Cylinder Head Sealing Surface With Standard Straight-Edge (Transversal)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: A cylinder head seal 0.3 mm thicker than usual can be obtained for machined (milled) cylinder heads.

Fig 3: Identifying Cylinder Head Seal

Courtesy of BMW OF NORTH AMERICA, INC.