Information on cylinder head contact surface - AH01.30-P-1000-05A

Engine 112, 113 

The cylinder head contact surface must only be machined if mechanically damaged points are present.

The cylinder head contact surface must not be re-worked (face-ground) if a variation exists in the flatness of the cylinder head contact surface in the longitudinal direction and transverse direction (distortion).

When the cylinder head is fitted on again, the distortion is compensated for by tightening the cylinder head bolts.

Stock removal on the cylinder head and at the crankcase of an engine must together be not more than 0.3 mm.

The valve seats must be re-set if the cylinder head separating surface is machined.