Cylinder Head Assembly: Testing and Inspection

Checking for distortion

Note: Before installing a cylinder head which has previously been installed, check it for distortion.

Special tools, testers and auxiliary items required
^ Straight edge
^ Feeler gauges





- Position straight edge diagonally over sealing surface (a check in opposite direction must also be made) and determine distortion with feeler gauges.
Max. permissible distortion- 0.1 mm





Note: Reworking diesel cylinder heads is not permissible.

Cylinder head gasket identification
^ Part No. = - arrow 1 -
^ Production control code arrow 2 - (can be disregarded)
^ Holes arrow 3 -

Note: Different thicknesses of cylinder head gasket are installed depending on the piston projection. When replacing the cylinder head gasket, install a new gasket with the same identification.