Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Cylinder Head Inspection






Cylinder Head Inspection





Check the cylinder head at multiple points for distortion with a straight edge 500 mm (VAS 6075) and feeler gauges.

Max. permissible distortion 0.05 millimeters (mm)

If this value is exceeded, the cylinder head must be replaced. It is not permissible to rework the sealing surface.