2) Inspection of cylinder head
(1) Check for the cylinder head.
·Remove carbon from the cylinder head lower surface,
and then should be careful not to scratch the surface.
··Check any crack or damage that can not found by
naked eyes through the hydraulic or magnetic
particle test.
(2) Distortion of lower surface
· As shown in figure, measure the cylinder head’s
distortion at 6 directions with horizontal ruler and
clearance gauge.
·If the measured value is beyond the limit value, correct
it by means of the fine grinding paper or grinding
machine.
·If it is beyond the max. allowable value, replace the
cylinder head.
<Lower face warpage and height>
(3) Flatness
Check the flatness of the installing surface of cylinder
head’s intake and exhaust manifolds with horizontal
ruler and clearance gauge.
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