CYLINDER HEAD INSPECTION

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1.   Carry out the color contrast penetrate examination on the cylinder head surface.

•  If there is a crack, replace the cylinder head.

2.  Measure the combustion chamber side of the cylinder head for distortion in six directions as shown in the figure using a straight edge and feeler gauge.

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•  If it exceeds the maximum specification, replace the cylinder head. Do not attempt to repair the cylinder head by milling or grinding.
Maximum distortion
0.10 mm {0.0039 in}

3.  Measure the contact surface of the exhaust manifold and the intake manifold as shown in the figure for distortion using a straight edge and feeler gauge.

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•  If it exceeds the maximum specification, grind the surface or replace the cylinder head.
Maximum distortion
0.05 mm {0.002 in}
Maximum grinding
0.20 mm {0.008 in}