CYLINDER HEAD INSPECTION

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.

• If it exceeds the maximum specification, replace the cylinder head.

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.

• 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}