Cylinder Head Assembly: Testing and Inspection
CYLINDER HEAD INSPECTION1. Inspect the cylinder head surface for cracks and other damage using a red dye penetrant.
- If there is a malfunction, 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 the distortion exceeds the maximum specification, replace the cylinder head.
Maximum distortion, head gasket side of the cylinder head 0.05 mm {0.002 in}
3. Inspect the contact surface of the exhaust manifold and the intake manifold for distortion by measuring as shown in the figure using a straight edge and feeler gauge.
- If the distortion on intake manifold side exceeds the maximum specification, replace the cylinder head.
- If the distortion on exhaust manifold side exceeds the maximum specification, grind the surface or replace the cylinder head.
Maximum distortion, manifold side
IN: 0.10 mm {0.0039 in}
EX: 0.05 mm {0.002 in}
Maximum cutting length, manifold side
IN: Cutting not authorized
EX: 0.20 mm {0.0079 in}