Cylinder Head Inspection
- Perform color contrast penetrate examination on the cylinder head surface.
- Replace the cylinder head if necessary.
- Inspect for the following and repair or replace if necessary.
- Sunken valve seats
- Excessive camshaft oil clearance and end play
- Measure the cylinder head for distortion in six directions as shown in the figure.
- If it exceeds the maximum specification, replace the cylinder head.
Maximum distortion, head gasket side
0.10 mm {0.004 in}
- Measure the manifold contact surface distortion as shown in the figure.
- If it exceeds the maximum specification, grind the surface or replace the cylinder head.
Maximum distortion, manifold side
0.10 mm {0.0039 in}
Maximum cutting length, manifold side
0.15 mm {0.0059 in}