CYLINDER HEAD INSPECTION

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

• Replace the cylinder head if necessary.

2. Inspect for the following and repair or replace if necessary.

(1) Sunken valve seats

(2) Excessive camshaft oil clearance and end play

3. Measure the cylinder head for distortion in the six directions as shown.

• If the distortion exceeds the maximum, replace the cylinder head.

Maximum distortion:

0.10 mm {0.004 in}

4. Measure the manifold contact surface distortion as shown.

• If the distortion exceeds the maximum, grind the surface or replace the cylinder head.

Maximum distortion:

0.10 mm {0.004 in}

Maximum grinding:

0.15 mm {0.006 in}