Cylinder Head Assembly: Testing and Inspection
CYLINDER HEAD INSPECTION1. Perform 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 six directions as shown in the figure.
^ If it exceeds the maximum specification, replace the cylinder head.
Cylinder head gasket contact surface distortion (Maximum) 0.10 mm (0.004 in)
4. 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.
Manifold contact surfaces distortion (Maximum) 0.10 mm (0.004 in)
Manifold contact surfaces distortion (Maximum grinding) 0.15 mm (0.006 in)