Cylinder Head Inspection/Repair
CYLINDER HEAD INSPECTION/REPAIR1. Carry out cooling flaw detection on the cylinder head surface.
^ Replace the cylinder head as 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.
Distortion 0.10 mm (0.0039 inch) max.
4. If the cylinder head distortion exceeds the maximum, repair by grinding height or replace the cylinder head.
^ If the cylinder head height is not as specified, replace it.
Standard height 133.8 - 134.0 mm (5.268 - 5.275 inch)
Grinding 0.10 mm (0.0039 inch) max.
5. Measure the manifold contact surface distortion as shown. If the distortion exceeds the specification, grind the surface or replace the cylinder head.
Distortion 0.15 mm (0.0059 inch) max.
Grinding 0.20 mm (0.0078 inch) max.