Cylinder Head Assembly: Testing and Inspection

1. Remove scale, sealing compound and carbon deposits. After cleaning oil passages, apply compressed air to make certain that the passages are not clogged.
2. Visually check the cylinder head for cracks, damage or water leakage.






3. Check the cylinder head surface for flatness with a straight edge and feeler as shown in illustration.
Standard value, 0.05 mm (0.002 inch).
Wear limit, 0.20 mm (0.008 inch).