Cylinder Head
- Visually inspect to make sure that there are no cracks, scratches or other damage.
- Use liquid penetrant tester on the important sections to check for fissures.
- Check that there are no marks of gas leaking or water leaking on gasket attachment surface.
- Check the warping of the cylinder head mating surface that mates with cylinder block at the locations shown in the figure using a straight edge (A) and thickness gauge (B). If it exceeds the limit, correct the surface by grinding it with a surface grinder or replace the cylinder head.NOTE:
- Measurement should be performed at a temperature of 20°C (68°F).
- If there is warpage on the cylinder head mating surface, the cylinder head bolt tightening torque and angle tightening may be improper. When installing the cylinder head, make sure that tightening torque and angle tightening work is performed precisely according to the operation procedures.
- When the cylinder head is replaced, lap each valve. Refer to "VALVE SEAT" for lapping. Refer to VALVE SEAT .
Cylinder head warpage:
Limit
0.035 mm (0.0014 in)
Cylinder head grinding limit:
To 98.4 mm (3.874 in)
Cylinder head height:
Standard
98.5 mm (3.878 in)