Cylinder Head Assembly: Testing and Inspection

Fig. 25 Check For Cylinder Head Flatness:

Thoroughly clean mating surface of cylinder head.
1. Using straightedge and feeler gauge, check for cylinder head flatness at six points as shown, Fig. 25.
2. If flatness exceeds warpage limit or if cylinder head height is out of specification, resurface or replace as necessary.
3. After resurfacing, ensure camshaft rotates freely by hand, if any resistance is felt the cylinder head must be replaced.