2. Inspect the cylinder head gasket and mating surfaces of the head and cylinder block for pits, leaks, corrosion, and gas breakthrough into the cooling jacket.
3. Examine the cylinder head for cracks.
4. Determine, using a set of probes and a straightedge, the deviation from the flatness of the head plane mating with the gasket, which should not exceed 0.025 mm.
5. flatness of the head plane mating with the gasket, which should not exceed 0.025 mm.
6. Check all threaded holes for damage or contamination.
7. Inspect valve seats for excessive wear and burnout.
