Does Removing the Cylinder Head Count as a Major Overhaul?

[LaWillow]

If the cylinder head is simply removed to inspect the cylinder block, it does not count as a major overhaul. However, replacing components such as the crankshaft, connecting rods, and pistons is considered a major overhaul. Below are some related details about removing the cylinder head: 1. Removing the engine cylinder head qualifies as a major overhaul, as it typically indicates a serious issue with the engine; 2. A car's engine is not a single unit but consists of several parts. From top to bottom, the engine is composed of the valve cover, cylinder head, cylinder block, and oil pan, with sealing gaskets between these components; 3. If the engine only encounters minor issues, removing the cylinder head for repairs is unnecessary. Only in cases of severe faults is it required to disassemble the cylinder head for engine repairs.