- cylinder head housing (mating plane cylinder head);
- valves (rod wear, condition of the locking surface, the presence of burnouts),
- valve guides (wear);
- valve seats (state of locking surfaces);
- working surfaces of camshaft bearings (wear);
- mounting surfaces of hydraulic compensators (wear);
- valve seals (elasticity, condition of the oil scraper edge).
After removing the cylinder head, check the values of the control dimensions of the cylinder head.