1 - cylinder head; 2.7 - centering sleeve; 3.8 - threaded plug (M8x1); 4 - cover (∅ 28); 5 - stud (M6x30); 6 - hairpin (MBx60); 9 - stud (M6x28); 10 - bolt (M8x28); 11 - harness holder; 12 - spacer; 13 - seal; 14.30 - lid; 15 - self-locking nut.; 16 - nut (M7); 17 - stud (M7x95); 18, 20 - center, bushing (∅ 9.5); 19 - support bar; 21 - bolt T (M6x50); 22 - bolt T (M6x70); 23 - bolt 7 (M6x100); 24 - threaded plug with sealing ring (M12x1.5x26); 25 - bolt; 26.35 - sealing ring; 27 - stud (M7x39); 28 - hairpin (M7/6x29.5); 29 - threaded plug (M18x1.5); 31 - guide bushing; 32 - head bolt (M10x110); 33 - spacer washer; 34 - cover (∅ 22); 36 - threaded plug (M10x1.0); 37 - cover (∅ 18); 38 - stud (M7x55); 39 - sensor; 40 - exhaust valve seat; 41 - valve seat; 42 - stud (M6x25); 43 - sealing gasket; 44 - check valve
The valves move in pressed guide bushings. The valve seats are pressed into the cylinder head. The valves are driven by camshaft cams through cylindrical hydraulic tappets (hydraulic tappets), valve clearances are compensated automatically and their adjustment is eliminated. The cylinder head has oil channels to supply hydraulic tappets and other elements with oil.
Allowable warpage (non-flatness) the mating surface of the cylinder head and engine block is no more than 0.05 mm. The nominal/minimum height of the engine cylinder head is 140.0/139.70 mm.