The cylinder head is cast from aluminum alloy. It contains two camshafts for valve drive on plain bearings, intake and exhaust valves with their own closing springs, and a mechanism for changing the height of intake valve lift.
The cylinder head is connected to the engine block with bolts. Between them there is a gasket (26) made of synthetic (asbestos-free) material, which has a metal edging of the holes for the cylinders. The lining is installed with the mark to the cylinder head. The thickness of the new gasket is 1.2 mm. After grinding the cylinder head on the engine, a repair size gasket is installed, with an increased thickness of 0.3 mm - 1.5 mm.
Allowable warpage (non-flatness) the mating surface of the head with the cylinder block for all engines is no more than 0.03 mm.
The height of the cylinder head of the N62 series engines with an accuracy of±0.07 mm:
- nominal height 133.0 mm;
- minimum height 132.70 mm.