
The gas distribution mechanism consists of a camshaft, intake and exhaust valves, as well as parts for their installation and drive: pushers, rods, rocker arms, adjusting screws with nuts, plates with crackers, springs, racks and rocker axles

Before assembly, each crankshaft must be checked on a magnetic or ultrasonic flaw detector for the absence of micro and macro cracks; as well as the compliance of the selected set of main bearing shells with the size of the main journals

Cylinder head and gas distribution mechanism D-245
The cylinder head is a cast iron casting, in the internal cavities of which there are inlet and outlet channels closed by valves