Inlet and final valves with the increased working surface of the valve are used to improvement of a gas-stream on an admission and release. Rods of valves of the reduced diameter are applied to decrease in resistance to a stream on an admission and release and to weight reduction of valves. Along with the increased height of raising of the valve, valve pushers without adjusting washers are used that provides the big surface of contact of a cam. Adjustment of gaps in the valvate mechanism is made by a podobor and replacement of the corresponding pushers of valves.

NOTE Well to 35 sizes of pushers of valves, the increment of the size makes 0,020 mm, from 5,060 to 5,740.

Fig. 2.14. Valve section: 1 – cam-shaft; 2 – valve pusher