5.13.3. Possible malfunctions of hydropushers, their reasons and ways of elimination

* The following reasons of the increased noise in the mode of the idling amplifying with growth of frequency of a vr are possible 
shcheniye of a bent shaft up to 1500 min.-1 and not connected with work of hydropushers:
– the increased gaps between cores of valves and the directing plugs;
– increased to the value exceeding admissible value, not coaxiality of the valve and a saddle;
– not parallelism of end faces of valvate springs;
– bigger, than admissible, valve head facet beating.