柱塞、出油阀磨损后,喷油泵的油量、供油角度都会发生变化。Ⅱ号泵使用一年以后,偶件严重磨损,推力盘出坑,在某种转速范围飞球落入坑或沟内,致使油量增大。当偶件严重磨损,而推力盘完好,出油阀及垫不泄油的情况下,喷油泵究竟有什么变化?几年来尚无实际的例证。恰有一台东方红-75拖拉机,Ⅱ号泵由于使用不当,短期内修试二次,即拆修、调试,符合标准后,经一个多月的使用,特别使用次品柴油,使发动机动力下降,冒烟。为查清原因,当即把泵 Plunger, the valve wear, the fuel pump fuel supply angle will change. Ⅱ year after the pump to use, even a serious wear and tear, thrust plate out of the pit, fly ball in a certain speed range into the pit or trench, resulting in increased oil. When the occasional serious wear and tear, the thrust plate intact, the oil valve and the pad does not drain the case, the fuel pump what changes? There is no practical example for years. Just a Dongfanghong -75 tractor, Ⅱ pump due to improper use, short-term repair twice, that is, dismantling, debugging, in line with the standards, after more than a month of use, especially the use of defective diesel, the engine power down ,smoke. To find out the reason, immediately put the pump