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Ⅱ号喷油泵为了改善起动性能和压力波动较大的矛盾,在泵盖油路的回油管首端装有一个要求压力保持在0.5公斤/厘米~2的限压阀,这个阀装在泵盖回油管首端的转向接头螺栓内,与该螺栓构成一个限压阀总成。由于这个螺栓和输油泵上的两个转向接头螺栓的螺纹一致,又由于有的机手不了解这个阀的作用,所以,在拆装过程中,不注意而把阀丢失,或将输油泵上的螺栓错装。由于错装或漏装了限压阀,使供油腔内燃油压力不足或无
In order to improve the start-up performance and pressure fluctuations greater contradictions, pump head oil return pipe is equipped with a request to maintain the pressure at 0.5 kg / cm ~ 2 pressure limiting valve, the valve mounted on the pump cover Return to the first end of the steering head connector bolt, and the bolt form a pressure limiting valve assembly. Because of this bolt and the pump on the two steering joint bolt thread consistency, and because some of the hands do not understand the role of the valve, so during disassembly, pay attention to the valve is missing, or the pump on the The wrong bolts. Due to wrong installation or leakage of the pressure-limiting valve, the fuel supply chamber pressure is low or no oil