一，100吨四柱液压机吸油管或机油滤清器堵塞，二是油粘度过大，三是四柱液压机泵速过高，四是端部间隙或圆周间隙过大，第五是溢流阀故障。这五个问题的关键问题是四柱液压机吸油性差，严重泄漏和旁路回油。

100吨四柱液压机缺油的原因及解决方案

Solution: The oil filter of the 100-ton four-column hydraulic machine should be cleaned frequently, and the oil flow should be twice the pump flow. Oil viscosity, pump speed, should be selected according to the provisions of the oil suction height. In addition, check the pump clearance of the four-column hydraulic machine and repair the safety valve and other components.