如今，全液压挖掘机已遍及大江南北，成为土方施工中不可或缺的工程机械。但据了解，少数操作、维修人员由于没有经过正规培训，对全液压挖掘机的液压系统比较陌生，工作中一旦出现故障，即使是很小的故障，也往往不知所措，不得不请他人修理，不仅误工误时，而且造成许多不必 Nowadays, hydraulic excavators have spread all over the north and south of the country and become indispensable construction machinery for earthwork construction. However, it is understood that a small number of operators and maintenance personnel are relatively unfamiliar with the hydraulic system of the hydraulic excavator because they have not undergone formal training. Once a malfunction occurs in the work, even if they are very small, they are often at a loss and have to repair it. , not only missed jobs, but also caused many unnecessary