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我单位在维修一台合矿ＷＹ８０型液压挖掘机时，发现该机左行走无力：直线行走时向左偏，在软土上向右转弯困难，且在发动机低速时，右边能行走，而左边则不能。 根据挖掘机行走系统的动力传递顺序，我们作了如下检查： （１）液压泵主液压泵除供行走马达高压油外，还为斗杆缸
When I repaired a coal mine WY80 hydraulic excavator, I was found to be left unable to walk: leaning to the left while walking straight and difficult to turn to the right on the soft soil. At low engine speed, the right hand walked while the left hand side Can not. According to excavator walking system power transmission order, we made the following checks: (1) In addition to the hydraulic pump main hydraulic pump for walking motor high pressure oil, but also for the arm cylinder