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1.动臂上升缓慢一台W4-60型挖掘机在作业中动臂上升缓慢,操作手虽然采取了换泵、调压、排气等措施,并按常见的故障原因进行了检查,但未能解决问题。当修理人员把液压操纵阀组分解(该挖掘机有甲、乙两个工作泵,操纵阀组由1到10号阀组成),检查到6号阀(又称控制阀)时,发现该阀阀芯上的“球面触头”严重松退,改变了该阀阀芯的正确工位,导致了挖掘
1. Boom Rises Slowly A W4-60 excavator raises slowly during the operation. Although the operator takes measures such as changing the pump, regulating pressure and exhausting gas, and examines them according to common failure reasons, Can solve the problem. When the repair crew to break down the hydraulic control valve group (the excavator has A, B two working pumps, control valve group consisting of 1 to 10 valves), check to No. 6 valve (also known as the control valve), the valve was found Spool on the “spherical contact ” a serious slack back, changing the valve spool of the correct station, led to the excavation