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1故障现象前期我部一台EX1100-1型挖掘机在使用过程中,左行走突然无动作。2故障原因诊断根据此挖掘机行走动力传递顺序,做下列检查。1)检查液压泵。左、右行走马达各由一液压泵供油,将两液压泵的排油管对调,对调后左行走仍然没有动作,而右侧正常,故可确定液压泵没有问题;2)检查控制阀。
1 failure phenomenon I EX700-1 an excavator in the early use of the process, left suddenly walk without action. 2 fault diagnosis based on this excavator walking power transmission order, do the following checks. 1) Check the hydraulic pump. Left and right travel motor by a hydraulic pump oil supply, the two oil pump oil pipe alignment, the left transfer after the transfer is still no action, while the right side of the normal, so you can determine the hydraulic pump is no problem; 2) Check the control valve.