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液压马达是全液压挖掘机液压系统的执行元件,它将主油泵提供的压力能转换为机构旋转运动的机械能,即液压马达以扭矩和转速形式输出,常见的故障同液压泵有相似之处,但由于使用场合和结构与液压泵有差异,故液压马达的故障表现为启动转矩不足和效率低下,具体讲即是旋转无力及运转迟缓、液压马达泄油和爬行、配流轴与转子(或壳体)及转子和柱塞组件卡死等。
The hydraulic motor is the executive component of the whole hydraulic excavator hydraulic system. It converts the pressure energy provided by the main oil pump into the mechanical energy of the rotary motion of the mechanism, that is, the hydraulic motor outputs the torque and the rotational speed. The common faults have the similarities with the hydraulic pump, However, due to the use of occasions and the structure and the hydraulic pump are different, so the performance of the hydraulic motor failure to start the lack of torque and inefficiencies, in particular that is weak and slow rotation, hydraulic motor drain and crawl, with the distribution shaft and rotor (or Shell) and rotor and plunger assembly stuck and so on.