以液力机械为传动形式的ＺＬ系列装载机，多数安装有切断阀开关（位于驾驶室的仪表盘上）。我们在对装载机的维修过程中，时常发现该阀已被拆除；即使尚在，经向操作手了解，也不知道如何应用，形同虚设。其主要原因是切断阀开关连接着装载机底盘传动系之间的气路，因此往往被 The ZL series loaders, which are hydraulically powered, are mostly fitted with shut-off valve switches (located on the dashboard of the cab). We are often in the process of maintenance of the loader, the valve has been found to have been demolished; even if still operating by the operator to understand, do not know how to apply, useless. The main reason for this is that the shut-off valve is connected to the air line between the chassis drivelines of the loader and is therefore often