小松WA-3系列装载机的油路上装有多种油压开关,根据该系列装载机的总电路图,列出与各油压开关相关的分立电路图,即可快速排除故障。1.发动机机油油压开关常闭型油压开关安装在发动机主油路上,当油压低于设定值时,此开关闭合,发动机油压指示灯点亮;当发动机油压高 Komatsu WA-3 Series loaders have a variety of oil pressure switches installed on the circuit, according to the series of loaders total circuit diagram, and hydraulic switches listed in the discrete circuit diagram, you can quickly troubleshoot. 1. Engine oil pressure switch normally closed type oil pressure switch installed in the main engine oil, when the oil pressure is lower than the set value, the switch is closed, the engine oil pressure indicator light; when the engine oil pressure is high