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小型挖掘机旁通阀故障怎么办?

2020-03-06

 

   小型挖掘机旁通阀故障今天来分析小型挖掘机中央旁通阀的故障。

1.吊臂抬起,铲斗低速挖掘和卸载,中央旁通阀卡在打开位置,主泵的油输出返回液压油箱,动臂上升和铲斗工作电路不可触及,拆下中央旁路线轴进行清洁。

2.动臂缓慢上升,动臂上升时出现液压噪音:动臂逻辑止回阀卡死原因,压力油不能进入动臂升起油路,动臂逻辑止回阀被拆下。

3.摇杆以低速伸出或缩回:中央旁通阀芯卡在打开位置,主泵的油输出流回液压油箱,不能进入斗杆工作回路,中央旁路拆卸阀门进行清洁。

4.电机开始转动,但发动机无法启动:中央旁通阀芯卡在关闭位置,主泵1和2的油输出不能返回液压油箱,中央旁路阀芯拆卸清洗。

    关于小型挖掘机旁通阀故障了解就是这样,希望对你有帮助。小型挖掘机

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