小松挖掘机液压系统常见故障
jiangyy | 发布时间：2014-01-17 09:16:19
小松挖掘机液压系统常见故障
故障特征 原因分析 故障维修方法
油的泡沫太多
1)油号不对或黏度不合适
2)油频繁地通过安全阀
3)安全阀磨损或损坏
1)排出油液，清洗系统，再注新油
2)调整安全阀使压力合适
3)检查或更换
回油压力突然升高，管接头爆坏 背压阀阀芯卡死 拆检或更换
管路剧烈震动
1)液压系统中有空气
2)工作油不足
3)管路没有用压板固定
4)背压阀阀芯不灵活或卡死
1)拧紧易漏接口，排除空气，更换密封件
2)检查并加油
3)加固定压板
4)拆检或更换
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