检修过程中对部分故障设备采用相应的测试手段 对于比较严重的故障，例如在维修过程中对液压泵、马达、阀、控制芯片等部件进行相应的测试是必不可少的在更换新零件时，要注意尽量使其在最佳工作状态下运行，这样才能确保各部件及时得到更换。
如果只是简单的更换磨损件就会使液压系统处于超负荷工作状态（如超载),就会使液压系统的工作压力不稳定而导致异常动作，同时还会造成液压油进入油箱和液压管路中造成严重损失这样不仅不利于液压系统的维护，而且会导致重大事故的发生。
为了确保液压系统正常的工作性能是一种动态的过程，就需要在各种恶劣的条件下进行维护并且做到精确控制对于液压系统磨损较大时就需要考虑通过一些检查方法来检查分析设备缺陷存在的原因，确定故障部位和故障原因，然后进行针对性地维修。
我们应根据挖掘机的具体情况采取相应的措施：根据发动机工作状态来判断故障是从哪个环节进行；结合机器工作中存在的问题采取相应的措施去解决问题；通过测试来了解故障情况并能得到正确判断，从而为最终故障的判断提供可靠标准。
我们要做好这一工作，把复杂的情况简单化，从而避免对机器和维修人员造成损失同时也给用户带来不必要的麻烦所以我们要在日常的维修过程中注意以下几点：对一些简单的故障应该通过常规技术检测手段进行检查与排除：第一：如果是由机械零件造成的损坏应首先考虑到内部零件是否有缺陷；第二，是由于长期不正确的工作导致零部件发生损坏；第三则是由于外部原因导致整机工作突然不正常而导致机器瘫痪；四是由于长期不更换液压油导致内部润滑不良；长期接触酸性物质引起液压油管破裂等；等等这些原因都有可能会导致液压设备出现故障，这就需要我们对设备本身进行检测以确定是否存在质量缺陷和异常状况，如果有的话则需要对这些部件进行维修并进行相应的测试与检测才能得出结论。
这样做将极大降低了故障发生后在现场进行维修时所需要的时间和成本，并且也能够保证一定程度上不会对液压系统造成任何损伤或影响性能以及避免因为一些小故障而影响设备的正常使用，同时也能大大降低因挖掘机维修带来的成本。
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