日立挖掘机动作慢的测试与诊断

Testing and diagnosing of Hitachi excavator slow movement fault

结合日立EX系列液压挖掘机的工作原理,对其典型故障——动作迟缓的测试、诊断方法做了系统分析与介绍,对快速准确排除该类机型的故障具有现实意义。

This paper describes operation principle of the EX series Hitachi hydraulic excavator and presents typical fault （slow movement ） testing and diagnosing methods. It is helpful to remove the similar faults quickly and accurately.