Excavators often have various failures in daily use. Some faults can be repaired and handled by yourself. Some faults need to be repaired by maintenance personnel. Whether it is self maintenance or maintenance personnel maintenance, the excavator may be damaged due to the lack of experience in adopting the wrong maintenance methods. The excavator is composed of various precision parts. Therefore, it is difficult to judge and eliminate excavator faults. Some maintenance personnel adopt the method of replacement test. As long as the parts that may cause the failure are considered, replace them one by one. In the end, not only the fault was not eliminated, but also the parts that should not be replaced were replaced at will, increasing the maintenance cost. There are also some faulty parts that can be repaired and their technical performance can be restored without complex repair processes. However, the maintenance personnel asked the user to replace new parts. During maintenance, carefully analyze and judge the cause and position of the fault according to the fault phenomenon. For the repairable parts, the repair method shall be adopted to restore the technical performance. If it is determined that it cannot be repaired, replace it.
