挖掘机用柴油机在工作过程中常常由于机件磨损松旷、修理质量不高、调整不当等原因而发出各种异响。准确判断异常响声并及时排除故障,对于保证挖掘机的良好技术状态和安全使用有非常重要的作用。判断柴油机异响的方法有经验法和仪器测试法两种。在油路和润滑良好的情况下,应首先判明异响是来自内部还是外部,在内、外部均有多种异响的情况下,一般采用先外后内、先易后难的顺序。若外 Excavators with diesel engines in the work process often due to mechanical wear and loose Kuang, repair quality is not high, improper adjustment and other reasons issued a variety of abnormal sound. Accurately determine the abnormal noise and timely troubleshooting, for the excavator to ensure the good technical status and safe use has a very important role. There are two methods for judging abnormal sound of diesel engine: experience method and instrument test method. In the case of oil well and lubrication, should first determine whether the abnormal sound from internal or external, both inside and outside the case of multiple abnormal sound, the general use of the first outside after the first easy to difficult order. If outside