现象：一台ＫＡＴＯ７００挖掘机在运转约８０００ｈ时，驾驶员感到回转部分连续抖动，且低速、高速回转均有此现象，而其他动作均正常。为避免故障范围进一步扩大，我们对该机进行了检查。诊断：本着先易后难，先外后内的原则，按照以下步骤进行分析：①检查回转支承固定... Phenomenon: When a KATO 700 excavator is running for about 8000 hours, the driver feels that the rotating part continuously shakes, and the low speed and high speed rotation have this phenomenon, and other actions are normal. In order to avoid further expansion of the fault scope, we conducted an inspection of the aircraft. Diagnosis: Following the principle of “difficulty in the first place,” first and foremost, follow the following steps to analyze: 1 check the slewing bearing fixation ...