中心回转接头漏油的修g该机在新机使用近一年时出现回转支承外围渗漏液压油现象。开始漏油不很严重，继续使用约半年后漏油现象日趋严重，最后发展到每天漏几千克液压油的程度。因该机回转支承部位上下车均为封闭结构，无法直接观察到泄漏点，在排除了各管接头漏油的可能性后， Repair of oil leakage in the center swivel joint. The machine has leaked hydraulic oil on the periphery of the slewing bearing when the new machine is used for nearly one year. The beginning of oil leakage is not very serious, and oil leakage is becoming more and more serious after about six months of continuous use. Finally, the amount of hydraulic oil leaking to a few kilograms per day has been developed. Due to the closed structure of the slewing bearing of the aircraft, it is impossible to observe the leakage point directly. After eliminating the possibility of oil leakage from each pipe joint,