受某施工单位的委托，我公司接收了一台俄产平地机的大修任务。该机己使用八年，主要存在以下几个方面的问题： （１）后桥左右轮胎工作时打滑，差速器失灵。 （２）行车制动失灵，后桥平衡箱输出轴轴承间隙大，轮胎晃动，制动器内有油漏出。 （３）挡位压力低，变矩器四油压力 Commissioned by a construction unit, our company received a Russian-made grader overhaul task. The aircraft has been used for eight years, mainly in the following aspects: (1) around the rear axle tire slip when working, the differential failure. (2) service brake failure, balance axle box rear axle bearing clearance, swaying tires, brake oil leakage. (3) gear pressure is low, the torque converter four oil pressure