东风-12型拖拉机配用的S195型柴油机断平衡轴的事故较多,据我们对10多次事故的现场分析,其原因大致有以下几点: (1)机体上妥装上、下平衡轴轴承的座孔磨损,使205轴承在座孔内作轴向位移。 (2)机体两侧的同一平衡轴轴承座孔同轴度超差,或平衡轴两端轴颈同轴度超差。 (3)平衡轴轴向间隙超过规定 Dongfeng -12 tractor equipped with S195-type diesel engine off the balance shaft more accidents, according to our on-site analysis of more than 10 accidents, the reasons are as follows: (1) the body should be fitted on the balance shaft Bearing seat hole wear, 205 bearings in the seat hole for axial displacement. (2) the same balance on both sides of the body bearing bore hole coaxial over tolerance, or shaft balance over the shaft at both ends of the poor. (3) balance shaft axial clearance exceeds the specified