一东风EQ140型车的发动机,因挺杆衬套的承孔磨损后,衬套曾两次向下脱落,导致配气机构发出异响,为了简便有效地解决问题,我们采用了特制衬套的方法。如图所示,车制一个加长了的铸铁衬套,上端加工成凸缘状,抵在承孔的上端面,起轴向定位的作用。(由于自重作用,衬套不会向上窜出),使衬套不致因承孔磨损而向下脱落。经装复使用后,证明 A Dongfeng EQ140 car engine, due to wear bearing sleeve bushing, the bushing has two times down, resulting in abnormal sound issued by the valve body, in order to easily and effectively solve the problem, we use a special bushings method. As shown, a lengthened cast iron bushing is machined into a flanged shape on the upper end, abutting on the upper end face of the bearing bore, acting as an axial positioning. (Due to its own weight, the bushing will not rise upward), so that the bushing will not wear down due to bearing down. After being used repeatedly, prove