由于工作条件恶劣,东方红—60推土机的一、二速滑动齿轮(14～19齿)较易损坏,尤其是一速齿轮更易磨损、剥皮。过去此零件奇缺,我们曾用东方红—54拖拉机的一、四速(14～21齿)和二、三速(17～19齿)滑动齿轮切割后拼焊,虽能解决问题,但费工、费料。近两年,我们直接用东方红—54的二、三速滑动齿轮代替东方红—60推土机的一、二速 Due to poor working conditions, the Dongfanghong-60 bulldozer one, two-speed sliding gear (14 to 19 teeth) more easily damaged, especially the first-speed gear easier to wear, peeling. In the past, the spare parts were scarce. We used the first and fourth speed (14 ~ 21 teeth) and the second and third speed (17 ~ 19 teeth) sliding gears of the Dongfanghong -54 tractor to cut and weld, which could solve the problem. Workers, fee materials. In the past two years, we use the Dongfanghong -54 second and third speed sliding gear instead of Dongfanghong-60 bulldozer of the first and second speed