有一台东风—12型手扶拖拉机,工作中出现了自动向右转弯的故障。当捏住左边转向手把试图校正前进方向时,拖拉机立即停止前进。拆卸后发现,右边转向齿轮和中央传动减速齿轮的牙嵌都有较大程度的磨损,可是更换这两个齿轮后故障并没有排除。于是我们又更换了该轴(转向轴)两端的轴承(已严重磨损)和两个转向弹簧 There is a Dongfeng -12 walking tractor, the job appeared automatic turn right fault. When pinch the left steering handle attempting to correct the heading, the tractor stops immediately. Disassembled and found that the right steering gear and the central transmission reduction gear jaws have a greater degree of wear and tear, but the replacement of these two gear fault has not ruled out. So we replaced the shaft (steering shaft) at both ends of the bearing (has been severely worn) and two steering springs