手扶拖拉机牵引框上的插销孔和插销磨损后,使插销和插销孔配合间隙增大,主机和拖车失去总体平衡,极易出现仰头或低头等不正常现象,给手扶拖拉机驾驶员带来操作困难,其主要有:1.由于牵引框插销和插孔之间的配合间隙增大,使发动机所处的位置发生改变,易发生以下一些 Tractor tractor frame on the pin hole and latch wear, so that the pin and pin hole with the gap increases, the host and the trailer lost the overall balance, prone to head or bow, and other abnormal phenomenon, to the tractor driver belt To operate difficult, its main are: 1. As the drawing frame and jack plug with the gap between the increase, so that the location of the engine changes, prone to the following