手扶拖拉机牵引框销孔的改装手扶拖拉机牵引框，一般使用不到一年销孔就磨损严重。使拖拉机起步时容易闯动，行驶中上下摇摆难以掌握驾驶，增加了驾驶操作难度和危险系数。如果一年要更换一个牵引框，一个牵引框现价４０～５０元，经济上不合算。现介绍一种牵引框改装方法... Tractor traction frame dowel pin hole modification Tractor traction frame, the general use less than a year pin hole on the wear and tear. So that the tractor easy to break in starting, driving difficult to grasp the driving up and down, increasing the difficulty of driving operations and the risk factor. If you want to change a traction frame a year, a draft frame price of 40 to 50 yuan, economically uneconomical. Now introduced a modified method of drawing box ...