新购买的小型拖拉机，偶尔会遇到主变速杆从拨叉槽中脱落的现象。但由于是新车，往往多数人都将变速杆总成重新安装后继续使用。当时问题好似解决了，岂不知仍存在变速杆重新脱落的隐患，甚至因变速杆无法操纵而危及到驾驶员的安全。一台河北—Ｗ１８０型拖拉机，在操纵主... The newly purchased compact tractor occasionally encounters a main gear stick missing from the fork slot. But because it is a new car, most people tend to re-install the shift lever assembly to continue to use. At that time, the problem seemed to be solved. Do you not know that there is still a hidden danger of the gear lever coming off again and even endanger the safety of the driver because the gear lever can not be manipulated? A Hebei-W180 tractor, the main control ...