一、有辆中型卡车变速器三、四档跳档,来厂修理时检修四次都不见效果。后拆检三、四档各齿轮,变速机构等部位都正常。在拆检三、四档叉轴,发现盖的自锁装置是弹头壳型式的,定位弹簧套在壳内,弹头顶部有磨损2毫米,由于缺此材料,就把自锁弹头壳和原定位弹簧换掉,改用8 First, there is a medium-sized truck transmission third and fourth stalls to the factory repair overhaul four times no effect. After the demolition seized three or four gear, gears and other parts are normal. In the dismantling of the third and fourth gear fork shaft and found that the cover of the self-locking device is the type of warhead shell, positioning the spring sleeve in the shell, warhead top wear 2 mm, due to the lack of this material, put the self-locking warhead shell and the original positioning Spring replaced, switch to 8