1.挂档难 ,摘档也难一台新的小四轮拖拉机 ,在使用中出现了二档难挂 ,三档难摘的故障。为此拨动变速杆变换档位进行检查 ,感到变速杆比较沉重 ,但未卡死。又打开变速箱盖检查 ,没发现各零件有问题 ,只是发现添加的齿轮油太多 (是正常数量的两倍多 ) ,变速滑杆的左、右盖内也充 1. Hanging file difficult, pick files is also difficult A new small four-wheel tractor, appeared in the use of second gear hard to hang, third gear difficult to pick the fault. To this shift dial shift gear shift inspection, feel the gear lever heavier, but not stuck. Also opened the gearbox cover inspection, did not find the parts have problems, just found that adding too much gear oil (which is more than twice the normal number), variable speed slider left and right covers also charge