拖拉机不仅是一种复杂的农业机械,而且工作环境很差,使用一个时期后,各零部件不可避免的要产生磨损、松动、堵塞、锈蚀、变形、老化以至损坏。结果使功率下降、油耗上升、排放增多、噪音增大。拖拉机的保养就是为了防止上述情况的发生,确保拖拉机在良好的状态下正常工作,减轻各零部 Tractor is not only a complex agricultural machinery, and the working environment is very poor, after a period of use, the parts inevitably have to wear, loose, blocked, rust, deformation, aging and even damage. As a result, power is reduced, fuel consumption is increased, emissions are increased, and noise is increased. Tractor maintenance is to prevent the occurrence of these conditions to ensure that the tractor in good condition to work properly to reduce the various parts