一要预防压伤。修理中的农用车辆必须用三角木塞牢车轮胎，使用千斤顶顶起车辆后，还应加用支撑工具撑牢。放松千斤顶前，要注意周围是否有人和障碍物。检修液压车厢的管路时，倾斜的车厢支撑牢靠后才可进行。 二要预防烫伤。修理运转中的发动机时，注意防止风扇叶片打伤和高温 First, to prevent crushing. The agricultural vehicles under repair must use triangular corks to run the tires of the vehicle. After lifting the vehicle with jacks, they should also be supported by brace tools. Before relaxing the jack, pay attention to whether there are people and obstacles around. When repairing the hydraulic carriage, the inclined carriage should be supported securely before proceeding. Second, to prevent burns. When repairing a running engine, take precautions to prevent damage to the fan blades and high temperatures