1. The tire is penetrated by the root rust of the crop in the field. If the leak is not serious at the time, do not pull out the root recommendation and drive the tractor out of the field slowly. 2. The valve cover on the tire is lost. Can cut a piece of soft plastic tube, one end of the fire with soft, pinch, the other end can be placed on the valve can be. 3. The valve chamber cover gasket made of cork material is brittle, easy to break when carried, and soaked with water, it becomes flexible and easy to carry. 4, high pressure tubing connector leakage. A round piece can be cut from the waste cylinder pad, and the middle oil pipe joint is small, and it can be solved by inserting it between the boss and the pit of the high-pressure fuel pipe joint. 5. The copper pipes on large and medium tractors are not suitable for bending. When correcting, the part to be corrected can be burned red, and then quickly into the cold water, the copper tube can become soft and easy to bend. 6 When dismantling a small diesel flywheel, the nuts will not be removed after the nut is loosened, and there will be no accident that the flywheel will fall and injure others. 7. The mud dirt in the rotor oil filter is not easy to eliminate. If a layer of paper is stained with grease on the inner wall of the filter rotor, the dirt will be attached to the top. When the paper is peeled off during maintenance, cleaning is much easier.