The farm machine friends know that the tractor is easy to get sick after a long time.

Due to seasonal restrictions on agricultural production, agricultural tractors have short working hours and relatively long rest periods. If they are not well cared for at rest, the damage often exceeds the damage during normal work. Several diseases and preventive measures that are prone to long-term tractors are described below.

1. Tire deformation. After the tractor stops, its own weight is completely absorbed by the four tires, causing the parts touching the ground to withstand excessive pressure and deformation. The longer the tractor stops, the more difficult it is to recover the deformed parts, and the tires change from elastic deformation to plastic deformation. If the shape of the tire changes, that is, the tire loses balance, the body vibration will increase when the tractor is running, and the tire wear will be accelerated and the service life of the tire will be shortened.

Response: When parking for a long time, the tractor can be lifted, or the tractor can be moved back and forth every few days to prevent the weight of the tractor from being pressed at the same position of the tire for a long time to ensure that the tire is not deformed. In addition, the removed tires should be prevented from being squeezed during storage to prevent deformation.

2. Battery vulcanization. When the battery is not used for a long time, it will slowly discharge itself. If it is not charged in time, after excessive discharge, the active material on the plate gradually forms a thick and hard lead sulfate. The lead sulfate crystal has poor conductivity and large volume, which blocks the pores of the active material, hinders the penetration and diffusion of the electrolyte, and increases the internal resistance of the battery. At the same time, this lead sulfate is not easily converted to lead dioxide and spongy lead during charging. This lead sulfate loses its reversible effect, reducing the effective material of the plate, reducing the discharge amount, shortening the service life, and seriously causing the battery to be scrapped.

Response: If the tractor is not used for a long time, the vehicle should be started every 30 days or so, and the medium speed should be running for about 30 minutes. If there is a special charger, remove the battery, wipe the outer surface clean, fully charged, then apply Vaseline on the electric pile, put it in a clean and warm room, and charge it at least once a month during storage. Prevent vulcanization or cracking. Charging with a dedicated charger, the charging current should be selected properly, the charging time will be lengthened if the current is too small, and the battery will be damaged if it is too large. In addition, be sure to unscrew the battery cover when charging, and pay attention to ventilation. Do not use an open flame to approach the battery port being charged, because the hydrogen generated in the battery is easily deflagrated when charging.

3. Rubber parts are aged. After the rubber product ages, the performance deteriorates and the service life is significantly shortened. The rubber parts on the tractor are mainly tires, gaskets, dust jackets, etc. In the long-term storage process, due to exposure to sunlight, deformation by external force, contamination of oil, etc., these parts will accelerate the premature cracking, elasticity and strength reduction, and the surface layer becomes sticky or hardened and brittle.

Countermeasures: First, avoid direct sunlight, store in the warehouse, and use metal garage doors as much as possible; second, avoid rubber parts sticking to oil, if it is accidentally contaminated, it should be wiped clean immediately; third is to avoid long-term deformation .

4. Spring and transmission belt deformation. If the spring, the belt and other parts of the tractor are subjected to plastic deformation due to long-term stress, the original shape cannot be restored after the force is lost.

Response: All springs that are pressed or pulled on the tractor must be relaxed. For example, the intake and exhaust valves of the engine should be placed in the closed state; the handle of the clutch on the walking tractor should be placed in the "closed" position; Hanging on the wall.