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Tractors should be "inspected" during the winter
Due to the increase of tractor load during autumn harvest, the limit of travel of the shift shaft is often changed or broken, resulting in skipping. The main reason is the failure of the gearbox locking mechanism and the operating mechanism. If the half ring-shaped positioning groove on the fork shaft is worn and the lock spring force is insufficient, the locking mechanism will be invalidated, and the damaged parts should be replaced at this time. If the fork is seriously worn or bent, and the ball at the bottom of the shift lever is seriously worn, the shift stroke will be affected, and the meshing position of the working gear pair will be inaccurate, resulting in skipping. At this time, the hydraulic lifter cover should be removed, and the travel limiter plate of the shift shaft should be replaced, and the fork shaft and the shift fork should be checked for damage or bending, and the damaged parts should be corrected, welded or replaced. In the winter, it is necessary to conduct a comprehensive inspection and maintenance of the starter system and the oil circuit. To promptly eliminate the sudden increase in fuel consumption, the sudden increase in fuel consumption of diesel engines is often due to leakage of fuel systems, lack of cylinder pressure, improper adjustment of various parts of the carburetor, and poor state of spark plugs and distributors. When the gearbox is used for too long, the internal shaft and bearing have a large amount of wear, and each gear surface also wears accordingly. When the gear pair meshes and operates, it will not be stable and a periodic knocking sound will be emitted. At this time, the gearbox should be disassembled, and the causes should be ascertained one by one to replace the damaged parts.