新购的小四轮拖拉机在投入正常工作之前,必须按规定进行规范磨合运转。通过磨合调试,使零件的摩擦表面研磨平滑,形成良好的能承受全负荷的较光滑表面,从而延长机器的使用寿命,并为以后的正常工作打下良好基础。新出厂的拖拉机有许多重要的配合件,如曲轴轴颈与轴瓦、气缸套与活塞环、中央传动齿轮副等,在制造过程中虽然经过了精细加工,但工作表面仍存有微观的凹凸不平,零件之间不能完全接触,实际 The newly purchased small four-wheel tractor must be standardized and put into operation before it can be put into normal work. Through running-in and debugging, the friction surface of parts is polished and smoothed to form a relatively smooth surface that can bear the full load, thereby prolonging the service life of the machine and laying a good foundation for normal work in the future. New factory tractor has many important parts, such as crankshaft journal and bush, cylinder liner and piston ring, the central transmission gear, etc., although in the manufacturing process after the fine processing, but there are still micro uneven surface of the work , The parts can not be fully in contact with the actual