夏天怎样正确使用拖拉机夏天气温高，雨水多，空气湿度大，这对拖拉机都是不利的。那么，夏天怎样正确使用它呢？一、做好冷却系的清洗保养。夏天天气炎热，冷却系的散热应良好，否则发动机过热将会降低机件强度，产生裂纹或变形；也会使润滑油变稀，粘度小，造成润滑不良... How to properly use the summer tractor summer high temperature, rain, air humidity, which is detrimental to tractors. So, how to use it properly in summer? First, do a good job of cleaning and maintenance of the cooling system. Summer hot weather, the cooling system should be good heat, or the engine overheating will reduce the strength of the machine, resulting in cracks or deformation; also make the oil thinning, low viscosity, resulting in poor lubrication ...