为什么要进行技术保养?拖拉机作业时,各运转部件常常会发生磨损,这虽然难以避免,但可以采取技术措施.降低其磨损程度。比如:及时清除空气滤清器积尘杯中的尘土,并洗涤滤芯。供应发动机的空气都经过净化,就能降低气门机构 Why technical maintenance? Tractor operations, the moving parts often wear, although difficult to avoid, but it can take technical measures to reduce the degree of wear and tear. For example: promptly remove dust in the air filter dust cup, and wash the filter. The air supplied to the engine is purified to reduce the valve train