搞好空气供给系统严密性的检查和空气滤清器的保养机车要在各种条件下作业，发动机外部到处都要受到泥砂与灰尘的侵袭。如果发动机空气供给系统不严密，空气滤清器工作性能不佳，带着尘砂的空气便会直接进入气缸内，形成研磨剂，加速缸套与活塞，气门与导管等零件的磨损，... Do a good job of checking the tightness of the air supply system and the maintenance of the air filter. Locomotives should work under a variety of conditions and the outside of the engine should be attacked by silt and dust everywhere. If the engine air supply system is not tight, the performance of the air filter is not good, the air with the dust sand will directly enter the cylinder to form the abrasive to accelerate the wear of the cylinder liner, piston, valve and other parts. .