How to conduct the reason analysis and judgement of spillover of diesel locomotive expansion tanks using the Exclusive Method and the In-pipe Pressurized Air Method was presented.

• 阐述了如何利用排除法和“管路压力空气法”对内燃机车膨胀水箱涨水的故障进行原因分析和判断,由此延伸,提出了静液压系统进入空气导致管路振动和回油压力大故障的解决方法。