东风2012号机车架修后,曾多次发现柴油机反水。开始用一般的试水压法寻找不良处所,水压5公斤/厘米~2,保持20～30分钟,未均能找出。后来我们用充气法解决了反水问题。具体做法如下: 1.关闭与柴油机水系统相联的联络阀,并将柴油机内的冷却水放出。 2.拆下第一水泵进水管及与柴油机热水集流管相联的机车热水回水管。再用橡胶垫及 Dongfeng 2012 locomotive frame repair, has repeatedly found that diesel engine water. Start with the general test pressure method to find bad places, water pressure 5 kg / cm ~ 2, to maintain 20 to 30 minutes, can not find out. Later, we used the inflation method to solve the water problem. Here’s how it works: 1. Close the liaison valve associated with the diesel engine water system and drain the cooling water from the diesel engine. 2. Remove the first water pump inlet pipe and diesel locomotive water heater connected to the hot water return pipe. Reuse rubber pads and