针对本钢运输部新购进的GK1C型内燃机车所用的NPT5型空气压缩机,介绍了在机车实际运用、检查修理中所经常遇到的泵风慢、有异常声响、振动大、油压低、出气管和气缸盖温度特别高等疑难故障的判断与处理方法,对机车的运用保养和检查修理中快速排除故障,降低机车“库停”时间,提高机车运用率具有指导意义。 NPT5 air compressors used for newly purchased GK1C diesel locomotives by Bengang Steel Co., Ltd. introduced the problems of slow pump wind, abnormal noise, large vibration and low oil pressure which are often encountered in the actual operation and inspection of locomotives , The outlet pipe and the cylinder head temperature particularly difficult to determine the fault diagnosis and treatment methods, the use of locomotive maintenance and inspection and repair to quickly troubleshoot, reduce the locomotive “library stop ” time, improve locomotive utilization rate of guidance.