1问题的提出自SS4改进型机车在我段运行以来，随着运用时间的增长，其主变压器散热器漏油故障率越来越高（见附表）。每次故障后都必须扣车专修，更换散热器。这样，不仅劳动强度大、停时长，而且维修费用很高，给运输生产带来不良影响。附表主变压器散热器漏油故障统计表2原因 1 PROBLEM PROBLEMS Since the SS4 modified locomotive running in our segment, the leakage rate of the main transformer radiator has been increasing with the increase of operating time (see attached table). After each fault must be deducted car repair, replace the radiator. In this way, not only the labor intensity and the stopping time are long, but also the maintenance costs are very high, which adversely affects the transportation and production. Schedule Main Transformer Radiator Oil Leakage Statistics Table 2 reasons