1问题的提出16V240ZJB型柴油机机体与油店壳间的橡胶石棉垫的作用是防止机油漏泄。然而，据不完全统计，1989年8月～1993年12月，我段东风‘型机车发生了6台次油底壳势破损，破损部位在柴油机机体、油底壳、大油封三者的结合边缘（图1）。发生该故障的机车检修、运用情况如表1 1 PROBLEM PROBLEM The role of rubber asbestos pad between 16V240ZJB diesel engine body and oil store shell is to prevent oil leakage. However, according to incomplete statistics, from August 1989 to December 1993, six sub-sea oil casing damage occurred in the section of Dongfeng-type locomotive. The damaged parts were found in the combination of the diesel engine body, the oil pan and the large oil seal Edge (Figure 1). Occurrence of the fault locomotive maintenance, the use of the situation in Table 1