Taking DF4B locomotive as an example, this paper analyses the reason of too low lubricating oil pressure in running diesel engine, and gives countermeasures for it.
以DF 4 B型机车为例，系统地分析了造成柴油机机油压力低的原因，并提出其判断方法和对策。
Finally a newly developed special running in oil is introduced, which aims to shorten the running in period and to guarantee the whole engine running in quality at the same time.
为了合理地缩短柴油机磨合时间，同时又提高柴油机的整机磨合质量，研制了新配方的专用柴油机磨合油。
Finally a newly developed special running in oil is introduced, which aims to shorten the running in period and to guarantee the whole engine running in quality at the same time.
为了合理地缩短柴油机磨合时间，同时又提高柴油机的整机磨合质量，研制了新配方的专用柴油机磨合油。
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