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由于“禁止使用限度”的现行定义在时间的限定上的错误和容易造成扯皮现象，所以在实际工作中很难把握。零件或配合的使用期限决定于零件或配合的极限损伤。所达零件或配合到达使用期限的几种情况是直接影响机车的工作可靠性和铁路运输安全的。铁路运输生产特别强调安全，内燃机车段修规程中设立“禁止使用限度”也一直是以保证机车质量的可靠性和牵引列车的安全性为目的的。所以，在“禁止使用限度”的定义中应充分表达这一思想，并提出要求。使用“禁止使用限度”这一概念的正确方法应该是：根据零件或配合的现有状况，以及其磨损规律，依据禁止使用限度值来判断修与不修、修多还是修少。
Due to the fact that the current definition of “no use limit” is wrong in time and easy to cause the phenomenon of wrangling, it is difficult to grasp in actual work. The life of a part or fitting is determined by the part or mating damage. The condition of the parts or parts that have reached the end of their useful life directly affects the reliability of the locomotive and the safety of the railway transport. Special emphasis on railway transport production safety, diesel locomotive repair section set up a “no-use limit” has also been to ensure the reliability of the quality of trains and trains the safety of the train for the purpose. Therefore, the idea should be fully expressed and put forward in the definition of “no-use limit.” The correct way to use the notion of “no limit of use” should be based on the existing condition of the part or fitting, and its wear and tear, based on the prohibited use limit, to determine whether to repair, not to repair, to repair more or less.