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东风型内燃机车目前使用的M-3-A型给风阀,其调整阀在修理过程中有的几经研磨都不能达到规定的标准要求被迫报废。而且研磨也比较困难,在修复给风阀的过程中大部分时间都用在研磨调整阀上。这样既浪费人力物
Dongfeng diesel locomotive currently used M-3-A-type valve, the valve in the repair process and some grinding can not meet the required standards were forced to scrap. And grinding is also more difficult, in the process of repair to the air valve used in the grinding adjustment valve most of the time. This is a waste of manpower