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(一)故障产生和分布的规律随着东风3型内燃机车入我厂大修数量的增加,1978年度中变速箱发生质量故障的次数有所上升。据统计,从内燃机车进厂大修至投入运用走行3万公里这一期间,全年共发生质量故障6台次,占年度内燃机车检修数量的3％。其中,东风型1台次(已超过大修保证期),占年度东风型机车检修数量的0.6％;东风3型5台次,占年度东风3型机车检修数
(A) the law of fault generation and distribution With the increase in the number of overhauls of DF-3 diesel locomotives entering our factory, the number of gear failures in mid-1978 increased somewhat. According to statistics, a total of 6 quality failures occurred during the year, ranging from overhaul of diesel locomotives to over 30,000 km of in-service vehicles, accounting for 3% of the annual maintenance of diesel locomotives. Among them, Dongfeng type 1 (times overhaul guarantee period), accounting for 0.6% of the annual maintenance of Dongfeng locomotive; Dongfeng 3 type 5 times, accounting for the annual maintenance of Dongfeng 3 locomotive