在哈尔滨站下行场担任调车作业任务的哈尔滨机务段JF605号和JF290号两台机车,自从1978年与减速顶发生接触以来,虽然轮缘顶部磨耗比较严重,但都保持在一个架修期内未曾提前旋轮,在凋车作业中未曾发生任何问题。几年来这两台机车曾经13次去牡丹江按期进行架修或厂修,其中只有JF605号机车第一次 Harbin Railway Station Yard as a shunting task Harbin locomotive depot JF605 and JF290 two locomotives, since the contact with the deceleration top in 1978, although the top rim wear more serious, but remain in a repair period Did not advance the wheel, in the operation of the car did not have any problems. Over the past few years the two locomotives have been to Mudanjiang 13 times scheduled repair or factory repair, of which only the first JF605 locomotive