从1985年起,兵团从美国卡特彼勒公司进口了几十台具有80年代先进水平的推土机、挖掘机和铲运机。这批机械在兵团的农田水利、铁路公路、工民建筑和其它大型土石方工程中显示了巨大的威力,收到了良好的经济效益。目前,不少机械大都已使用7000—8000小时,多的则达10000小时以上,均未进行过大、中修。按生产厂家规定,工作4000小时后,应相继更换一些零部件。但由于进口配件周期长、价格贵,再加我们机型多、批量少、外汇又紧缺,因而不可能预先贮备比较齐全的配件。这样,机车在工作中,往往因为一、两个零件的失效或损坏而停止运转,耽误生产。面对这种严重影响生产的局面,迫使我们想方设法,田地制宜去探索修复进口机械的可行途径。几年来,我 Since 1985, the Corps has imported dozens of bulldozers, excavators and scrapers from the Caterpillar Company of the United States to the advanced level of the 1980s. This batch of machinery showed great power in the Corps farmland water conservancy, railway road, workers and civil engineering and other large earthwork projects, and received good economic benefits. At present, most machinery has been used 7000-8000 hours, while more than 10000 hours, were not carried out in large, medium repair. According to the provisions of the manufacturer, 4000 hours after work, should have to replace some of the parts. However, due to the long period of import parts, the price is expensive, plus we have more models, less volume, foreign exchange shortage, it is impossible to pre-stocking more complete accessories. In this way, locomotives often stop working due to the failure or damage of one or two parts during their work, which delays production. Faced with this situation that has a serious impact on production, we are forced to find ways and fields to explore possible ways to repair imported machinery. In recent years, I