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我场四队一台刚经大修过的上海-50型轮式拖拉机,工作才20多个小时,就发生了排气管排机油,一缸的缸筒下部破碎,导致曲轴不能转动的故障。起初我们认为是活塞环装错或缸筒质量有问题。经检查并没有发现任何异常现象。
I field four teams a just overhaul of the Shanghai -50 wheeled tractor, only 20 hours of work, the exhaust row of oil occurred, the lower cylinder cylinder broken, leading to crankshaft can not turn the fault. At first we think there is a wrong piston ring or cylinder quality problems. After examination did not find any anomalies.