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1998年 8月，陕西省扶风县城关镇案板村农民张功兴购买了一台 170型小四轮拖拉机。当年 11月中旬，在运沙石途中，突然拖拉机发出异常响声，他便立即仃车检查，发现发动机曲轴已经断裂。他马上找到厂方驻当地农机公司的“三包”维修人员。经检查被告知：是曲轴有质量问题。于
In August 1998, Zhang Gongxing, a farmer in Kebannian Village, Chengguan Town, Fufeng County, Shaanxi Province, purchased a 170-wheel four-wheel tractor. In mid-November of that year, on the way of transporting gravel, suddenly the tractor made an abnormal noise and immediately he checked the car and found that the crankshaft of the engine had broken. He immediately found the factory in the local agricultural machinery company “Three Guarantees” maintenance staff. After inspection was told: is the crankshaft quality problems. in