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一台刚检修过的东方红-75型拖拉机,在作业中油温正常,但水温上升很快,一会儿就开锅。最初以为是检修时上、下水道的纸垫没有剪通,经检查正常。后从散热器注水口观察,发现在发动机工作时没有形成正常的循环水流,又怀疑是水泵叶轮与水泵轴的稳钉折断,经检查正常。由此推断可能是散热器管堵塞。拆下检查,果然如此。原因是平时加水不注意,检修时又未按保养规程对冷却系统进行清洗。
A newly repaired Dongfanghong -75 tractor, oil temperature normal during work, but the water temperature rose quickly, while boil. Initially thought of as maintenance, the sewer paper pad is not cut through, check the normal. After the radiator inlet observation, found that the engine does not work when the formation of a normal circulation of water, but also suspected that the pump impeller and the pump shaft steady nail broken, the inspection normal. This concludes that the radiator tube may be blocked. Remove the check, it is true. The reason is usually do not pay attention to water, maintenance and repair procedures did not follow the cooling system for cleaning.