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一、膨胀箱下水管堵塞,散热器冷却水外溢一台BJ374型自卸车,装康明斯发动机(引进美国发动机)。该车行驶到50000Km时,发动机冷却系出现一种怪现象:行车中发现水温过高,经检查膨胀箱内无水,散热器内也缺水(缺10多升);膨胀箱和散热器加足水以后,水温即恢复正常;但再行车又出现上述现象,一天要多次加水才能保持正常水温;而在加足水以后检查膨胀箱和水箱都无漏水之处,机油冷却器也无油水相混的迹象。开始以为加水口盖封闭不严或节温器不能
First, the expansion tank clogged pipes, radiator cooling water spill A BJ374 dump truck, Cummins engine (the introduction of the United States engine). The car traveled to 50000Km, the engine cooling system a strange phenomenon: driving the water temperature is too high, after checking the expansion tank without water, the radiator is also short of water (lack of more than 10 liters); expansion tank and radiator plus After enough water, the water temperature is back to normal; but then driving again the above phenomenon, one day to add water to maintain normal water temperature; and after adding enough water to check the expansion tank and water tank are not leaks, oil cooler no oil Mixed signs. Initially thought to be closed lid seal or thermostat can not