我县新河乡一台江淮—50型拖拉机在发动机大修后,不能作业,原因是发动机开锅。该机驾驶员检查了水泵、节温器,故障没有排除;然后又对发动机冷却系整个水道进行了清洗,发动机仍开锅。驾驶员前往我单位求援。首先我们起动发动机,从发动机的声音来判断其工作情况是正常的。接着把水箱上水槽的水放掉,把水箱的散热芯露出水面,在发动机运转情况下,从水箱的加水口处观察水泵 I County, a new River Township JAC-50 tractor engine overhaul, can not work, because the engine boil. The pilot checked the pump, thermostat, the failure did not rule out; and then the entire engine cooling water system was cleaned, the engine is still boil. Driver to my unit for help. First of all, we start the engine, the sound from the engine to determine its work is normal. Then the water tank on the tank let go of the water, the radiator tank out of the water surface, in the case of engine operation, water tank from the water inlet to observe the pump