每年冬季,各地都会发生拖拉机程度不同的冻坏事故。冬季温度降到0℃以下时,夜间停车或长时间停驶的拖拉机、农用运输车都必须放尽冷却水。否则,冷却水结冰体积增大会冻坏水箱、机体、缸盖等,从而造成很大损失,这个道理大家也许都知道。但很多驾驶员误认为,水箱放水只要打开放水开关就行了,其实不然,由于冷却系构造复杂,有些通道狭窄,很难放尽冷却水,从而易造成局部冻裂。那么放冷却水时应该 Every winter, different types of tractors experience freezing damage. Winter temperatures dropped below 0 ℃, the night parking or long-term tractors, agricultural vehicles have to give up cooling water. Otherwise, an increase in the volume of cooling water will freeze the water tank, body, cylinder head, etc., resulting in great losses, this truth we may know. However, many drivers mistakenly believe that the water tank can be turned on and off by just turning on the water discharge switch. In actual fact, due to the complicated cooling system and the narrow passages, cooling water is difficult to dissipate, leading to local frost cracking. Then put the cooling water should be