Sometimes drivers may find that the engine water temperature gauge of their loader always shows that the temperature is too high. What is the reason? Today, let's analyze the specific reasons for this phenomenon.

判断发动机的水温是否过高，主要是看发动机水温表，发动机的水温表表示的是发动机冷却液的温度，温度的正常范围是在60℃-100℃之间，如果超过了这个温度，表示发动机水温太高了。

To judge whether the water temperature of the engine is too high, mainly look at the engine water temperature gauge. The engine water temperature gauge indicates the temperature of the engine coolant. The normal range of temperature is between 60 ℃ - 100 ℃. If it exceeds this temperature, it indicates that the engine water temperature is too high.

造成发动机水温高的原因：

Causes of high engine water temperature:

1、散热器出现堵塞

1. The radiator is blocked

如果散热器上污垢过多或出现堵塞的话，会影响散热器的散热效果。

If there is too much dirt or blockage on the radiator, it will affect the heat dissipation effect of the radiator.

2、散热器内防冻液水位过低

2. The antifreeze level in the radiator is too low

此时需要检查副水箱的水位，如果水位低于警戒值的话，需要及时补充防冻液。

At this time, it is necessary to check the water level of the auxiliary water tank. If the water level is lower than the warning value, it is necessary to replenish antifreeze in time.

3、水管损坏，水泵吸入空气

3. The water pipe is damaged and the water pump sucks air

水管出现损坏，水泵吸入了空气，导致输送冷却液出现不足。导致散热效果下降。

The water pipe is damaged and the water pump sucks air, resulting in insufficient coolant delivery. This leads to the decrease of heat dissipation effect.

4、水泵损坏，水泵皮带太松了

4. The water pump is damaged and the water pump belt is too loose

水泵被损坏了，会导致不能将冷却液输送到散热器中进行散热，如果是水泵皮带太松了，就会导致输送水量不足的情况。

If the water pump is damaged, it will not be able to deliver the coolant to the radiator for heat dissipation. If the water pump belt is too loose, it will lead to insufficient water delivery.

5、节温器被损坏了

5. The thermostat is damaged

节温器的工作原理：当冷却温度低于规定值的时候，节温器感温体内的石蜡会呈现固态，节温器阀在弹簧作用下会关闭发动机与散热器之间的通道，冷却液会经过水泵进入发动机内部，进行发动机内的小循环；当冷却液温度达到一个规定值后，石蜡开始融化逐渐变成液体，体积会压迫推杆，推杆对阀门的反推力可以使阀门被开启，此时冷却液进入散热器会进行一个大循环。

Working principle of thermostat: when the cooling temperature is lower than the specified value, the paraffin in the thermostat sensing body will be solid, the thermostat valve will close the channel between the engine and the radiator under the action of spring, and the coolant will enter the engine through the water pump for small circulation in the engine; When the coolant temperature reaches a specified value, the paraffin begins to melt and gradually turns into liquid. The volume will press the push rod. The reverse thrust of the push rod on the valve can open the valve. At this time, the coolant will enter the radiator for a large cycle.

一旦节温器被损坏的话，就会导致散热系统只进行一个小循环，冷却液不能进入散热器。小编提醒大家，在排查发动机的系统故障时，我们要本着先易后难的原则，先排查维修比较简单的故障点，再排查维修比较难的故障点。

Once the thermostat is damaged, the cooling system will only have a small cycle, and the coolant cannot enter the radiator. Xiaobian reminds everyone that when troubleshooting the system faults of the engine, we should follow the principle of easy first and then difficult, first troubleshoot the fault points with relatively simple maintenance, and then troubleshoot the fault points with relatively difficult maintenance.