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.

判斷發(fā)動機(jī)的水溫是否過高，主要是看發(fā)動機(jī)水溫表，發(fā)動機(jī)的水溫表表示的是發(fā)動機(jī)冷卻液的溫度，溫度的正常范圍是在60℃-100℃之間，如果超過了這個溫度，表示發(fā)動機(jī)水溫太高了。

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.

造成發(fā)動機(jī)水溫高的原因：

Causes of high engine water temperature:

1、散熱器出現(xiàn)堵塞

1. The radiator is blocked

如果散熱器上污垢過多或出現(xiàn)堵塞的話，會影響散熱器的散熱效果。

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

2、散熱器內(nèi)防凍液水位過低

2. The antifreeze level in the radiator is too low

此時需要檢查副水箱的水位，如果水位低于警戒值的話，需要及時補(bǔ)充防凍液。

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、水管損壞，水泵吸入空氣

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

水管出現(xiàn)損壞，水泵吸入了空氣，導(dǎo)致輸送冷卻液出現(xiàn)不足。導(dǎo)致散熱效果下降。

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、水泵損壞，水泵皮帶太松了

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

水泵被損壞了，會導(dǎo)致不能將冷卻液輸送到散熱器中進(jìn)行散熱，如果是水泵皮帶太松了，就會導(dǎo)致輸送水量不足的情況。

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、節(jié)溫器被損壞了

5. The thermostat is damaged

節(jié)溫器的工作原理：當(dāng)冷卻溫度低于規(guī)定值的時候，節(jié)溫器感溫體內(nèi)的石蠟會呈現(xiàn)固態(tài)，節(jié)溫器閥在彈簧作用下會關(guān)閉發(fā)動機(jī)與散熱器之間的通道，冷卻液會經(jīng)過水泵進(jìn)入發(fā)動機(jī)內(nèi)部，進(jìn)行發(fā)動機(jī)內(nèi)的小循環(huán)；當(dāng)冷卻液溫度達(dá)到一個規(guī)定值后，石蠟開始融化逐漸變成液體，體積會壓迫推桿，推桿對閥門的反推力可以使閥門被開啟，此時冷卻液進(jìn)入散熱器會進(jìn)行一個大循環(huán)。

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.

一旦節(jié)溫器被損壞的話，就會導(dǎo)致散熱系統(tǒng)只進(jìn)行一個小循環(huán)，冷卻液不能進(jìn)入散熱器。小編提醒大家，在排查發(fā)動機(jī)的系統(tǒng)故障時，我們要本著先易后難的原則，先排查維修比較簡單的故障點，再排查維修比較難的故障點。

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.