When the Dongfeng Sprinkler 's engine is in operation, the cooling water temperature is basically maintained at 80 °C -90 °C. If the water temperature is too high, the alarm will alarm. When we hear the alarm, we must first decelerate, and then see the sprinkler on the side of the road, remember not to rush to shut down the engine, because the water temperature is too high, it will lead to pistons, steel walls, cylinders , crankshaft and other temperatures are too high, the oil becomes thin and loses its lubricating effect. If the flame is turned off at this time, the parts are in an inflated state and the clearance of each accessory is very small. After shutting down, some soft metals fall off, and some may even cause sticky cylinders. Therefore, after opening the pan, do not turn off the flame immediately. Instead, temporarily maintain idle speed and try to cool down.
Do not pour cold water on the engine when cooling. This may cause the engine block to burst due to sudden cooling. The correct way is: Wear gloves, then add a piece of folded wet cloth on the lid of the tank, gently twist the lid of the tank to open a small seam, wait for the water vapor to drain slowly, and then add cold water after the tank pressure drops. antifreeze.
   The high water temperature of the engine of the sprinkler is basically due to the breakage of the fan belt, the leakage of the water tank or the water pipe, the failure of the thermostat, and the leakage of the oil. If the water power of the sprinkler disappears or the sound of violent knocking and knocking is transferred during driving, it is mostly because the engine is overheated.
    How do we normally check and repair the sprinkler engine overheating?
1. If the temperature is too high or the temperature indicator keeps blinking, check whether the cooling water in the tank is normal and whether there is any leakage in the tank, the water pipe and the joints. If no abnormality is found through the surface inspection, the cooling water can be supplemented as required before continuing the driving. If the temperature is still too high after driving for a certain distance, the cooling water is reduced after the parking inspection. This is mostly because the water jacket of the cylinder block has blisters or perforations and is lost. After this fault is discovered , maintenance should be performed.
2. When the engine temperature is too high, you can use the hand to touch the temperature of the water pipe and the underwater pipe to determine the fault. If the temperature difference between the two pipes is large, it can be judged that the thermostat does not work, and if it is not available on the way The emergency thermostat can be removed and replaced immediately after the unit is returned.
3. If there is air in the cooling system, air resistance will be formed, causing poor circulation of the cooling water, resulting in excessive engine temperature. The following methods can be used to deflate : Let the engine run at a high speed, and gently open the tank cover until gas is just released. At this time, some cooling water will flow out with the gas , so repeatedly, until you feel that the gas has been discharged ( At this time, the temperature of the water pipe will be significantly different when it is touched by hand. ) After the fault is removed , the cooling water should be replenished promptly.
4. If the sprinkler runs on dirt roads or muddy roads for a long time, there will be some dirt stuck on the radiator. Over time, it will affect the heat dissipation effect , resulting in the water temperature is too high, you can use the compressed air to blow the radiator grille , and then Rinse with a hose.
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