1. Check the heat pipe radiator. The excavator works in harsh environments all year round, so there is always a lot of dust and small debris blocking the heat pipe radiator of the hydraulic machine and the water tank heat pipe radiator, especially when the hydraulic machine pipe radiator is exposed for a long time. As long as the heat pipe radiator is blocked behind the water tank, attention should be paid to the exposure of the hydraulic machine heat pipe radiator.

2. Inspect the cylinder head gasket of the "Excavator Working Principle and Main Components". Check what water is in the water tank during the circulation process. This might be a foam. If so, what problems might there be with the engine's cylinder head?

3. Check the operating equipment of the pump and then squeeze the pipeline with your hand. If the squeezing feels very firm, it indicates that there is no problem with the pump. If it is easy to squeeze, it means that the circulation system of the pump is not good.

4. Check if the water tank cover is damaged. This can also cause the temperature to rise. Since the water tank is integrated, water can easily enter the water circulation system, resulting in a higher temperature.

5. Check whether the thermostat can be turned on or is stuck.

6. Check if the fan speed is faster and unable to keep up with the electric pulley. This is also the reason why the temperature tends to rise easily.

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