In summer, as the weather gets hotter and hotter, many excavator operators will begin to frequently encounter a difficult problem, that is, the engine temperature of the excavator is too high, especially in the high temperature environment in summer. High engine temperature is a common phenomenon, but it does great harm to the performance of the machine. What is the reason for this situation and how to deal with it?
1. Observation
If the engine temperature is too high or the temperature indicator keeps flashing, stop and check to see if the cooling water in the water tank is normal. Whether there is leakage at the water tank, water pipe and joints. If no abnormality is found through the appearance inspection, make up the cooling water as required before continuing the work.
If it is still found that the temperature is too high after working for a period of time, the cooling water is greatly reduced during shutdown inspection, which is mostly due to sand holes or perforation in the water jacket of the cylinder block. After finding this fault, repair the excavator.
2. Touch
When the engine temperature is too high, you can touch the temperature of the upper and lower water pipes to judge the fault. If the temperature difference between the two water pipes is very large, it can be judged that the thermostat does not work. If the accessories cannot be purchased temporarily, the thermostat can be removed for emergency and replaced immediately after the accessories are purchased.
3. Bleed
If there is air in the cooling system, air resistance will be formed, resulting in poor cooling water circulation and excessive engine temperature. The following methods can be used for bleeding: let the engine run at high speed, gently unscrew the water tank cover until the gas is just released. At this time, some cooling water will flow out with the gas. Repeat this for many times until you feel that the gas is discharged. At this time, the temperature of the upper and lower water pipes will be significantly different. After troubleshooting, the cooling water shall be supplemented in time.
4. Flushing
If dirt adheres to the radiator, over time, it will affect the heat dissipation effect and cause the water temperature to be too high. First blow the radiator grille with compressed air and then flush it with water pipe.
