Today we will discuss another problem of excavator engine heat. Engine heating is a common fault and head scratch.. there are many reasons for high temperature, and sometimes it is difficult to find the root of the problem at once. Analyze common causes and solutions for high temperature of excavator engine
In general, the basic causes of high-temperature engines can be divided into two categories: one is the defective engine cooling system, the most common of these problems, and the other is its own engine failure, which causes excessive heat and the cooling system is not timely. Hot, such a fault is more difficult to solve.
Type I: the cooling control system is prone to malfunction
First, check the coolant level: if the coolant is insufficient, it will directly lead to insufficient cooling capacity. This is the best check and solution
Secondly, check whether the radiator is blocked: due to the harsh environment, the sand worm flocs are easy to block the pores. If found, you can carefully wash the radiator with an air gun or a water gun. Do not use heated water to wash the radiator at an angle to avoid deflection of the radiator.
3、 Check the belt of radiator fan: if there is no fan, the belt tension is not enough, or the belt is seriously worn and aging, it will affect and cause the belt to slip. The result analysis is that the working speed system of the fan is not enough, and the heat dissipation technical capacity is continuously reduced Introduce yourself a little trick: if the belt is used to adjust the proper tension, and the upper plane of the belt is flush with the outer surface of the pulley or even sags, you can replace the belt
Check the circulation of the water tank: if the coolant is dirty, 80% of the cooling system is blocked.. at ordinary times, two bottles of white vinegar can be added to make up water. After idling for half an hour, the water can be discharged and re added to the water for circulation release.. if the color is still very muddy, add two bottles of vinegar again and repeat until the water becomes clear.
5、 Check the pump: This is relatively simple. If the water temperature is low when the water tank cover is opened, check the engine and observe the fluctuation of the water tank.
6、 Check the thermostat: the thermostat is a little thing that people love and hate. In summer, we suffer a lot from it. In winter, we have no it, so many people learn in the driving laboratory like an ice cellar The inspection and analysis of the thermostat is relatively simple. Take it down and put it into the boiling water. Observe the opening angle of the students. If it cannot be too small or it is faulty, ordinary enterprises can temporarily remove the thermostat,
Type II: abnormal engine heating
7、 Insufficient power of engine and overload of engine: if the excavator is overloaded, the engine will generate extra heat to keep inside the vehicle, which will cause a great burden on the cooling system.
8、 Check the engine for faults: the fuel supply timing is wrong, the fuel injection quantity is artificially increased, resulting in poor combustion, the intercooler performance is invalid, the injection pressure is abnormal, and the poor lubrication of the crank and connecting rod mechanism causes excessive trade friction resistance, which will cause the machine to emit heat far beyond its designed heat dissipation technical capacity, and the heat dissipation management system has exceeded its maximum capacity, resulting in high temperature of the machine. It is difficult for ordinary people to solve such faults, We need to find a professional engine repairman
