When the water temperature of the excavator engine is too high, it is necessary to take correct measures in time to solve it in order to avoid serious damage to the engine.
First of all, once the water temperature is found to be too high, the operation should be stopped immediately. Let the engine idle for a period of time to gradually reduce the temperature. If it continues to run at high load, it may cause serious faults such as cylinder pulling in the engine. For second-hand dealers, when purchasing second-hand excavators, they should pay attention to whether the equipment has had excessive water temperature in the past. If so, it is necessary to thoroughly check the cause and assess the potential damage to the engine. When selling second-hand excavators, customers should be clearly informed of the possible harm caused by excessive water temperature and the correct treatment methods, so that customers can deal with similar problems in time during use.
Checking the coolant is an important step. Check whether the coolant level is too low. If so, wait until the engine cools down to add an appropriate amount of coolant. At the same time, check whether the coolant is deteriorated or has impurities. If there is a problem, the coolant should be replaced in time. After purchasing a second-hand excavator, second-hand dealers can conduct a comprehensive inspection and replacement of the coolant to ensure that its quality meets the requirements. When selling, introduce the inspection cycle and replacement method of the coolant to customers, and remind customers to pay attention to the condition of the coolant regularly to ensure the normal cooling of the engine.
The inspection of the radiator should not be ignored. Check whether the surface of the radiator is blocked by debris, such as dust, leaves, etc. If so, it should be cleaned in time to ensure good heat dissipation. It is also necessary to check whether the heat sink of the radiator is deformed or damaged. If there is a problem, it needs to be repaired or replaced in time. Second-hand dealers can professionally clean and repair the radiator to improve the heat dissipation performance of second-hand excavators. When selling, emphasize the importance of radiator maintenance to customers, such as regular cleaning of the radiator, avoiding collision damage to the heat sink, etc.
The fan plays a key role in the heat dissipation process. Ensure that the fan is running normally and check whether the fan belt is loose or broken. If the fan does not turn or the speed is too low, check whether the fan motor, relay and other components are normal. For some excavators that use hydraulically driven fans, check whether the hydraulic system is normal and whether the hydraulic oil temperature is too high. When checking the second-hand excavator, second-hand dealers should carefully check the working status of the fan and repair or replace it in time if there is a problem. When selling, explain to customers the maintenance points of the fan, such as regularly checking the tightness of the fan belt and keeping the fan clean.
It is also important to check the thermostat. If the thermostat fails, it may cause poor circulation of the coolant and cause the water temperature to be too high. The thermostat can be placed in hot water to check whether its opening temperature is normal. If it is not normal, it should be replaced in time. When purchasing and selling second-hand excavators, second-hand dealers should check the working condition of the thermostat to ensure its good performance. Introduce the role and failure manifestations of the thermostat to customers so that customers can find problems and deal with them in time.
It is also necessary to check the water pump. Water pump failure may cause poor circulation of the coolant, thereby increasing the water temperature. Check whether the water pump has problems such as water leakage and abnormal noise. If there is a problem, it should be repaired or replaced in time. Second-hand dealers can conduct professional inspections on the water pump to ensure that it works properly on the second-hand excavator. When selling, introduce customers to the maintenance knowledge of the water pump, such as regularly checking the sealing and working condition of the water pump.
In addition, pay attention to the use environment and operation methods of the excavator. Avoid long-term continuous operation in a high-temperature, high-load environment, arrange working hours reasonably, and give the engine proper rest. When operating an excavator, avoid bad operating habits such as sudden acceleration and deceleration to reduce the engine load and heat generation. Second-hand dealers can provide customers with usage suggestions to help customers extend the service life of second-hand excavators and reduce the probability of failure.
In short, when the water temperature of the excavator engine is too high, effective measures should be taken in time to deal with it. In this process, second-hand dealers can provide customers with reliable second-hand excavators through professional inspection, repair and maintenance suggestions, and ensure that customers can correctly deal with the problem of high water temperature during use.