What Causes High Water Temperature in Excavators?
2 Answers
Reasons for high water temperature in excavators include: failure of the coolant circulation water pump, which prevents water in the radiator from circulating, leading to high temperature; the excavator's radiator surface being covered with dust and mud, blocking the cooling channels and reducing cooling capacity, resulting in high temperature; use of unqualified coolant that clogs the radiator or insufficient coolant, causing inadequate cooling capacity and high temperature. Introduction to the Engine Radiator: The car radiator, also known as the heat exchanger, is a key component in the car's cooling system. Its function is to dissipate heat. The coolant absorbs heat in the water jacket, flows to the radiator where the heat is dissipated, and then returns to the water jacket to circulate, maintaining the temperature. It is a part of the car engine. Working Principle of the Engine Radiator: The radiator is a crucial component of a water-cooled engine. As an important part of the water-cooled engine's cooling circuit, it absorbs heat from the engine block to prevent overheating. Due to water's high specific heat capacity, the temperature does not rise significantly after absorbing heat from the engine block. Therefore, the engine's heat is transferred through the liquid cooling circuit, using water as the heat carrier, and then dissipated through large-area cooling fins via convection to maintain the engine's optimal operating temperature.
I've encountered the issue of high excavator water temperature several times, and the most common causes are insufficient or deteriorated coolant. When I used to operate excavators, the water temperature would often spike during heavy-duty work on construction sites. Once the cooling system leaks or gets contaminated, heat exchange efficiency drops. It's also important to check if the fan is spinning properly – a loose fan belt reduces airflow. Radiator blockage is another issue, as accumulated dust and mud impair heat dissipation. A failing water pump can cause poor coolant circulation, and a stuck thermostat is even worse as it can't regulate temperature. I remember one time during summer high-temperature operations, the water temperature got so high it was scalding to touch. When I stopped to check, the coolant was nearly dry. These failures can easily lead to engine overheating and total failure, so if you notice abnormal water temperature, stop immediately for inspection and repair. Regular maintenance and radiator cleaning are essential.
