In the operation of Caterpillar excavators, the stability of water temperature is crucial for the overall performance and lifespan of the equipment. Understanding and mastering the normal water temperature range of Caterpillar excavators and determining whether they are in a high temperature state are basic knowledge that every machine owner or operator should possess. Generally, the normal operating water temperature of Caterpillar excavators should be maintained between 80°C and 95°C, but there may be slight differences in equipment of different models and specifications. It is recommended to refer to the specific model's operation manual for accurate data. When the water temperature of Caterpillar excavators exceeds 100°C, it can be considered to have entered a high temperature state. In such cases, problems with components such as the cooling system, water pump, thermostat, or radiator may occur, requiring timely inspection and maintenance to prevent engine damage due to overheating. To prevent high water temperature in Caterpillar excavators, in addition to regular maintenance, it is also necessary to ensure that the coolant is sufficient and of good quality, avoid long periods of high-intensity continuous operation, and adjust the operation time and intensity appropriately in extreme hot environments. In summary, monitoring and maintaining the appropriate water temperature of Caterpillar excavators is an important aspect of extending mechanical service life and reducing failure rates. Once the water temperature approaches or exceeds 100°C, it is considered to be in a high temperature warning state and immediate measures need to be taken to address it.