The fan belt is a critical transmission component in a truck engine cooling system. It connects the crankshaft to the fan, water pump, and other pulleys, driving the fan to provide forced air cooling for the radiator and engine. High-quality fan belts are made of high-strength rubber and tensile-resistant cords, possessing characteristics such as high-temperature resistance, wear resistance, and smooth transmission. If the belt ages, loosens, or breaks, it will directly cause the engine to overheat and potentially lead to cylinder scoring. Regular checks of belt tension and surface condition are recommended to ensure driving safety.
