Lincoln F6AZ-8A616-AA Clutch Assembly - Fan

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The engine-driven fan is checked by inspecting the fan blades for cracks and damage, checking for symptoms of fan clutch failure such as noise, looseness, vibration, and fluid leaks, and testing for excessive bearing play by rocking the fan back and forth. The fan should turn freely when the engine is cold. If there are substantial fluid leakage or deformed bi-metal spring in the clutch assembly, or if the fan turns too easily, the fan clutch should be replaced. Removal and installation involve disconnecting the lower radiator hose and removing the fan shroud bolts to access the fan and clutch assembly. The fan clutch is loosened or unbolted from the water pump, and the drive belts are removed from the water pump pulley on some engines. The fan assembly is unbolted from the water pump, and the fan clutch can be removed from the fan blade assembly for replacement. For electric fans in later models, operation is controlled by the power train control module and relays. Continuous fan operation may indicate a fault with the relays or the coolant temperature sensor. To check the electric fan, the electrical connectors are disconnected, and voltage and ground continuity are tested at the fan connector. Removal of the electric fan assembly involves disconnecting the electrical connector and removing the fan assembly and shroud as a unit, then removing the fan blade from the motor.