Step by step guide on how an automotive fan clutch works. This article pertains
to all vehicles equipped with a clutch fan.
Step 1 - A fan clutch function is to engage the
fan blade to the shaft when heated which is mounted to the front of the engine attached
to the water pump. This clutch is constructed using silicone grease, and a temperature
sensitive coil spring that expands and contracts with heat from the radiator.