Fan Clutch Explained

Learn what makes a viscous fan clutch operate.

Hunter fan gilmour. A fan clutch is designed to cool the engine when it becomes too hot and on the verge of overheating. This is done at low engine speeds while limiting the top speed of the fan to a predetermined maximum level at higher engine speeds. With this blog we attempt to explain how the horton fan clutch works what maintenance it requires and more importantly what to keep an eye on.

Does a fan shroud make difference cooling fan clutch operation sante understanding fan clutches and when it s time to replace cooling fan noise at cold start vehicle information model fan clutches for. The fluid in the clutch gets thicker as it heats up causing the fan to spin faster to catch up with the engine rotation. The horton fan clutch is important for the functioning and operation of your truck.

This type of clutch is a lot like the viscous coupling sometimes found in all wheel drive cars. A fan clutch is attached to the front of an engine on rear wheel drive cars and trucks only. This clutch is positioned at the hub of the fan in the airflow coming through the radiator.

A horton fan clutchs prime function is to engage and disengage the engine fan with a clutch controlled by an air. The coupling allows the fan to be driven in a normal manner. When a fan clutch goes bad there can be is a loud roar.

Detailed animations show internal components. Yet it is often overlooked and is among one of the least maintained components. Bolted to the water pump between the water pump pulley and flange the clutch fan turns at engine speed and is driven by the serpentine belt.

Viscous fan clutch advice. The thermal viscous fan drive is a silicone fluid filled coupling used to connect the fan blades to either the engine or the water pump shaft. As temperatures increase the clutch engages so that the fan is driven by engine power and moves air to cool the engine.

These clutches are featured on forward facing engines only and are used in place of an electric fan though they do the same job. The horton fan clutch has an important function in a trucks operation yet it is one of the most overlooked and least maintained components. Understanding fan clutches and when it s time to replace.

This important part of the cooling system is used to pull air though the radiator when the car is stopped or. How fan clutches work explained in under 5 minutes. A fan clutch is a temperature controlled coupling between the water pump shaft and the fan which allows the fan to be operational at low speeds and disconnected at higher speeds.