How do I identify a Horton fan clutch?

Fan clutch part numbers are usually located in one of two places on the fan mounting surface. For on/off and two-speed drives, the part number may be on the front or back of the fan mounting disc. Other fan clutch manufacturers tend to put a printed sticker with the part number in a similar location on the drive.

Can a fan clutch be rebuilt?

You can rebuild your fan clutch with a seal kit to replace the damaged seals and fuse once the air supply issue is fixed. You may choose to completely rebuild your fan clutch as well.

How does an air operated fan clutch work?

A Fan Clutch engages the fan and makes it turn when the valve opens; it pushes the PFD (Piston Friction Disc) against the friction material and also sends air pressure to overcome a spring. It disengages when the valve is closed, which allows the solenoid to exhaust air and let the spring return.

How much does it cost to get a fan clutch replaced?

A fan clutch replacement cost will range anywhere from $75 to $200 for just the part, without the labor costs. When labor is accounted for in the overall fan clutch replacement cost, the total price can range between $285 to $500 to replace the fan clutch only.

How can you tell if your fan clutch is bad?

To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.

What controls the fan clutch?

Most fan clutches are filled with a silicone-based oil. The oil is held in an internal reservoir when the fan is disengaged. To engage the fan, internal valves open and allow the fluid to fill the working area of the clutch. This creates friction between the drive plate and the housing, causing the fan to spin.