When do I change the clutch on my fan?

Click to expand… mine does too. but i never had mine replaced. i ignore it. With a fan cluthc your fan will rotate constantly regardless. The clutch engages and locks the blade to it so that it spins faster than normal the hotter that it gets. The only time that your fan will not spin is when the motor is off.

What makes a fan spin with a cluthc?

With a fan cluthc your fan will rotate constantly regardless. The clutch engages and locks the blade to it so that it spins faster than normal the hotter that it gets. The only time that your fan will not spin is when the motor is off. It is a common misconception that the fan will only spin when the clutch engages. Click to expand…

Why did I need to replace the clutch on my truck?

All I know is that, before the fan clutch was replaced, the truck never overheated with the plow off, with the plow on it would get hot at highway speeds and I would have to come to a stop in order for the fan to really kick in!

Is it good to have a HD clutch?

A HD clutch is a positive in the case of plowing. You are also cooling your transmission and that will help extend it’s life. One thing to keep in mind is that if you are hearing it run fully engaged when you first start the truck, this is normal.

What’s the difference between standard and heavy duty fan clutches?

Standard-Duty Thermal Fan Clutch: This design turns the fan at 60-70 percent of the water pump shaft speed when engaged, and 20-30 percent when disengaged. It’s made for fans with a lighter pitch. Heavy-Duty Thermal Fan Clutch: This fan style turns the fan at 70-90 percent of the shaft speed when engaged for increased cooling.

Is there a time when the fan does not spin?

The only time that your fan will not spin is when the motor is off. It is a common misconception that the fan will only spin when the clutch engages. With a fan cluthc your fan will rotate constantly regardless. The clutch engages and locks the blade to it so that it spins faster than normal the hotter that it gets.

When do you know it’s time to replace the fan clutch?

According to Hayden, here are some signs your fan clutch might need replaced: Fan spins excessively when engine is stopped (three or more times when hot engine is shut off). Poor A/C performance at idle or low vehicle speeds. Fan speed does not increase when engine is hot.

What causes a car fan clutch to go bad?

Insufficient heat in winter is another common problem but caused by the opposite fan clutch failure. If the fan clutch seizes, it remains engaged all the time, cooling off the engine too much. Excess fan noise at high speed is caused by the same problem, a seized fan clutch.

How can you tell when a fan clutch is engaged?

You should be able to audibly detect when the fan clutch engages, with an accompanying rush of air. At idle, as engine temperature increases, a thermal fan clutch will engage at a certain temperature. Torque-limiting fan clutches will disengage at a certain engine speed. Alternatively, an optical tachometer can be used to measure fan speed.

When do I change the clutch on my fan?