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How to Mount an Electric Fan

2010 July 25
by admin

While we’ve made our application-specific electric fans a breeze to install, a universal fit fan isn’t something to be afraid of, either. It’s usually easier to install than you might think. There a number of approaches, and we’ll walk you through a couple in this article.

Before we dive in, we invite you to click here to check our list of application-specific electric fans to see if we make one for your vehicle. If not, we’ll assume you have measured your radiator and found the Flex-a-lite electric fan that will fit best (if not, click here for more information to help you choose the correct Flex-a-lite electric fan).

You can use the mounting brackets we provide with our universal electric fans or fabricate your own. First, we’ll look at mounting the fan using the brackets we supply. Attach the brackets to the fan using the screws provided. The fan shroud has a rubber bulb around the perimeter that seals it against the radiator core and cushions both the radiator and the fan. Holding the fan in position, look at various possible locations for the brackets to attach to the radiator frame or the core support. Most radiators have a frame or mounting flange that is suitable for fan mounting. Don’t use the header plate for mounting, I did that once and it tore the header off the car! Also, make sure that you are not drilling into the water tank or the radiator core! Mark holes where the brackets will mount on the vehicle. Remove the fan and drill the holes. Use the hardware supplied to mount the fan. See, pretty simple!

Our brackets are designed to  make mounting easy, but for a custom appearance, you can make your own brackets to fit your application. This will require some basic metal-working skills. Typically, a length of angled aluminum or sheetmetal is cut to length along either the top and bottom, or the sides of the fan. These brackets should be made from material thick enough to hold the fan and withstand vibration found in an automotive application. Align the custom brackets to the fan housing and drill three to four holes along the sides. Use bolts with nylocks or rivets to attach each bracket to the fan shroud. Align the brackets to the radiator frame or core support, mark and drill holes as described above.

This video helps demonstrate the two mounting options that we have discussed here:
[youtube=http://www.youtube.com/watch?v=bmDg1tK98m4&hl=en_US&fs=1]

Whether you use our brackets or make your own, check that the fans spin freely by hand and that there are no hoses that can come into contact with the blades before making the electrical connection. Next you can wire the fan using one of our three controllers; the #31147 Cooling Control Module (which allows you to adjust the temperature that the fan turns on),  #31165 Variable Speed Control module (which operate the fan at 60 to 100 percent power and let you adjust the temperature that they turn on) or a #31148 for cockpit control.

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