Spray some lubricant wd 40 or similar into the air ports at the top bottom of the air holes in the fan housing for about 3 to 5 seconds.
How to replace bearings in attic fan.
There are many replacement blades available on amazon.
Not all attic fans have ball bearings.
Once the fan is re installed run it at normal speed until the sound disappears signaling that the bearings have fully re oiled themselves.
Tap the motor a few times with the handle end of a hammer or piece of wood as if you were swatting a bug.
With fan off go into the attic.
It s a more affordable fix than getting a new attic fan.
Trouble shoot repair roof mounted attic fan.
Do this carefully and don t scratch the seals.
Use a screwdriver and gently pry the bearings out from the motor housing seals.
The purpose of ball bearings is to make the fan run.
Replacement blades usually cost around 20 30.
Is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with.
So if your s doesn t you can skip this step completely.
Inside you ll find the ball bearing assembly and can evenly coat each bearing with the oil.