Replacement blades usually cost around 20 30.
How to replace bearings in attic fan.
Not all attic fans have ball bearings.
The purpose of ball bearings is to make the fan run.
Use a screwdriver and gently pry the bearings out from the motor housing seals.
Replace all the parts.
Is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with.
Lift the bearings from the housing with your fingers once the bearings are loose.
There are many replacement blades available on amazon.
Tap the motor a few times with the handle end of a hammer or piece of wood as if you were swatting a bug.
Do this carefully and don t scratch the seals.
Each half has two bearings one at the front and one at the back.
Inside you ll find the ball bearing assembly and can evenly coat each bearing with the oil.
Trouble shoot repair roof mounted attic fan.
Once the fan is re installed run it at normal speed until the sound disappears signaling that the bearings have fully re oiled themselves.
With fan off go into the attic.