It s far easier and only slightly more expensive to simply buy a new computer or an attic fan in this case.
Remove attic fan blade.
Attic fans serve a different function removing the hot and moist air from the attic and leaving the space below the attic floor alone.
Clean the large debris first.
If you can reach a wrench in between the pulley and the motor try turning the shaft while holding the wheel.
Motor 93009317 and fan blade fb99100 for 1050 and 1200 cfm.
But if you insist on trying i use rust buster on those.
Removing fan blade take the setscrew out completely and stash it someplace where it won t go astray.
Unplug and remove the fan from the window.
Remove loose matter from the fan parts with a paper towel or microfiber towel.
Also if sponge rubber was used to support the frame remove that as well at this time.
Remove the old ventilation fan from its mounting by removing the lag screws or the nuts holding it in place using an adjustable wrench.
Also the motor is the most expensive part of the whole attic fan.
Shop for attic ventilator parts.
These fans circulate the air within the attic pulling fresh.
Separate the grill cover from the.
Trouble shoot repair roof mounted attic fan.
You probably won t fit through that gap with the blades off.
Place the new fan in position and secure it in place with the.
Can t remove attic fan blades from shaft.
Spray the rustbuster into the setscrew hole as well as at the spot both sides top and bottom where shaft and blade bore meet.
Locate the screws around the perimeter of the fan and open up the fan.
It s a lot more difficult to replace the motor then it is to replace smaller parts like the fan blades.
If there are fasteners attaching the whole house fan to headers or joists use your socket wrench screwdriver or pry bar to remove them before removing the fan.
