Remove Attic Fan Blade

Motor 93009317 and fan blade fb99100 for 1050 and 1200 cfm.

Remove attic fan blade.

Remove the old ventilation fan from its mounting by removing the lag screws or the nuts holding it in place using an adjustable wrench. Attic fans serve a different function removing the hot and moist air from the attic and leaving the space below the attic floor alone. It s like replacing a processor in an old computer. Separate the grill cover from the.

These fans circulate the air within the attic pulling fresh. 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. It s a lot more difficult to replace the motor then it is to replace smaller parts like the fan blades. You probably won t fit through that gap with the blades off.

Also the motor is the most expensive part of the whole attic fan. But if you insist on trying i use rust buster on those. Is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with. If you can reach a wrench in between the pulley and the motor try turning the shaft while holding the wheel.

Locate the screws around the perimeter of the fan and open up the fan. Let it sit for 10 20min and apply more. Removing fan blade take the setscrew out completely and stash it someplace where it won t go astray. Also if sponge rubber was used to support the frame remove that as well at this time.

Shop for attic ventilator parts. Clean the large debris first. Trouble shoot repair roof mounted attic fan. 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. Place the new fan in position and secure it in place with the.