*Well-made, delivered quickly, and easy to install with **Fastly.Cool** . I may be imagining it, but it seems quieter than the 14 year-old unit that I pulled out. Of course it was noisy at the end due to failed bearings, so hard to compare. :)*
Just a heads up on the allen wrench. My unit had a 4 bladed fan and required a 1/8" allen wrench. It's very hard to see so I had to use a mirror to figure out why the 4mm allen wrench wouldn't go into the set screw.
Very helpful video. Had to replace a motor with bad bearings. Fortunately, it was within the GAF warranty period, and they covered and quickly delivered a new motor. This left me to figure out how to install. The video is instructive, especially given that it provides the tool sizes needed and basic way to remove/reinstall. If this project was on my workbench, it would take two minutes, however 12 feet up in an awkward position in my attic was challenging. The main issue was getting the set screw loose on the fan. My old L shaped allen wrench was simply not long enough to get to the screw, so had to borrow a longer one. The rest of the job was easy. Two small points. Obviously had all the power off, so not sure why the presenter needed to undo the black-to-black wires (I didn't). Also, found that unless you seat the motor perfectly before you complete tightening the screws, the fan blades may hit the housing when they spin. I spun the blades a few times and adjusted the motor to assure this wasn't a problem. Hoping to get more than 4 years from this motor as I don't fancy having to ever do this again!
I followed the instructions given and they were pretty much to the T. It is a lot harder to remove the fan blade then described (depending on your position) but the 2 x 7/16 and 4mm Allen wrench measurements were spot on. I was able to just remove 1 bolt (maybe that's why the fan was so hard to set back up lol
Great video! I never thought of removing the fan blade first. I never knew it was that accessible. :) I always loosened up on the fan brackets, disconnected 1 nut and bolt from 1 bracket and slightly bent it to remove the fan. As a result, one bracket always seemed a little bent when done. :( Not mentioned in the video is that you do not have to take the nuts and bolts out of the brackets. The capacitor on the side of the motor made it difficult to get to that bolt. So I loosened that one, and I unscrewed the other 2 as far as possible as not to release from each other. I then used a slotted screwdriver to gently separate the two bracket halves. Then, with a slight tug toward me in the attic, the motor came out in my hands. Helpful Tools to remove the fan: • (2) 7/16 box wrenches • (1) 7/16 hex socket and ratchet • 4 mm or 5/32 inch Allen wrench • (1) slotted screwdriver to gently pry the brackets apart Safety tip: before turning the power back on, manually spin the blade by hand making sure that the blade clears the brackets. If the fan blade hits the brackets, loosen-up on the set screw and raise the blade to the highest position on the motor shaft. After adjusting the blade, do a final manual spin and confirm that the blade does not hit the bracket. Turn on power, adjust thermostat enjoy the coolness.
Thanks, easy install, used a 7/16 wrench along with the ratchet instead of adjustable. Was in a tighter space, easier with wrench. Not many tools needed.
My original motor didn’t have a run cap but the replacement motor does. Is voltage polarity important with this motor or will it work properly no matter which way the neutral and hot are wired
Hi, Matthew. It would depend on how your system is set up. We recommend contacting an electrical professional for assistance in replacing your fan. You can also speak with our experts at 1-800-211-9612 for guidance.
Great video, very informative. Nice that you have 16k views, therefore I wonder if these motors were defectively designed or cheaply made junk from mother China? I'd be more than willing to pay twice as much if it were made in America, because mine didn't even last one year, and all this hassle adds to the total cost of ownership. Thanks
Hi, there. We recommend you connect with our Warranty Claims department if you believe there was a material defect with this product. You may call them at 1-800-458-1860 or send an e-mail to warrantyclaims@gaf.com. You can also file claims 24/7 via our electronic claim form via this link: bit.ly/3s2OR2q
I have a Master Flow attic vent, and the model on the motor label is Y6L657A51L. The amp rating is 1.35. Can you tell me which Master Flow replacement motor model number this is? Thanks!
Ok folks is there anyone else out there like me? I watch these "how to videos" then go to inspect my stuff and then stare at it like a dear in headlights lol. Great video though! I went up into my attic which looks like a war zone, looked at what i thought was the thermostat THEN since my fan isnt working i had no idea which breakers its on........... what a nightmare lol
You go to your breaker box, and turn off the breaker you most think is the correct one. Go back to your attic to see if the attic fan is off. If it is off, it is the correct one. For safety sake, additionally flip the attic fan's switch in the attic to the off position.
This is all good unless you cant get the blade to come off the shaft!. Ours was seized on the shaft and we ended up getting a smaller blade than original and it's not working so well. If we could only find the right size blade to move more air. Cant seem to find them anywhere.
Hi, there. If there was a manufacturing defect, please reach out to our Warranty Team at 1-800-458-1860 or send an e-mail to warrantyclaims@gaf.com. You can also file claims 24/7 via our electronic claim form via this link: bit.ly/3s2OR2q
Hi, there. The location of the breaker box differs from home to home. We recommend getting assistance from a professional electrician if you need help locating it.
Seems to me those should use squirrel cage fans instead of 3 blade fans. A tad more expensive, but smoother, no end thrust on the motor, and much more efficient.
Thanks. I bet a squirrel cage would be impossible for an actual squirrel to get through. GAF should act on your post. Do you know a good source for replacement squirrel cage or centrifugal fan blowers?
Liked that it gave the bolt size and Allen key size. Watched other videos and none of them told the sizes
Great video, your knowing what to do makes this look easy. Thanks very much.
We're glad you enjoyed it, Tom!
*Well-made, delivered quickly, and easy to install with **Fastly.Cool** . I may be imagining it, but it seems quieter than the 14 year-old unit that I pulled out. Of course it was noisy at the end due to failed bearings, so hard to compare. :)*
My dude! This is exactly the video I needed to find today. Thank you for your instructions.
We’re glad you found the help you needed, Timothy!
Just a heads up on the allen wrench. My unit had a 4 bladed fan and required a 1/8" allen wrench. It's very hard to see so I had to use a mirror to figure out why the 4mm allen wrench wouldn't go into the set screw.
Very helpful video. Had to replace a motor with bad bearings. Fortunately, it was within the GAF warranty period, and they covered and quickly delivered a new motor. This left me to figure out how to install. The video is instructive, especially given that it provides the tool sizes needed and basic way to remove/reinstall. If this project was on my workbench, it would take two minutes, however 12 feet up in an awkward position in my attic was challenging. The main issue was getting the set screw loose on the fan. My old L shaped allen wrench was simply not long enough to get to the screw, so had to borrow a longer one. The rest of the job was easy.
Two small points. Obviously had all the power off, so not sure why the presenter needed to undo the black-to-black wires (I didn't). Also, found that unless you seat the motor perfectly before you complete tightening the screws, the fan blades may hit the housing when they spin. I spun the blades a few times and adjusted the motor to assure this wasn't a problem.
Hoping to get more than 4 years from this motor as I don't fancy having to ever do this again!
We appreciate your feedback, Frank.
I followed the instructions given and they were pretty much to the T. It is a lot harder to remove the fan blade then described (depending on your position) but the 2 x 7/16 and 4mm Allen wrench measurements were spot on. I was able to just remove 1 bolt (maybe that's why the fan was so hard to set back up lol
Great video! I never thought of removing the fan blade first. I never knew it was that accessible. :) I always loosened up on the fan brackets, disconnected 1 nut and bolt from 1 bracket and slightly bent it to remove the fan. As a result, one bracket always seemed a little bent when done. :( Not mentioned in the video is that you do not have to take the nuts and bolts out of the brackets. The capacitor on the side of the motor made it difficult to get to that bolt. So I loosened that one, and I unscrewed the other 2 as far as possible as not to release from each other. I then used a slotted screwdriver to gently separate the two bracket halves. Then, with a slight tug toward me in the attic, the motor came out in my hands.
Helpful Tools to remove the fan:
• (2) 7/16 box wrenches
• (1) 7/16 hex socket and ratchet
• 4 mm or 5/32 inch Allen wrench
• (1) slotted screwdriver to gently pry the brackets apart
Safety tip: before turning the power back on, manually spin the blade by hand making sure that the blade clears the brackets. If the fan blade hits the brackets, loosen-up on the set screw and raise the blade to the highest position on the motor shaft. After adjusting the blade, do a final manual spin and confirm that the blade does not hit the bracket. Turn on power, adjust thermostat enjoy the coolness.
Excellent video. I just did this. Kind of a PITA but got it done.
Thanks, easy install, used a 7/16 wrench along with the ratchet instead of adjustable. Was in a tighter space, easier with wrench. Not many tools needed.
We're so glad to hear the video helped your installation Pat! 😀
Well infromed video, right to the point, thank you
Thank you, Katherine! 😀
My original motor didn’t have a run cap but the replacement motor does. Is voltage polarity important with this motor or will it work properly no matter which way the neutral and hot are wired
Hi, there. Please give our MasterFlow experts a call at 800-755-9392, and they will be happy to assist.
Awesome video! As easy as you made it! THANKS
We're glad to hear that! 🙌
Very informative. Thanks! BTW, Are those 2x4 rafters with particle board? Must be a shed.
I just want to know if that conduit is going to create a sufficient ground if it's tight enough on the motor.
Hi, John. Please reach out to our technical experts to discuss this in further detail: 800-766-3411.
Hi, I have the Master Flow 3gpx power ventilator. Will the Dayton Motor Run Capacitor,15 MFD be a good replacement for the starting capacitor?
We have replied to your other comment.
I just installed this unit and it has a strong vibration. I guess the fan is out of balance. Is it possible to swap the fan from inside?
Hi, Matthew. It would depend on how your system is set up. We recommend contacting an electrical professional for assistance in replacing your fan. You can also speak with our experts at 1-800-211-9612 for guidance.
Great video, very informative. Nice that you have 16k views, therefore I wonder if these motors were defectively designed or cheaply made junk from mother China? I'd be more than willing to pay twice as much if it were made in America, because mine didn't even last one year, and all this hassle adds to the total cost of ownership. Thanks
Hi, there. We recommend you connect with our Warranty Claims department if you believe there was a material defect with this product. You may call them at 1-800-458-1860 or send an e-mail to warrantyclaims@gaf.com. You can also file claims 24/7 via our electronic claim form via this link: bit.ly/3s2OR2q
Same here, 21 months
Nice instructions, thank you
You’re welcome, Jim!
I have a Master Flow attic vent, and the model on the motor label is Y6L657A51L. The amp rating is 1.35. Can you tell me which Master Flow replacement motor model number this is? Thanks!
Hi, there. Our Master Flow team will be able to help you out! Give them a call at 800-755-9392.
This was great! Thanks!
We're so glad you liked it!
Very informative. Thank you
We're so glad to hear this!
I wish you would have showed more detail on how to hook the thermostat wires and where they go
We appreciate your feedback. Our technical team would be happy to answer any questions you have: 800-766-3411.
Ok folks is there anyone else out there like me? I watch these "how to videos" then go to inspect my stuff and then stare at it like a dear in headlights lol. Great video though! I went up into my attic which looks like a war zone, looked at what i thought was the thermostat THEN since my fan isnt working i had no idea which breakers its on........... what a nightmare lol
You go to your breaker box, and turn off the breaker you most think is the correct one. Go back to your attic to see if the attic fan is off. If it is off, it is the correct one. For safety sake, additionally flip the attic fan's switch in the attic to the off position.
This is all good unless you cant get the blade to come off the shaft!. Ours was seized on the shaft and we ended up getting a smaller blade than original and it's not working so well. If we could only find the right size blade to move more air. Cant seem to find them anywhere.
Hi, there. If there was a manufacturing defect, please reach out to our Warranty Team at 1-800-458-1860 or send an e-mail to warrantyclaims@gaf.com. You can also file claims 24/7 via our electronic claim form via this link: bit.ly/3s2OR2q
Which one is the breaker for that ?
Hi, there. The location of the breaker box differs from home to home. We recommend getting assistance from a professional electrician if you need help locating it.
Seems to me those should use squirrel cage fans instead of 3 blade fans. A tad more expensive, but smoother, no end thrust on the motor, and much more efficient.
Thanks. I bet a squirrel cage would be impossible for an actual squirrel to get through. GAF should act on your post. Do you know a good source for replacement squirrel cage or centrifugal fan blowers?
The motor bolt size could differ, in my situation it's 3/8, not 7/16.
If your breaker turned off you don't have to disconnect the black wires. Make it simple. If you're a MAN please do not wear gloves! BTW great video!
Code violation.....control box has to be above the fan.
If that's what local code calls for, you would have to follow that since local codes always supersede our installation instructions.