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Old 08-13-2019, 09:45 PM   #1
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Squeaky bathroom fan

I have one of these and we are happy with it but it has started to squeak a bit when running at higher speeds. Can I put some lubricant on it or will this make things worse?

Looking for a lubricant suggestion as I dont want to replace the fan if I dont have to.Click image for larger version

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Old 08-14-2019, 08:10 AM   #2
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Quote:
Originally Posted by dbledan View Post
I have one of these and we are happy with it but it has started to squeak a bit when running at higher speeds. Can I put some lubricant on it or will this make things worse?

Looking for a lubricant suggestion as I dont want to replace the fan if I dont have to.Attachment 212325

Sure, drop some oil in the bearings if you can get to it. I had a hot water tank with a squealing/slow exhaust fan bearing that caused the hot water tank to throw fault codes and shut down. I oiled it monthly with a syringe and got 4 more years out of it.


I would remove power from it and use a small steel syringe to drop oil on the shaft just beside the bearing and the sides of the races as I manually spun the fan. I would do this to both bearings each time. The fan would then run silent and fast like normal for a month or so. Eventually the tank rotted out and I replaced it with that still bad bearing that tried to freeze up every 4-6 weeks.
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Old 08-14-2019, 08:19 AM   #3
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You are likely going to need to get to the shaft of the motor to lube it.
That may/may not require some disassembly but as mentioned, a drop of oil in the bearing(s) (usually brass) often cures a squeaky/slow running fan.

I've done this to heater fans, regular fans and all kinds of motors.
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Old 08-15-2019, 11:31 PM   #4
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Thanks! Any specific type of oil you suggest?
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Old 08-16-2019, 08:52 AM   #5
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Any good automotive motor oil or general household oil like 3 in 1.

WD-40 is not an oil.
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