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Old 11-03-2014, 04:42 PM   #11
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Best of luck keep us posted on what you find someone else may get this problem down the road.
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Old 11-03-2014, 04:59 PM   #12
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Will do! Thanks again for your input.
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Old 11-03-2014, 06:05 PM   #13
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Will do! Thanks again for your input.
One other idea, its not common but does occur randomly where the "thrust bearing" on the shaft fails and allows the shaft to drift down stream. Usually the spinning rotor comes in contact with the stationary housing. There's no danger but it will wear to the point of the shaft freezing. If you can get access to the shaft, either end, you can attempt to move it both directions in parallel and turn and see if it rubs.
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Old 11-03-2014, 07:34 PM   #14
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Sorry for all of the questions guys and thank you for bearing with me.

This is my 3rd RV and I know all furnaces are just plain loud so this may be completely normal. Anyways, this furnace, the fan has this weird high pitch noise while running. I can't really describe it but I have a link to a video I took yesterday.

The furnace performs as it should and it won't bother me as long as I know it is completely safe. I tend to be a worry wart about the furnace and I just lay there imagining the worst!

Crusader heater - YouTube

Definitely sounds like the fan is hitting something. Remember putting playing cards on your bicycle so they hit the spokes when you rode it?.......same thing....sounds like.
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Old 11-03-2014, 07:41 PM   #15
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One other idea, its not common but does occur randomly where the "thrust bearing" on the shaft fails and allows the shaft to drift down stream. Usually the spinning rotor comes in contact with the stationary housing. There's no danger but it will wear to the point of the shaft freezing. If you can get access to the shaft, either end, you can attempt to move it both directions in parallel and turn and see if it rubs.
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Definitely sounds like the fan is hitting something. Remember putting playing cards on your bicycle so they hit the spokes when you rode it?.......same thing....sounds like.
It does sound like it is making a little contact with something.

Yeah I am fine with it as long as it doesn't internally disintegrate and we die in a fiery explosion. I will dig around Saturday when we get there, hopefully I can locate the culprit.
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Old 11-06-2014, 08:16 PM   #16
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I had this same problem. There was a loose wire that was rubbing the squirrel cage. I pulled the wire away and secured it off tho the side after making a small repair to the worn wire insulation.



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Old 11-06-2014, 08:39 PM   #17
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Thanks thunderbird...hopefully mine will be the same
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Old 11-08-2014, 03:25 PM   #18
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Winner winner chicken dinner for those who said something was rubbing and bonus points to thunderbird. There was a wire hanging down in the blower. I pulled it up and secured it. I also noticed it was chafed some so I put some elec tape on there the best that I could in that small space. Thank you all again!
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Old 11-08-2014, 09:11 PM   #19
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Winner winner chicken dinner for those who said something was rubbing and bonus points to thunderbird. There was a wire hanging down in the blower. I pulled it up and secured it. I also noticed it was chafed some so I put some elec tape on there the best that I could in that small space. Thank you all again!

No playing cards??????.......Damn......missed another chicken dinner. ,
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Old 11-08-2014, 09:14 PM   #20
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Lol, no cards that I could see!
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