Repair/Replace Furnace Fan

Old 12-30-13, 06:33 AM
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Repair/Replace Furnace Fan

So unfortunately, I'm hear again this winter :-(

I recently had to replace a blower motor. We installed it and got it to run. Last night, I hear a loud scrapping sound and then the blower doesn't work! I thought the motor had gone out again.

Anyway, I removed the belt from the fan to the blower motor and found that the motor still worked. Then, tried turning the fan and it scrapped and made grinding sounds. Looking closer, I noticed that the axle bar had moved out... I pushed it back in and then the fan spun smooth and fine. I put the belt on again and it ran fine.... for a few minutes. Then, I started to hear small sounds, then bigger, then loud scrapping again.

Okay so here's the issue. The axle moves back and forth and is very loose. I was able to stop some of the movement by moving and tightening the end piece, but it's still loose... the fan will come on... stay good for a while, but eventually start the sounds again. In addition, when I tightened it again this last time, and started it, the blower started cycling on/off (as described in a previous post).

So.... I'm at a loss for what to do. Can I repair the fan? Can I replace the fan with another fan? If I replace the fan, does it have to be the exact model as is in the furnace now? Or can we retro-fit? I don't think I can get an exact replacement soon (old model furnace). If I can repair the fan... HOW?


Thank you
Old 12-30-13, 10:58 PM
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We really don't know what you are working with there. You didn't leave a make, model or pictures.

It sounds like you are having a problem with the blower shaft bearings.

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