My daughters gas furnace keeps her up at nites, she says the vibrations trough the ductwork is driving her batty I checked the ducts could not find anything loose or rubbing anything I opened the furnace and observed the blower motor while it was running and at startup there is some vibration, but how much is normal I don't know. I tried to remove the motor for a better look but could not get the squirrell cage off the shaft it had at one time shifted off the flat spot but is plenty secure, my question is how to remove the blade from the shaft or is some vibration normal. thanks for any help. ken
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