I've pulled and replaced several furnace fans. It can be a real nightmare to
get the blower wheel off the shaft, and get it back in. There is very
limited space, and it's real easy to bind the blower wheel on the housing.

Some blower motors have a couple long "straws" which allow you to add some
oil without tearing it all apart. Be sure to use the correct oil for
electric motors. The wrong oil is far worse than useless.

I remember the time about ten years ago, the blower fan in my trailer
started to squeal. Near to drove me out of the house. Good squirt of oil,
and it was fine. This at about 11 PM one night.

--

Christopher A. Young
This space intentionally left blank
www.lds.org
www.mormons.com


"Krystonia5" wrote in message
...
My home has a 14 year old Carrier Night and Day gas furnace. I've noticed
that
the motor makes a high frequency humming sound that doesn't sound quite
right,
I believe the motor is slightly out of balance, or is not adequately
lubricated. I have the owner's manual, and the procedure to remove the
motor,
clean and lubricate it, and put it back in sounds very straightforward.
But I
am hesitant to do it during the winter, in case I cause some problems when I
work on it. Has anybody done this themselves, and it is there any risk of
causing damage by inspecting, cleaning, and lubricating the fan assembly?
Or
should I just assume that some instability is normal, and wait until summer
when i can do the repair at my leisure and have time to fix it further if I
end
up causing more harm than good?

Thanks,
Paul