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View Full Version : tight bearings in air handler blower motor question



dlginfla
07-22-2016, 11:14 AM
I'd like to get a second opinion on this one please. ???

call was no indoor blower running got there and motor was real hot
and bearings real tight, moves but just dragging bad. It will barley
make it around one rev with a hand spin.

Went and got a new blower motor out of the truck came back in
and decided I should properly condemn it first so tested cap and
it was bad, motor ohmed out good, changed the cap threw power on
and motor works great.

Let it run about 15 mins. no heating up, Lennox 3/4 HP blower
pulling 4.5 amps matches nameplate exact. Am I done here??

I am concerned about the tight bearings do you think it will die soon?
It's a lot of $ to change it if it doesn't need it.

Cbr9680
07-22-2016, 11:39 AM
Its probably not going to last much longer if it is dragging that bad. I would inform the homeowner of my findings and recommend changing the motor.

mrkelly
07-22-2016, 07:34 PM
Up & Down.......
Hot bearings are tight,which is why they lock up.
Let cool a bit and then SEE.
Ahhh. the infamous Lennox 3/4. Upflow WILL require a 4' 2x4 and a Horiblezontal is just that and you 'best go TO Lennox and get the Right replacement as the 'erector set 'frame' will Not fit ANY a'market Replacement.
Got the motor wiring 'plug in'? Likely.