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A/C blower motor oiling

moneypitfeeder
moneypitfeeder Member Posts: 252
in A-C, Heat Pumps & Refrigeration

Wondering if anyone has ever run across a GE model 5XBPO42D 1/3 HP furnace blower motor. It has stamped on the front to reoil with SAE 10 every (light/medium/heavy): 25000 hrs/3 yrs/1 yr. I don't see any oil ports or plugs, but I might not be looking in the correct spot. Just wanting to know if I have to pull the thing down and disassemble it or if there might be a plug I'm missing. Or do we let sleeping dogs lie? It doesn't make any unusual sounds, no smoke, and we only operate it on the hottest summer days. We heat using steam, so it sits turned off all spring, fall, and winter.

blower motor.jpg
model.jpg

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Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,876

    Somewhere on the bearing housings — not on the ends — there will be a small hole (may or may not have a cap) which is intended for oil. Without looking at the side of the thing, I couldn't say for sure. But it's there.

    A little oil. Don't get carried away.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    ChrisJ
  • mattmia2
    mattmia2 Member Posts: 10,955

    Are these the oil holes for different orientations or are those for some sort of mount with index pins?

    image.png

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,495

    If it says oil then there are usually oil ports one on each end of the motor. They could be behind the resilient motor mounts where you can't see them.

    Easiest way would be to take the screws out of both resilient mounts and pull the motor out where you can see things. This would prevent having to unbolt the motor and getting it out of alignment. When you remount the motor position the oil holes at 12 oclock.

  • ratio
    ratio Member Posts: 3,791

    I expect those are not oil holes. This may be, however:

    blower-motor.jpg

    EBEBRATT-Ed
  • JUGHNE
    JUGHNE Member Posts: 11,279

    If you loosen the screws on the clamps and rotate the motor in place clockwise as you look at the picture, you might see the ports.

  • moneypitfeeder
    moneypitfeeder Member Posts: 252

    Thank you, gonna go take a look with a mirror, the yellow arrow looks promising.

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  • moneypitfeeder
    moneypitfeeder Member Posts: 252
    edited June 14

    Yep, the yellow arrow marked the spot(s) one on each end. Thank you! Last question…is Supco Zoom Spout Oiler MO98 an appropriate oil to use? I can't find it's SAE info. Edit to say, I found another extendable spout one at Grainger that is clearly marked SAE 10 machine oil, so I'll go with that. Buck cheaper too. Thanks again for all your help!

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  • mattmia2
    mattmia2 Member Posts: 10,955
    edited June 14

    Either one is fine. You can also get sae 20 nodetergent oil at the hardware store as 3 in one motor oil.

    Air tool oil is usually sae 10 but it really doesn't mattter here.

  • mattmia2
    mattmia2 Member Posts: 10,955

    If it hasn't been done in 20 years then probably add several drops. Don't over do it but don't under do it either. Just a drop or 2 if you're doing it every year.

    Check for side play up and down and side to side on the motor shaft while you're in there.

    moneypitfeeder

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