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Thread: pully question

  1. #1
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    pully question

    does anyone have a link or data sheet on how to properly remove those pullys with the 3 bolts on the front used on high rpm fans and motors? I know how to get em off but its not the right way and it never goes back on how I want it too????

  2. #2
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    Dont you use a stator puller, like atv puller? Or tap on the bolts when loose and the pulley separates, one of them two.

  3. #3
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    Quote Originally Posted by Joehvac25 View Post
    Dont you use a stator puller, like atv puller? Or tap on the bolts when loose and the pulley separates, one of them two.
    you lost me with the stator-atv talk, I think it has other holes so you can tighten the bolts back into to seperate it, it just never seems right

  4. #4
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    Those pulleys use the bolts to push the pulley off the pulley bushing.

    There should be additional holes on the bushing to do that with.

    Make sure you tighten them a little at a time rotating from bolt to bolt and use plenty of Wd-fourty.

    Also a soft mallet works to help loosen the pulley on the bushing.

    They're easier to remove than put back and re-align.

  5. #5
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    Quote Originally Posted by Six View Post
    Those pulleys use the bolts to push the pulley off the pulley bushing.

    There should be additional holes on the bushing to do that with.

    Make sure you tighten them a little at a time rotating from bolt to bolt and use plenty of Wd-fourty.

    Also a soft mallet works to help loosen the pulley on the bushing.

    They're easier to remove than put back and re-align.
    That's what I meant. Haven't seen one in awhile and couldn't remember.

  6. #6
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    Quote Originally Posted by Six View Post
    Those pulleys use the bolts to push the pulley off the pulley bushing.

    There should be additional holes on the bushing to do that with.

    Make sure you tighten them a little at a time rotating from bolt to bolt and use plenty of Wd-fourty.

    Also a soft mallet works to help loosen the pulley on the bushing.

    They're easier to remove than put back and re-align.
    ya its the aligning part I wondered if there was a better way

  7. #7
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    Aligning is a matter of having done it a few times. I figure about 1/8 inch or so of movement onto the taper as I tighten the bolts, maybe a little less. So, it is an estimate of where to place the hub on the shaft, depending on where you want the pulley to end up when finished.

    As you can see from the attached file, the maker doesn't really address the alignment issue, only that it should be aligned.
    Attached Images Attached Images
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  8. #8
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    Quote Originally Posted by hvacmike85 View Post
    does anyone have a link or data sheet on how to properly remove those pullys with the 3 bolts on the front used on high rpm fans and motors? I know how to get em off but its not the right way and it never goes back on how I want it too????
    We use Pully Partners to laser align them

  9. #9
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    A good old straight edge for alignment. Been doing it that way for years.

    As far as alignment like Time said it may take a few tries.

  10. #10
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    If alignment was good when you started just measure the distance from hub to shaft end. If you are re-aligning or starting fresh it's usually a little trial and error. Remember keep the taper portion clean and free of any oil or dirt.

  11. #11
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    Those are a pain. Just takes a little patience and wd

  12. #12
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    Jul 2012
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    If the pulleys are already aligned - I take a triangular file and file a small mark on the shaft right in front of the bushing. Pull the bushing, change/replace sheave' then reassemble with.the bushing on the line and your usually in good shape.

    Was also.taught to.check alignment with a string. Pull a string from the outside edge of your sheaves/pulleys and look at how it makes contact on the inside edges of the sheave. Gaps between the string and the sheave show where and how much out of alignment it is.

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