Sutorbilt 3M shaft wiped

Discussion in 'The Hardware' started by carpetcleaner, Aug 30, 2017.

  1. carpetcleaner
    carpetcleaner

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    It looks like the keyway somehow broke and wiped out the shaft on the blower. Can the shaft be replaced? There aren't many hours on this blower, so I would like to fix it.

    The same thing happened to a different TM years ago. There were over 4 thousand hours on it, so I just replaced the blower.
  2. sOOper hero
    sOOper hero

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    can't answer whether replacement is cost effective or not....

    but curious, did the shaft keyway channel actually chip/break?
    Or the shaft got scored up from a sheared key?

    ..L.T.A
  3. carpetcleaner
    carpetcleaner

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    The keyway is broken in half and the last 3/4 inch of the shaft is in 3 pieces.
  4. FredC
    FredC

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    I know it can be replaced. Years ago I knocked the shaft out of a lobe of a 4mp for someone here on the forum but for the life of me I can't remember who it was. I seem to remember it ended up being different than the one he needed.

    Finding one would probably be the biggest issue unless you have an old blower laying around.

    Seems like it would be more of a pita than it is worth.
    Last edited: Aug 31, 2017
  5. Onfire_02_01
    Onfire_02_01

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    Yes you can, but check with local dealers as a brand new one may not be all that much more than all the parts and all the labor.

    3 pieces I am impressed! Can we get a picture? You could sell it as mechanic porn.
  6. Mark Saiger
    Mark Saiger

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    A lot of places are finding it just best to replace....

    Not much more money by the time a person is done vs just buying new....sadly to say....
    Matt Wood likes this.
  7. Lee Stockwell
    Lee Stockwell

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    A used 3M should be cheap and plentiful. Banes use them.
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  8. clean image
    clean image

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    I bought one from some one on here... that shaft got tore up

    1 welded my pulley and coupler on.
    sOOper hero likes this.
  9. sOOper hero
    sOOper hero

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    that sounds like a down 'n dirty solution that spared a whole lot of headache and expense

    ..L.T.A.
  10. steve_64
    steve_64

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    KIMG0537.jpg $300 plus shipping and it's yours
  11. carpetcleaner
    carpetcleaner

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    I'm pulling the blower off to see if a welder can fix it

    Is this in working condition?
  12. steve_64
    steve_64

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    It came off a working Baneclene. It spins free. Still has the pulley in it.
  13. dealtimeman
    dealtimeman

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    I would buy the one from steve
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  14. dgardner
    dgardner

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    Yes, buy the one from Steve.

    While the shaft can most likely be repaired by welding, it would require disassembly of the blower. For one thing, welding in place would wreck the seals from the heat, and the shaft also needs to be turned on a lathe to true it up once welded, and then set up on a mill to recut the keyway. Here is a video that shows the work needed (on a much larger shaft):



    If you get a replacement blower, and can find someone to disassemble and reassemble the old blower (I don't have the special tools needed), I would be happy to give the shaft repair a whirl. I have a lathe, mill to recut the keyway, and TIG welder. would do it for free, just as an interesting project, as long as you aren't in a huge hurry. But I think even if I do the shaft repair for free the cost to disassemble and reassemble the blower (setting the timing and clearances, new seals, etc. might be cost prohibitive just to have a spare blower on the shelf.

    If you're in Gilbert then I'm just a little ways away in Phoenix.

    BTW, you should try to figure out the reason for the failure before sacrificing another blower. One thing that can be an issue is excessive overhung load on the shaft caused by positioning the sheave (pulley) too far outboard. The Sutorbilt manual calls for the sheave to be no further away from the blower case than 0.38" (about 3/8"). If the sheave is way out there coupled with excessive belt tension, you can end up with a broken shaft.
    Lee Stockwell and Cleanworks like this.
  15. Spurlington
    Spurlington

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    Vanhoover Blower.jpeg


    This guy has a couple of blowers for sale .. cleaning out his garage Jeff 1-315-589-7486

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