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  1. #51
    Super Star Member
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Might be worth putting in a #5. Wont hurt anything and you can see if it breaks too often for your tastes.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  2. #52
    Platinum Member
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    West Central Idaho
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    Kubota L5740HSTC3; B3000HSDCC

    Default

    Which raises a question that may seem stupid, but I have that tee shirt so here goes:

    Are all 5's equal, or must it be a bolt that is classified both as a "shear bolt" and in a hardness of 5?

  3. #53
    Super Star Member
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Quote Originally Posted by RFB View Post
    Which raises a question that may seem stupid, but I have that tee shirt so here goes:
    Are all 5's equal, or must it be a bolt that is classified both as a "shear bolt" and in a hardness of 5?
    The only difference in a "shear bolt" is that it often has a groove cut into it (such as for a snowblower to match the shaft-auger spacing)
    I use regular grade 5 bolts for shear bolts in our bushhog and tiller.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  4. #54
    Bronze Member
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    Western NC
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    green

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Drawbar length is definitely a dynamic situation. Some implements have very specific lengths for end of PTO shaft to drawbar hole on center. Some implements present unique issues and drawbar better off removed or retracted as much as you can if that works. Sounds like snowblower is one of them.....I wouldn't know.

    ice here today
    *JD 5085M *JD 6110 w 640 loader *JD 6330 *AC F2 Gleaner *Ford 7.3 Powerstroke x 4

  5. #55
    Veteran Member canoetrpr's Avatar
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    Ontario, Canada
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    Kubota M7040 cab/hyd shuttle - current, Kubota L3400 - traded

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    I have also been using normal grade 5 bolts as shear bolts on my equipment. That's until this blower of course which calls for a grade 8 bolt. I still scratch my head about that.
    Current: Kubota M7040 cab, hydraulic shuttle, Kubota M20 loader (made by ALO), LandPride RCR1872 rotary cutter, Horst bale spears & forks, Woods HB72 box blade, Kodiak 7' rake, Walco cultivator, chain harrow, Meteor 74" pull style blower

    Traded: Kubota L3400, LA473 HST (300 hrs), and various attachments

  6. #56
    Epic Contributor Soundguy's Avatar
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    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    yep.. while you might buy the specific length shear bolt from the dealer for a couple $ a pop.. a handfull of hardware store bolts of correct size and grade should be fine.

  7. #57
    Gold Member NH-Rob's Avatar
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    Northern NH
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    Kubota B7510HSD(sold) B3200(new 6/15/09)

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Glad to see that you got it figured out. I did something similar at work once. Except it was with a wagon towed off of the draw bar and when I turned a corner too sharp the 3pt hitch arm hit the shaft and bent it causing a crease making the shaft unmovable. I straitend it the best I could and ordered a new shaft. lesson learned.
    Robbie
    b3200, 60" land pride finish mower, 3pt log spitter, pallet forks, lawn sweeper, bottom plow, Loader mounted snow plow, 3pt quick hitch.

  8. #58
    Gold Member
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    Nov 2005
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    463
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    Colebrook, N.H.
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    Kubota L3830HST

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Glad you got to the cause of the problem, and glad there's nothing wrong with the snowblower. Going forward, this would be a great time to do a test to see how a grade five bolt would work for a shear bolt. It would be interesting to see how long you could go without it snapping, and I don't think you'd be out anything but the time to replace it. It would satisfy the curiosity factor once and for all.
    I think I remember that you said you bought the tractor and the snowblower at the same time. Did the dealer set it up for you, or did you put it on for the first time? The reason I ask is, if the dealer installed it, they should have caught the clearance problem, and also, the first hook-up is the time to make sure the PTO shaft is the right length, as tractors differ in lower arm length, etc.
    I had a similar situation on our tractor after I put a 2" trailer ball on the end of the drawbar. It interfered with the PTO shaft of the bushog. Had to remove the ball, as our tractor doesn't have the swinging drawbar feature.
    I also hope that there was no damage done to the PTO of your tractor. Were they able to give you any assurances about that?
    -Jim

  9. #59
    Super Star Member
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Quote Originally Posted by jimainiac View Post
    I had a similar situation on our tractor after I put a 2" trailer ball on the end of the drawbar. It interfered with the PTO shaft of the bushog. Had to remove the ball, as our tractor doesn't have the swinging drawbar feature.
    We have to flip the drawbar with its mounted ball on our B7500 before connecting the tiller or bushhog as otherwise it gets a little too close for comfort.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  10. #60
    Gold Member
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    Colebrook, N.H.
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    Kubota L3830HST

    Default Re: Cautionary tale. Check your Shear Bolts and get a fire extinguisher for your tra

    Doesn't seem like it would be asking too much for all tractors to come with a swinging drawbar as standard equipment. I don't think it would bother for towing a trailer if it was off to the side, and then you wouldn't have to worry about interfering with PTO shafts.
    -Jim

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