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  1. #1
    hr3
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    Default Woods backhoe sub frame problems

    Ok I have a woods backhoe and the bolts that attach the subframe to the rear axel keep coming loose.. Last year I took them all out and cleaned the threads real good and lock tited them back in,,About 3 months later one was loose,, So I tightened it and welded all the heads to the subframe so they wouldn't come loose again,,

    Well one just broke off again today,, ANY good ideas how I can fix this,???

  2. #2
    Super Star Member RoyJackson's Avatar
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    Default Re: Woods backhoe sub frame problems

    If you just tacked the bolt heads, grind down the tack and use an easy-out.
    I suggest you use lockwashers next time, and make checking the bolt torque part of your routine.
    Roy Jackson

    "Any government that does not trust its citizens with firearms is either a tyranny, or planning to become one."
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  3. #3
    Veteran Member jimmysisson's Avatar
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    Default Re: Woods backhoe sub frame problems

    Quote Originally Posted by RoyJackson View Post
    If you just tacked the bolt heads, grind down the tack and use an easy-out.
    I suggest you use lockwashers next time, and make checking the bolt torque part of your routine.
    +1 on checking torque. Would a nylock type nut stay tight? I've heard lock washers don't work so well.
    Jim
    "Anything worth doing is worth doing slowly" Mae West

  4. #4
    Super Star Member RoyJackson's Avatar
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    Default Re: Woods backhoe sub frame problems

    Quote Originally Posted by jimmysisson View Post
    +1 on checking torque. Would a nylock type nut stay tight? I've heard lock washers don't work so well.
    Jim
    If they are through bolts. I thought they were in blind holes though...maybe the OP will confirm.
    If he uses locknuts, I think he'll need longer bolts. You want at least one or two full threads through a lock nut.
    Safest way might be to use longer bolts drilled for cotter keys and use castellated nuts.
    Roy Jackson

    "Any government that does not trust its citizens with firearms is either a tyranny, or planning to become one."
    -Joseph P. Martino

  5. #5
    hr3
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    Default Re: Woods backhoe sub frame problems

    Not through bolts they bolt into the alum axel housing.. I've used lock washers but to no avail.. As for torqueing I've had them come loose within a few hours with heavy use with the backhoe..

    One that broke last year wouldn't come out so I put in a helicoil.. There is no shoulder on the bolts I'll try to find some that are but I'm still at a loss..

  6. #6
    Super Star Member RoyJackson's Avatar
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    Default Re: Woods backhoe sub frame problems

    Quote Originally Posted by hr3 View Post
    Not through bolts they bolt into the alum axel housing.. I've used lock washers but to no avail.. As for torqueing I've had them come loose within a few hours with heavy use with the backhoe..

    One that broke last year wouldn't come out so I put in a helicoil.. There is no shoulder on the bolts I'll try to find some that are but I'm still at a loss..
    Since you wrote you have an aluminum axle housing, it's possible those threads are working. You might consider putting some type of solid insert (rather then a helicoil) in there. Before you do this, I suggest you contact the Woods engineering department and see what they suggest.
    Roy Jackson

    "Any government that does not trust its citizens with firearms is either a tyranny, or planning to become one."
    -Joseph P. Martino

  7. #7
    Elite Member Zebrafive's Avatar
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    Default Re: Woods backhoe sub frame problems

    Is it possible to install studs? You might have position the sub frame then install the studs thru it into your axle housing. I would be worried about stripping the threads of the axle housing using bolts. Studs will not be twisting in the axle housing threads. I think you could get higher torque on studs safely vs bolts. There are also various ways to lock the nuts on the studs, such as using castle nuts and cotter pins.
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  8. #8
    Elite Member Baby Grand's Avatar
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    Default Re: Woods backhoe sub frame problems

    Are you using a torque wrench to install the bolts?
    Broken bolts is usually a sign of either overtorque, which results in excessive bolt preload or flange separation due to undertorque.
    That's the problem with trouble.
    It always starts out as such fun."
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  9. #9
    hr3
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    Default Re: Woods backhoe sub frame problems

    Quote Originally Posted by Zebrafive View Post
    Is it possible to install studs? You might have position the sub frame then install the studs thru it into your axle housing. I would be worried about stripping the threads of the axle housing using bolts. Studs will not be twisting in the axle housing threads. I think you could get higher torque on studs safely vs bolts. There are also various ways to lock the nuts on the studs, such as using castle nuts and cotter pins.
    I like the stud idea,, should I locktite the crap out of them if I put some in???

  10. #10
    hr3
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    Default Re: Woods backhoe sub frame problems

    Quote Originally Posted by Baby Grand View Post
    Are you using a torque wrench to install the bolts?
    Broken bolts is usually a sign of either overtorque, which results in excessive bolt preload or flange separation due to undertorque.
    Good idea I just looked in the book on the hoe and it dosn't even show the subframe.. ??

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