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  1. #11
    Veteran Member gordon's Avatar
    Join Date
    Apr 2000
    Posts
    1,786
    Location
    Delaware
    Tractor
    L4310hst-loader-hydraulic top link

    Default Re: Backhoe broke my thumb!(pic)

    Kubmech, Ditto to the have someone else weld it.

    Gordon


  2. #12
    Veteran Member Rowski's Avatar
    Join Date
    May 2000
    Posts
    1,478
    Location
    North Central Vermont, Jay Peak Area
    Tractor
    2004 New Holland TN70DA with 32LC loader, 2000 New Holland 2120 with Curtis cab, 7309 loader

    Default Re: Backhoe broke my thumb!(pic)

    Treeboone

    Could you post a close up (detail) where the weld broke way from both the crowd arm and thumb bracket. I'm really curious as to the reason of failure. I agree with the bad weld (lack of penetration on the thumb bracket) idea. But I have seem cases where the steel is of such low quality that it tears (breaks) away right next to the weld even with proper penetration. Thanx

    Derek

  3. #13

    Join Date
    May 2001
    Posts
    169
    Location
    North Idaho, USA
    Tractor
    2000 Kubota L4610

    Default Re: Backhoe broke my thumb!(pic)

    here is a pic of the weld on the hoe, it stayed pretty much intact. I had to grind off the last 6 inches or so, where the reinforced bracket did not flex.

    Attached Images Attached Images

  4. #14

    Join Date
    May 2001
    Posts
    169
    Location
    North Idaho, USA
    Tractor
    2000 Kubota L4610

    Default Re: Backhoe broke my thumb!(pic)

    Here is a closer pic of the remains of the thumb weld, from what I can see, the welder did OK, but the steel appears to be low grade. As I mentioned before, this whole thumb looks like a shop class project. I got attachment sales phone #, and will get a quote Monday. Fortunately I have a good dealership (so far anyway) and I don't think this will be a big deal.

    Attached Images Attached Images

  5. #15
    Veteran Member Rowski's Avatar
    Join Date
    May 2000
    Posts
    1,478
    Location
    North Central Vermont, Jay Peak Area
    Tractor
    2004 New Holland TN70DA with 32LC loader, 2000 New Holland 2120 with Curtis cab, 7309 loader

    Default Re: Backhoe broke my thumb!(pic)

    Treeboone

    I thought that came to mind after looking at your pictures. On your crowd arm there is a vertical weld (all the way up and down). What I did was to grind a channel into the back side of thumb bracket so that the bracket fits flush onto the crowd arm. It was a lot of grinding but made for a much better (flush) fit. Nice pictures. Showed me what I wanted to see.

    Derek <P ID="edit"><FONT SIZE=-1>Edited by Rowski on 07/01/01 03:14 PM (server time).</FONT></P>

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