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  • transmission gear repair

    I am trying to repair a damage transmission gear tooth. I assume it is mild steel. I like to build up the damaged area with a tig or mig welder then file it down to the shape I want. It is for a mower so it does not need to be very precise. My question is that will the welded metal be hard enough? What can I do to increase the surface hardness after the weld? What filler rod would you recommend? Thank you.

  • #2
    Might be a sintered steel gear. Have any pictures?

    There are hardfacing alloys made for this purpose or for similar applications, but the price tag might discourage you.

    Have you tried ereplacementparts.com for a new one? Or partstree.com? Those are two sources I use for stuff like that. You can even call them up and talk to a human being.

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    • #3
      Sintered or MIM parts don't weld at all. Just went thru this with a JD tractor...Bob
      Bob Wright

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      • #4
        Originally posted by bcjm View Post
        I am trying to repair a damage transmission gear tooth. I assume it is mild steel. I like to build up the damaged area with a tig or mig welder then file it down to the shape I want. It is for a mower so it does not need to be very precise. My question is that will the welded metal be hard enough? What can I do to increase the surface hardness after the weld? What filler rod would you recommend? Thank you.
        I have done several "brush hog" gears with 7018. They are all still running after 20+ years. A couple of them sounded bad at first but wore in and sounded ok after that.

        Griff

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        • #5
          Try it
          Its already junk

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