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Stick Boom swelling on a 300 Komatsu

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  • Stick Boom swelling on a 300 Komatsu

    Here is the stick boom section on an 300 komatsu excavator, water got in by a crack on the left side of the cut out. The water froze and swelled the 1/2 inch top section at least an inch. I had to cut out that piece and reweld in a new piece after I cleaned out about 5 gallon of rust and crud.

  • #2
    What process and what wire or electrode are you running on that repair ?

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    • #3
      Hobart Excel arc wire with a Miller deltaweld 652 at 27.4 volts and 420 wire speed

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