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Problem with Bobcat 225

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  • Problem with Bobcat 225

    I have an older Bobcat 225 with a lot of hours on it. During the middle of a weld the arc quit. The engine is tuned and runs great. Someone mentioned that I should test the reostat (it checked out fine 2 - 12 ohms). The machine will arc but only to a samll degreee, just enough to get the rod end red. Just Wondering is anyone knows of what may be causing this. Thanks for you help.

    Mack

  • #2
    Have you checked the brushes? SSS
    Bobcat 250, MM 210, Syncrowave 180, Spectrum 375
    Cat 242B Skid Steer, Challenger (Cat/Agco) MT275
    1 Thessalonians 4:11-12

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    • #3
      I have checked the brushes. The AC power otlets are testing at the correct volts.

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      • #4
        I'd take a look at the diodes next.

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        • #5
          Big problem

          Grab a circuit diagram, put it under load and start tracing backwards until you find it.

          BOL
          Triggerman

          Ammonia refrigeration tech
          Trailblazer 302 (yes, it's new)
          Millermatic 180 w/Autoset
          CST-250
          HF-15 High frequency
          XR15 w/Push-Pull Gun
          Victor O/A, DeWalt, North mask


          "A professional knows what to do. A craftsman knows why."

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          • #6
            My low output was due to a dead capacitor. 70 bucks later and I was up and burning.
            Don


            '06 Trailblazer 302
            '06 12RC feeder
            Super S-32P feeder

            HH210 & DP3035 spool gun
            Esab Multimaster 260
            Esab Heliarc 252 AC/DC

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            • #7
              Good for you!

              Congrats on finding/repairing your prob.
              Triggerman

              Ammonia refrigeration tech
              Trailblazer 302 (yes, it's new)
              Millermatic 180 w/Autoset
              CST-250
              HF-15 High frequency
              XR15 w/Push-Pull Gun
              Victor O/A, DeWalt, North mask


              "A professional knows what to do. A craftsman knows why."

              Comment

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