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Hobart 140 Cut-off delay

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  • Hobart 140 Cut-off delay

    On my 140 there has developed a delay in current being cut-off to the wire. When I release the trigger the wire feed stops fine....but the current continues in the wire for a few seconds. The "click" indicating shut-off is delayed by 1 to 5 seconds. I have tapped the gun to see if it is a problem in the trigger but it doesn't help. What could be getting stuck that is causing the delay?

  • #2
    If the wire stops, the trigger is working. There is a contactor in the machine that is a big spring-loaded switch for the welding current, but if the contacts become pitted, they can stick.

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    • #3
      Originally posted by MAC702 View Post
      If the wire stops, the trigger is working. There is a contactor in the machine that is a big spring-loaded switch for the welding current, but if the contacts become pitted, they can stick.
      Ditto...

      Dale
      "Fear The Government That Wants To Take Your Guns" - Thomas Jefferson..

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      • #4
        Thanks for the prompt response. Can these contacts be cleaned or must they be replaced? Is the switch contacts visible or are they inside a unit of some sort?

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        • #5
          Never mind, located it...called the Contactor, will order a replacement. Thanks again for the advice!

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          • #6
            Ok, I'm back....where can I find a Contactor for the 140? So far I've not been about to find one on the wonderful web.

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            • #7
              UMmmmm

              https://www.hobartwelders.com/files/...67B_PT_HOB.pdf

              Part #44....

              https://www.millerserviceparts.com/P...roductId=10026

              https://www.airgas.com/p/MIL217584

              https://weldfabulous.com/miller-2175...1p-24vac-coil/

              https://www.ebay.com/c/1538309138

              Hobart & Miller are sister companies, they share many of the same part numbers...

              Dale
              Last edited by Dale M.; 06-23-2020, 08:31 PM.
              "Fear The Government That Wants To Take Your Guns" - Thomas Jefferson..

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              • #8
                Wait, so it's only a 25A contactor?

                In that case, go to Amazon and buy one for $10. I use these every day in the HVAC repair world.

                https://smile.amazon.com/Carrier-Rep...3021433&sr=8-7

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