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I have a mig sp-125 and the and the wire feed surges what can i do. is their a place to lube the gears or the drive

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Suspect that the problem is weak contact with the wire drive mechanism rather than bearings or gears needing lubrication. You may need to disassemble the mechanism looking for weak or broken springs and dirty pivot or sliding surfaces. The wire path in the hand-piece or feed cable may be badly worn. Hope this helps!

Posted on Feb 05, 2010

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Verify the polarity is correct for Flux or Mig configuration (should be on label under lid) - and ensure there are no loose connections on that polarity wire.

Loosen the tensioner + make sure the wire feed motor turns freely by hand.
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If it does spin freely, then inspect the contacts for the voltage selector. Make sure to unplug the power cord and keep clear of the big capacitor. My SP-135T contacts corroded while in storage.

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Your drive tension is too light. There are rollers that the wire feeds through and they need to be tightened. They should push the wire through the gun but slip if you put the tip against a solid object and pull the trigger. If they do not slip, they will jam your gun. Give the tensioner another turn.

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