Question about Hobart Handler 140 Mig Welder

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Wire burning betwen rool and feed drive

Have not used my Hobart Handler 140 since last fall and the first time I used it there seems to be a shot as sparks fly off the tension nut and the wire burns off between the spool and the wire feed drive. There has been no mice or anything in it and it was covered so there is no dust etc. It did this twice so I shut it down. Do you have any idea what can cause this???

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  • 153 Answers

When you pull the trigger the entire spool of wire and anything metal that touches it becomes electrically hot. If the tail end of the spool is hanging loose and touches something on or connected to the chassis it will do that, and could have welded the connection so it's solid.

Posted on May 15, 2009

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I have a Hobart 140 Handler, My Problem is the feed wire is feeding too fast. It can not be regulated with the speed control. I believe the problem is with the pc board but not a 100 percent sure.


Hi:

In order to check the wire speed control you will need to open the machine and test the wire speed control mechanism (rehostat, potentiometer) with the use a volt meter. If you see a a variation on it while moving the knob then your problem is the PC board.

Good luck and have a great day.

Aug 22, 2011 | Hobart Handler 140 Mig Welder

1 Answer

I HAVE A HANDLER 140 I PURCHASED NEW RECENTLY, THE WELDER FEEDS WELL BUT THE WELD WIRE ONCE APPLIED IS NOTHING BUT **** AND FALLS OFF THE METAL WHEN STRUCK WITH A HAMMER. i AM USING SOLID WIRE AND THE...


Newer welders as hobart and miller are set up from factory to use innershield wire therefore polarity is set up as inverse. Check inside your machine and check that ground cable is on negative side. Your gas must be mix argon/CO2 or pure CO2 (not recommended).
Other potential problem is wire not being a mild steel one. Check you have gas flow out of your nozzle.
That's all I can think of.

Jan 26, 2011 | Hobart Handler 140 Mig Welder

1 Answer

Have a Hobert handler 135 i can't control the wire feed speed it seems to run wide open.


Sounds like the restate that controls the wire speed is gone. Replace it.

Jan 05, 2011 | Hobart Handler 140 Mig Welder

1 Answer

New Hobart Handler 140, feeds wire properly, but no weld output


Check the two main diodes. These units have a light duty cycle. About 20% if I remember correctly. I have one that I was welding with for a considerable amount of time, and burned up the diodes. You can test them by disconnecting the wires (with unit disconnected) and use a ohm meter. You should get a reading in one direction, but not the other. If no reading, then the diode is blown. You can order new ones from your local welding shop. Also check all conections on the secondary for any signs of overheating and loose connections.

Dec 20, 2010 | Hobart Handler 140 Mig Welder

2 Answers

My Hobart Handler 120 needs a .045 wire drive wheel. Where can one be purchased?


Locate your locale Hobart welding distributer, or contact hobart, the are nice people and will give you all the avice you need.

Dec 26, 2009 | Hobart Handler 140 Mig Welder

1 Answer

Wire won't feed into hose adapter.


You will have to adjust the tension at the feed wheels, also make sure the spool is not too tight, I had the same trouble with the 180 model, just a bit of fine adjustment

Aug 02, 2009 | Hobart Handler 140 Mig Welder

1 Answer

Hobart handler 140 wire feeds properly, will not weld


If it is new i would not play around with the welder Just take it back to where you bought it get them to replace it under warranty

Jun 10, 2009 | Hobart Handler 140 Mig Welder

1 Answer

My hobart 135 will not feed wire. I checked for voltage at the drive motor no voltage. The gas still comes on when trigger is pulled but seems that the problem is in the control board?


does it have a reset button? if so it has gone bad, if not there is a fuse or something inside. they protect that circuit against shorting at the working end of the gun. happens ALL the time.
Hawk

Mar 31, 2009 | Hobart Handler 140 Mig Welder

2 Answers

Hobart handler 140 will not feed wire


A schematic would certainly help, give Hobart a call and ask for a wiring diagram. or manual. Hobart are very helpful and may even give you guidance, you may have to pay the postage, they usually fax these documents so it will not cost you anything.

Feb 13, 2009 | Hobart Handler 140 Mig Welder

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