Question about Hobart Welding Tools
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Posted on Jan 02, 2017
SOURCE: Mig welder
Sometimes dirt builds up at the beginning of the liner, at the drive. Eventually the dirt jams in there so much that it gets very hard to push the wire through it. Carefully cut the wire between the spool and the drive and secure it to the spool through a hole, so it doesn't unspool into a bird nest, then disengage the drive roller, the wire should pull out of the tip freely. If you feel resistance when you pull it out, either there is dirt at the beginning of the liner, or the contact tip is causing resistance. Without the wire in the drive, turn on the machine and try it watching the drive. Does the drive work freely now? Does it change speed with the rheostat? If its a problem with dirt, this is what I do, after you get the wire threaded back through the drive, liner and contact tip, and everything is working, take a small clean cotton rag and simply tie it around the migwire between the spool and the drive, in a way that the drive can't **** it in. This will constantly clean any dust/dirt off the wire before it goes through your expensive drive and liner. Whenever you change the spool, change the rag. Hope this helps, and please post your results.
Posted on Feb 08, 2009
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.
Posted on Feb 20, 2009
First, UNPLUG the Welder! There is a small control board (2"x2") that the feed motor plugs into, it has a fuse on it. Here is what you do: Follow the circuit board trace that goes from one side of the fuse though a resistor then to the connector full of wires on the edge of the board, check that resistor for continuity it should read some value besides open. If it is open, this is your problem (as the drive motor ages it draws slightly more current than new, which should blow fuse, but instead blows the resistor). The resistor should be replaced with same resistance value, if problem persists replace again but instead of 1/4amp bump up to a 3/4amp for $1 or replace that drive motor for $150, you choose. Good Luck!
NOTE: As with any circuit board, take precautions to prevent ESD damage to board.
Posted on Apr 22, 2009
why would you need to go to the lowest setting?. anyway look at the feed rollers, make sure they are the correct size for the wire, secondly check the clutch mechanism on the wire mounting centre post this might be too tight, thirdly check the linner this could be crimped.
If the set works ok on number 2 it should be ok on 1, perform the set up again, ensure the rollers are not tightend down on the wire.
lets now if the problem clears,
Posted on Oct 09, 2009
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