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Miller 250 Dial

F

fastfarmall

Well-known Member
As long we are on Miller Welders,my little drive wheels slip. like they are wore out, it will stop feeding the wire thru,as i am welding,so do they wear out, I have it clamped down tight, I run .035 wire in it, or what is my problem? The main cable has to be pretty straight, no kinks in it, that helps! I grew up on the stick welder,my son bought this for me, as a present!
 
I would start with a new liner in the cable, then try your wheels. Unless your cable is in poor shape externally then replace whole cable.
 
Well it looks very nice, yet, but i know laying it straight really helps! I put on a new tip, that seemed to help!
 
Some of the wheels are sized for two different size wires, so might try a smaller size to drive wire but betting on the liner.
 
I have a similar situation with my MM250. Drive wheels cranked tight, the cable straight makes a big difference, but my biggest problem is not welding frequently enough and my shop is damp.
The wire begins to rust on the spool and drags on everything. When its really bad I just pull a pile of wire off the spool and eventuality it starts to weld well again. The other thing I do is take a piece of green Brillo scrubbing stuff and fold it over the wire held in place with a paper clip. This helps but really if there is rust, it is the main problem and the Brillo wont take that off.
In the fall / winter damp season I sometimes will leave a low wattage night light in the spool compartment... just enough warmth to keep the moisture from condensing in there.
Overall its been a pretty trouble free welder, but I am thinking about replacing the entire cable and gun soon. Its been abused pretty god over the years.
Grant.
 
I welded for a living in my younger day in a manufacturing. Over time the liners get dirty and a groove gets worn into them. Then the only way you can get it to feed is keeping the liner straight. I defiantly would change the liner and new tip. You may find that you can back off of the roller tension then. You are trying to force the wire through the liner that has huge resistance. Liners go bad over time and can make the welder not weld very good. You may be surprised when you get the new liner in how much better it welds and may even have to turn wire speed down.
 
Ok,Thanks guy's, it's about 18 years old, now, i suppose,but the cable has never been stepped on, and looks very nice, but i will get a get liner for it, thanks for your help!!!
 
I've been told that to much wheel tension makes little nicks in the wire or can squash it slightly causing scratches in the liner also.
 
Take a small piece of cloth shop towel and soak it in WD-40--then take a spring clothespin and clamp the cloth after folding a few times over the wire right in front of the rollers--it cleans and lubes the wire and makes the wire easier to push through the line--Works--Redo when you change roll of wire.---Tee
 
Had the same problem with my first wire welder.

Except it wasn't a Miller, but an off brand and I couldn't find a liner.

I took the liner out, flushed it with carb cleaner, blew it out, repeated several times. Got it working better.

But what I discovered the problem was somewhat self inflicted.
I was having so many problems with it, often the cover would get left open.

One time I noticed an accumulation of grinding dust settled inside the enclosure, and on top of the wire roll! Not good!

I made sure the cover always stayed shut from then on.

Then I was at the welding supply and found these.

That was 30+ years ago and still using the same one!
Wire Wiper
 
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