Millermatic 252 cutting out

[Duffjohn]

Hello I have a millermatic 252 that will cut out once in a while during welding. Its been doing it for quite a while now and I'm over it. Ive got a good ground, clean material, clean tip, plenty of tension on my rollers, which are clean as well. My guess is possibly a smashed/bent liner? I pulled it out a little over a year ago to make sure it wasn't damaged, cleaned it and everything, and I haven't used anything but solid wire since so you wouldnt think it would be that dirty already. Any input or ideas would be great, figured I would ask around before I went ahead and purchased a new liner. Thanks!

[ryanjones2150]

What do you mean that it cuts out? Like it shuts off completely, stops feeding wire, stops burning wire, etc....please be a little more specific with the problem.

[Duffjohn]

yes my bad, i'm guessing that it stops feeding wire for about a second, and then it will continue to feed. Keeps burning so it shouldnt be a bad ground. Some days are worse then others, and some days it won't do it at all.

[aametalmaster]

Check the trigger wires inside the gun. They are about 1/8" too short and sometimes slip off the terminal...Bob

[Duffjohn]

ok i will definitely check that out thanks

[Crepe Myrtle Farmer]

My 252 is my "go to" machine, but it requires a little TLC -- recheck the trigger connections, clean/inspect the liner (be surprised what comes out when you use compressed air), lube the drive mechanism periodically. Not sure if you're running the 8" spools, but checking /rechecking tension is something I do frequently. Also, doing the "wooden block test" every so often is a great way to rule out problems in the wire feed pathway.

[cruizer]

Sounds more like someone has gotten into the internal programming, best do a reset.

[aametalmaster]

Great to see you Cruizer...Bob