Help with mig gun

[bluesboy]

I have Lincoln 180c mig welder. When I removed the nozzle the diffuser came out with it. Now I can't get the two apart without damaging the diffuser. Anyone have an idea to separate the two.

 

[emeraldcoupe]

i'd cut the nozzle off with a dremel

 

[dogdog]

why is there plastic in that MIG tip ? I think some one jam a fluxcore nozzle (platic) into an Mig nozzle(Metal copper/nickle)... is it a special gun (non-standard)?

is it a standard M6 or is it an M8 tip?

thought Tips and nozzle are replaceable items(expendable) ?

but if it is me... I would check if that nozzle tip thread size... most likely M6x1.0 (standard smaller mig) or M8x1.0 (larger 250-500AMP tips) get a Nut of that size and chuck it in a vise and vise grip pull it apart, a little heat from torch for persuasion ?

 

[dogdog]

second look at the picture...

Definitely some one not sure why Crimped a MIG Nozzle onto a FluxCore Nozzle...

Just saw the crimp marks outside... Not sure why that is done ??? Don't think that is a standard setup.... maybe some trick of the trade... Welders have.

 

[jeepinerdeep]

Is that just the 100L Magnum gun? Might just be easier to grab new parts on Amazon.

I used some of those welding city cheapies on a Magnum 200 gun without any issue. I believe they come in a 2 pack normally

 

[zjltd5point2]

It usually works for me to hold the stub of brass in a set of soft jaws in a vice, then unthread the nozzle with a pliers. When you put the brass piece back in the gun find the correct size wrench to tighten it as that will mar it less than pliers.

 

[joe_padavano]

These are stock parts on the Lincoln gun. I had exactly the same problem with mine. After a few minutes of trying to get them apart without damage, I gave up and ordered new ones. They aren't particularly expensive.

 

[MoonRise]

Stock parts, nothing 'wrong' there.

That is NOT an FCAW nozzle jammed into a GMAW nozzle.

The MIG nozzle has an electrical insulator inside where it attaches (screws) to the diffuser. This way the copper nozzle is not electrically 'connected' into the welding circuit.

The crimp marks on the OD of the copper nozzle are where/how it is attached to the insulator ring inside the nozzle.

Your call on just how much you want to 'fuss' with getting the diffuser and the nozzle apart.

You can try some gentle heat (propane torch, not oxy-acetylene!) onto the nozzle and try to rig up some plier tips to grab into the flats on the diffuser. Or some penetrating oil (Kroil or similar), just remove the oil when done.

Granted, they shouldn't have stuck together. But they're only about $10 parts (each).

$20 for two nozzles

https://www.weldingsuppliesfromioc.com/lincoln-nozzle-for-pro-100l-mig-gun-pkg-2-kp3075-1-50f

$25 for five diffusers

https://www.weldingsuppliesfromioc.com/lincoln-gas-diffuser-for-pro-100l-mig-gun-pkg-5-kp3076-1

 

[bluesboy]

Thanks for the replies. Yeah I just being cheap about it. New parts on the way.
Moonrise thanks for explaining insulator ring in nozzle. Didn't know about that thought it was a gasket.

 

[tarbellb]

Did you try a pair of dikes behind the threads?

 

[Jbullfrog]

My Miller suitcase gun is is always hot, and uses the insulator and a sliding nozzle. It's a Tweco #2 or #3, the diffuser screws into the gun and the insulator threads onto the diffuser.

 

[pmat]

I had this same problem with my magnum 100L gun. Couldn’t save the diffuser but was able to save the nozzle by drilling out the diffuser from the back, first with a drill slightly larger than the hole then one a bit larger and finally with a 5/16 drill that fetched up slightly and spun the remains of the diffuser right out with no damage to the nozzle..

 

[speed bump]

When that happened happened on my little tweco gun. I screwed it back into the neck, clamped a vise grip on the neck enough to distort the threads to hold it and then grabbed the nozzle with a set of welpers and tugged and twisted. After the nozzle is off tighten the diffuser with a crescent and consider it lesson learned.