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Millermatic 30A Wire Feeder - Ain't No 7A749 Refurb

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发表于 2022-6-24 15:51:31 | 显示全部楼层 |阅读模式
I never know if these threads should go here or in the appropriate manufacturers section but seeing as it's not an operational problem, Welding Projects & Pictures it is 'cause it was yesterday's project and I got pictures.I picked up a Millermatic 30A wire feeder a couple weeks ago to add to the Airco MIGet unit I have http://weldingweb.com/vbb/showthread.php?t=30514 that's been sitting idle since I checked it out to make sure everything works a-OK.  Time for it to earn its keep.The MM30A just happen to come with (4) three phase, 250amp Airco power supplies (rebadged Miller CP250s), a Chemetron WC-50S wire feeder, Linde MIG 31 wire feeder and (2) Airco AHF-R2 suitcase feeders as well as (2) flow meters/gas hoses, a 300amp Bernard gun, a 400amp ProFax gun and a bunch of work leads/clamps.  All working but we'll leave all that for another time.:roleyes:Anyway, the MM30A has seen its share of action and was covered with years of caked on dirt and grime so it was time for a 'freshing up'.

All broken down and ready to get started.

The drive head main shaft exhibited an unacceptable amount of slop and although I figured it was a worn bushing, it turned out to be more the fault of the shaft as can be seen here.

One end built up using the Sycrowave 180SD and 3/32" ER70S-2 filler, 3/32" red tungsten, #4 cup, argon @ 12cfh, DCEN with amps to max and peddled as required.  Looked a couple times and meter read 39 and 52 amps after running a bead.

Main shaft following some time in the Enco lathe.  Obviously my machining skills aren't any better than my welding and although it ain't pretty, it's back to spec diameter (.625") where it needs to be.  If I had the ability to cut keyways I would have opted for a complete new shaft as I have the required material on hand.  Although I did not change the bushing, the shaft 'repair' removed over half the slop to where it is now acceptable for me.

Stand by for some shots of the reassembly.
MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Repaired shaft and driven/drive gears reassembled in drive housing.

Drive housing reassembled minus drive rolls.  Unit came with a set of .035 and .045 rolls and had been converted to use solid rolls that are the same as the MM200 so they can share as needed.


Shot from the back showing the new conductor sheath for the gas valve that replace the brittle and cracked original.

Front view showing the faceplate with lettering that wipes right off if you get too carried away attempting to clean.  Not sure what I'll do with that yet but I may take it to a local lettering guy as Steve (7A749) has suggested and does.

Side view showing the 'after' with out the control cables that will be replaced with longer pieces as I plan on parking the Airco power supply and build a cart for the feeder and gas cylinder.  Wrapper still needs new paint and badges but as I said - it ain't no 7A749 refurb.


Thanks for looking.
MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:i have a 30a and its a spool gun
Reply:

Originally Posted by ed mac

i have a 30a and its a spool gun
Reply:I've got a 7A749 Refurb, and at first I was thinking "Why are you dissin' my boy?"  But then I opened the post and checked out your workhorse...We'll you do have double rolls, so you can put a hundred foot gun on it...MILLWRIGHT'S SONMiller XMT 304 CC/CVMiller S52 Stainless Steel FeederMiller Process Selector ControlBernard Q-GunBernard Short StubTrade: Furniture Maker, so I'm a fabricating fool.
Reply:Well now that you mention it I can see where the title can be misleading

and thanks for checking out the thread before dropping the hammer on me.

I have the utmost respect for Steve and as you can attest is second to none with the quality of work he does.

MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:That double-double drive system should be able to push a snake down a sewer pipe! Is it pretty tight tolerances to prevent birds nesting?"The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:I can tell you for certain it has some pullin' power.  I've only run a small sample piece (3-4') of wire thru it when checking it out and it doesn't take much tension on both drives to turn it into a stump puller.As for bird nesting, I would imagine it runs the same chance as a single drive roll system that's adjusted too tight.  The intermediate wire guide runs about as tight to the first rolls as the gun adapter does to the second ones so it should just be a matter of proper adjustment to prevent any bird nesting.  The manual doesn't elaborate but my guess is the tension adjustment on the first set would be slightly less than that of the second if anything but I wouldn't think equal tension should cause any problems either.  Don't know - never used a dual drive before.

MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Duane,If you have the exact specs for the keyways in the shaft, I'd be happy to take some .625 precision drill rod and make a brand new shaft for you.  I'd have no problem machining those, and I'd be happy to do it for just the cost of materials and shipping.--Wintermute"No man's knowledge here can go beyond his experience." - John Lockewww.improvised-engineering.comManufacturer Agnostic:Blood----------Sweat---------Tears----|------------------|----------------|----Lincoln Red, Miller Blue, Esab Yellow
Reply:I certainly appreciate the offer wintermute but even though it's uglier than sin, it's back to .625" where it rides on both ends of the 2" long bushing taking out most of the play.  A new bushing would take care of the rest but it's working smoothly so I'll run with it for now.  It'll probably still outlast me.Thanks again for the generous offer.

MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:As always Duane, first class job. What you gonna use he for?"Si Vis Pacem Para Bellum"Lincoln Idealarc 250 AC/DCMillermatic 251   Syncrowave 300   30A spoolgunLincoln MP210Hypertherm 45(2) LN 25(2) Lincoln Weldanpower 225 CV(4) SA200   1 short hood    SA250    SAM 400
Reply:

Originally Posted by kolot

As always Duane, first class job. What you gonna use he for?
Reply:Looks nicer now with the base cleaned and painted.  

A little welding to rebuild the shaft, so it counts as a welding project too.  

And I'm kind of surprised those old Dymo labels are still on there!  They always seemed to peel or fall off, as the adhesive seemed 'iffy' to me.  Either that or it stuck on forever!  

But that sad blue paint makes it all look not as good as it could.  I'd say for a quick-spiff to just remove the Dymo labels, mask the Miller emblems, and clean and paint the blue.  Done.  Replace Miller labels if you want later.All in all, nice project (as usual).  

  The best laid schemes ... Gang oft agley ...
Reply:

Originally Posted by 7A749

If you run across a matching drive gear, let me know what you find.
Reply:

Originally Posted by duaneb55

I was looking at those gears and main drive gear numbers looked aweful familiar.  Not Martin Gear numbers but I think they may be from that other outfit (name escapes me at the moment).
Reply:hello im troy i just picked up a millermatic 30a wire feeder i have some questions for you
Reply:im new to site so if u got time private message me please thank you
Reply:Let me no what u think thanks



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Reply:Let me no what i think please thanks



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Reply:Nice job there Duane. I some how missed this the 1st time around. I'll need to remember this thread since I have 2 of those feeders that I trash picked a few years ago still sitting in the garage as an "around to" project. Since I don't yet have a separate CV power source, they have been way down the list. Hopefully between the two I'll have most of what I need to get at least one running eventually..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Troy,That lead coming from the gun adapter goes to the (+) output of the welding power source.  Often there's a short lead that goes to the power stud (red arrows) and then the power supply lead connects to the stud.  Either way works.  Obviously the gun end inserts at the yellow arrow and this type adapter is typically for Tweco style guns.

The 3-prong plug you're looking for is a NEMA L7-15 and you can get one here http://www.stayonline.com/detail.aspx?id=6804 if you can't find one locally.The 2-prong plug for welding power source contactor control output is a NEMA L2-20P and you can get one here  http://www.stayonline.com/detail.aspx?id=4758 if you can find one locally as well.As for your AC225 working as a power source, that would be no as MIG is a DC process and the MM30A requires a CV (Constant Voltage) power source whereas your AC225 is a CC (Constant Current) machine used for stick and TIG processes.
Last edited by duaneb55; 11-05-2012 at 08:39 AM.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Thanks for jumping in Steve.  I meant to suggest Tony check with you on plugs and other such stuff but got in a hurry.

MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

Save Second Base!

Reply:Holy wire feeders Batman!!!

MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Hey thanks Duane i found the 3 prong locking plug at the specialty electric store and i got it for under 10 bucks so ya now im ready to plug her in probley this weekend or maybe tmrw. So the 3 prong locking plug i can just plug it to your regular 110 wall outlet?
Reply:So any DC power source will work to run my MM 30a wire feeder... Whats a welder i can use to run my 30a wire feeder. Will this welder run my 30A wire feeder??? Cuz i can pick this welder up for 150 buck its an old thunderbolt.

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Originally Posted by 7A749

Gonna be doing some feeder builds this winter, that's for sure.


Reply:

Originally Posted by quicksilva22

Hey thanks Duane i found the 3 prong locking plug at the specialty electric store and i got it for under 10 bucks so ya now im ready to plug her in probley this weekend or maybe tmrw. So the 3 prong locking plug i can just plug it to your regular 110 wall outlet?
Reply:So when I'm looking for a welder will it say cv on it?
Reply:Yes.  CV, Constant Voltage or Constant Potential (usually an older unit).You can also use a combination unit that would be labled as CV/CC or similar.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:alright cool thanks alot for your help.
Reply:Duane and 7A749, figured I'd resurrect this thread briefly as I just picked up a 30A wire feeder in good shape for $100 to (hopefully) setup on my Trailblazer.  I haven't gotten it into the shop yet, but I figured I'd start asking if you have an idea of what it's going to take to get it running on the TB and what if anything I should look for first prior to hooking power up to it.Thanks,--Wintermute"No man's knowledge here can go beyond his experience." - John Lockewww.improvised-engineering.comManufacturer Agnostic:Blood----------Sweat---------Tears----|------------------|----------------|----Lincoln Red, Miller Blue, Esab Yellow
Reply:Hello wintermute, I have a 30A also, however I am marrying it up to a POWCON 400SMT and thus will be using a different wiring scenario. That being said, I believe that the only issue that you may have is one of not having enough 110V power through the amphenol connection. I originally used this feeder on a TA 400GSM and ran into that issue. The contactor hook-up was a piece of cake, but the 110v power through the amphenol wasn't sufficient to provide the feeder with operating current. There is an adapter that Miller sells to adapt the contactor plug and power plug on the back of the 30A to a 14 pin amphenol plug that is used by the newer Miller power sources and your Trailblazer as well. I left the power plug disconnected on the adapter pigtail and used an extension cord with standard household current supplied, this addressed the amperage draw of the feeder very well. In your case, you may need to plug an extension cord into the auxiliary power of the Trailblazer to address the power requirements of the 30A feeder. Just some food for thought. Good luck and best regards, Allanaevald


Reply:

Originally Posted by wintermute

Duane and 7A749, figured I'd resurrect this thread briefly as I just picked up a 30A wire feeder in good shape for $100 to (hopefully) setup on my Trailblazer.  I haven't gotten it into the shop yet, but I figured I'd start asking if you have an idea of what it's going to take to get it running on the TB and what if anything I should look for first prior to hooking power up to it.Thanks,--Wintermute
Reply:Hey Steve, I had to go with a "separate" 110v supply when I wired up my 30A to the Thermal Arc and the Powcon, the 5A 110v wasn't enough from these 2 power sources. I can't remember now, do the Miller units provide more through the 14 pin amphenol? Regards, Allanaevald


Reply:

Originally Posted by aevald

Hey Steve, I had to go with a "separate" 110v supply when I wired up my 30A to the Thermal Arc and the Powcon, the 5A 110v wasn't enough from these 2 power sources. I can't remember now, do the Miller units provide more through the 14 pin amphenol? Regards, Allan
Reply:Thanks for the responses folks.  7A749, here're the pics...hopefully you can tell me what I'll need to get into this other than just removing rust and oiling/greasing some components










--Wintermute
"No man's knowledge here can go beyond his experience." - John Lockewww.improvised-engineering.comManufacturer Agnostic:Blood----------Sweat---------Tears----|------------------|----------------|----Lincoln Red, Miller Blue, Esab Yellow
Reply:Damn, that's OLD!!You'll need to find where your input power connects & I'm betting its that two space terminal. I've never seen one like this, where there's no plug for 115 VAC input. It must have had a simple plastic or Romex style connector that could have had the female twistlock on the end of the cord that connected to the power source that ran it. Usually, there are two plugs in the back of these, but like I said, it's Pre '70's for sure, maybe even a lot older. The SN can be traced, dunno if the Miller site is gonna go back that far or not. I will have to see a schematic to know for sure where the 115 connects. I would just install a Romex connector where that hole in the case is & get a two prong twistlock for the contactor control plug in back. Run both cords together into one 14 pin connector. For the contactor, you'll only need one wire, the newer machines pick the other half of it up in the welder. The double twistlock to 14 pin adapter only uses one wire for the contactor, so it's the same thing.You also got really lucky in that someone upgraded the drives to the two piece carrier/drive roll style instead of the obsolete 12 pitch large solid larger drive roll wheel common on really old machines like this. They're really hard to find & most ppl who keep these change them over to what you already have.  As far as a gun goes, most ppl outfit these with a Tweco Universal mount gun & an adapter with a gas hose barb on it. I have several good ones here, I may even have the correct size end to fit into the drive. If not, a standard size can be easily machined with a lathe to the correct diameter. A small set screw holds it in place. Mount a piece of 3/16" vinyl tubing to the barb on the end of the tube coming from the solenoid to the barb fitting on the Tweco adapter you'll get & put a fitting on the solenoid so you can mount a gas hose to it easily. Any gun with a Tweco Universal end will plug right into the Tweco adapter.Let me know if you need anything for it. I've got boxes of that stuff in my shed. I might even have a gun for you too. The price will be right

Expert Garage Hack....https://www.facebook.com/steven.webber.948
Reply:I have an old wire feeder too got it for free  here are some pics of it. I am looking for a cv machine to run it.





Lincoln 225 ac (my first machine)farmhand 115vac 70amp mig/fc toymiller aead 200le (my main machine)
Reply:here are a couple more pics.



Lincoln 225 ac (my first machine)farmhand 115vac 70amp mig/fc toymiller aead 200le (my main machine)
Reply:That feeder will operate on standard 115 VAC current. Contactor will pick up on tow wires & is most likely an energized circuit like Miller machines are. Yu can even make a cord to plug it into the wall & run it off any CV power source.Expert Garage Hack....https://www.facebook.com/steven.webber.948
Reply:Nice job Daune.  I have an old 10e feeder I bought in the 70s with my SCP200 that I still use.   Still works great. Hope I just didn't Jinx myself..................Saw a system like I still use on another thread and the poster was talking about they made good boat anchors....Hard to believe 40 years got by so quick.  Thanks for the post.  As always  a good job by you.
Reply:7A749, I'd definitely be interested in the gun for it.  I'm probably going to start pulling it apart tomorrow to get all the components cleaned up and check tolerances on shafts and such and see if there's any mechanical components that need to be replaced or repaired.  The wiring will be the more complex part for me...I need to figure out what is what and what goes where.  Then I'll take a shot at wiring up the miller 14 pin connector for everything.  One question I had was where is the gun powered from and where does the ground go (basically, how do I get power from the TB to the gun and ground from the TB to the work?  Also, are drive rollers still available for this unit (can I get different sized ones easily or are they rare items)?Thanks again for all your help.  I'll IM you to purchase the gun if you have one and let you know if there are any other parts that I need.--Wintermute"No man's knowledge here can go beyond his experience." - John Lockewww.improvised-engineering.comManufacturer Agnostic:Blood----------Sweat---------Tears----|------------------|----------------|----Lincoln Red, Miller Blue, Esab Yellow
Reply:I'm interested to know the age of that unit if you ever find out, Wintermute.MillerMatic 252Miller Xtreme 625Miller Digital Elite
Reply:

Originally Posted by Daeyel

I'm interested to know the age of that unit if you ever find out, Wintermute.
Reply:Started a new thread for the restoration of this puppy in the Machines, Tools & Cutting Methods section so that I don't completely hijack Duanes thread any more than I already have.  Here's a link to the new thread: http://weldingweb.com/vbb/showthread.php...11#post4006611I already have a few questions for 7A749 there

--Wintermute
"No man's knowledge here can go beyond his experience." - John Lockewww.improvised-engineering.comManufacturer Agnostic:Blood----------Sweat---------Tears----|------------------|----------------|----Lincoln Red, Miller Blue, Esab Yellow
Reply:Hi , I'm a new member as well, I have the 30a too.

Troy I'm looking for the inlet and outlets guides as well as the ground piece the inlet guide is screwed into ,(bottom arrow in your picture) Do you have a part number for those? Thank you

Reply:I'm trying to hook a torch to it. We used the welder for aluminum. The feeder was not used much. We upgraded to a newer machine and I need to sell this one as soon as I get it going with a mig gun. Thank you
Reply:d


Reply:Welcome to the forum kurtiscat.

Go here http://www.millerwelds.com/service/l...&submit=Search and you can download the correct manual for your unit based on its SN.  In the back of the manual you will find the parts break-down that you can identify the PNs you're looking for.Then you can go here http://www.miller4less.com/ and get availability and prices for each item needed.
MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:These are the parts you need.PM me if you're interested in them. Price will be right.I probably have a gun for it too.

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