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Discussion Forum

The Bug welder

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03-29-2001 13:14:46

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The 1962 Quincy air compressor is done and now need to start on an old gas driven DC welder. It's called "The Bug", has a picture of a bumble bee and is yellow. Made by Harnischfeger Corp, of Milwaukee WI. Also mentions P and H Welding Products and Onan. It is a 2.5 KW, 240 Volt generator at 1500 RPM or a 200 amp 28 volt DC welder with a 50% duty cycle. Looks like a gas engine hooked up to a big old electric motor on a pressure washer cart. It's all original and worked 5 or 6 years ago when it was parked, outside but under cover. Motor spins by hand no problem, havn't tried anything else.

Anyone know anything about this thing, where I can get a manual, all the usual stuff for restoring and using something I know nothing about?!

Oh yeah, all the specs. Model WNP-200 2B5. Specification 2100H 1472.



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04-08-2005 12:21:37

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 Re: The Bug welder in reply to tools, 03-29-2001 13:14:46  
So, did you ever find anything on the Bug? I too have one I got a year or so ago and its been working fine but I'd really like to get a manual, parts list, etc on it. I just pulled it out of storage and noticed that mice have taken up refuge inside the air cleaner. A bit of cleaning is in order, I guess.

Specifically, I am looking for the connector that goes between the carb and the air filter. Never had one. A new one might keep those pesky rodents out of the thing.

Thanks for any help.

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07-06-2003 17:13:14

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 Re: The Bug welder in reply to tools, 03-29-2001 13:14:46  
i have found an old army welder for sale. its a Harnischfeger P&H model wng300b. this thing is a masive 300 amp dc stick welder. just wondering if it wold be worth buying. it needs some work. it runs good but it needs to be rewired. it aparently has been sitting for 14 years and i think the original hours are only at 1937. i could use the help and i would appreciate it.

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william barr

03-29-2001 19:47:32

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 Re: The Bug welder in reply to tools, 03-29-2001 13:14:46  

i bought a bug at an auction .the data plate said it was made by chemetron corp. when i wrote the co. ifound out its really a onan CCK WELDER. based on my parts list data table and the specs you gave you have an onan electric start 6.0CCK-5332E/1 200 amp welder with 50 cycle ac out put. if it is mamual start the (E) in the model no is (P)... the 2.5 kw makes it 50 cycle .if it were 60 cycle it would be 3.5 kw and model no 6.0CCK-332E/1. hope this helps wbb

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gloria morgan

07-02-2003 12:54:31

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 Re: Re: The Bug welder in reply to william barr , 03-29-2001 19:47:32  
own BUG model WNP 200 200 amp DC welder and AC power plant spec no 2100H 1100 6>0 CCK 331E/ 4825l Need to find parts for or kit for fuel pump. need repair kit Please help. Have been every where looking
Thank you Gloria Morgan Machine may be 1970 0r older. Color yellow

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03-29-2001 20:21:41

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 Re: Re: The Bug welder in reply to william barr , 03-29-2001 19:47:32  
Hey William,

That's it exactly, I forgot to mention it was 50 Hz, kinda wierd. Anyway, it's electric start also. So, is this thing worth messing around with much, is there much to go bad on the welding/generating side? Are manuals available for this thing still. I'll go to an ONAN site with the numbers you provided and see what I can stir up.

Thanks for the help,

Chickamauga, GA

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william barr

03-30-2001 05:37:54

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 Re: Re: Re: The Bug welder in reply to tools, 03-29-2001 20:21:41  

hi mike.....i like mine seems to be solid made to last. parts are expensive .i have had to replace several of the resistors that are connected to the back of the plug in panel (they look like metal straps) that broke because of vibration .i think you may have a newer improved version that corrects this problem . parts and manuals are/were availiable .i have parts and service manual and a parts & service directiory.are you the tools i read about on how you got your name on this forum ?.... wbb

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03-30-2001 13:26:56

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 Re: Re: Re: Re: The Bug welder in reply to william barr, 03-30-2001 05:37:54  
Second try, goofed up the first I guess... Yes, that's me, otherwise known in obscure circles as Mike Danford of Chickamauga, GA.

Using the numbers you provided I have a parts and operators manuals on the way (supposedly). The guy I spoke with said he didn't see a service manual available, we'll see what I get and go from there.

All the little straps look ok except the thinnest one. You said they are resistors, are they some kind of special metal or something? I notice the guage of whatever they are goes from thick to thin, and the lengths are the same. Anyway, looked the thing over more carefully today and it looks pretty good. I'll want to check all the wiring out before I try to fire it up, there's a micro switch that looks goofed up, don't know EXACTLY what it does, but will be easy to repair. All the brushes are in good shape, the armature could use cleaning. Missing one of the little brush springs. I imagine I'll have to rebuild the carb, fuel pump and replace plugs maybe wires and points.

Now I'm rambling, thanks for the help, expect an email from me now and then as I work my way along, if you don't mind. For what it's worth, I called a welder repair guy a couple days ago who knew exactly what this thing was and was adamant that it was obsolete, parts/manuals weren't available and to just get a new welder. Funny how everything I own that was welded when this thing was new seems to be just fine...

Take care, thanks again,


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Bud Keister

10-06-2002 18:30:50

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 Re: Re: Re: Re: Re: The Bug welder in reply to tools, 03-30-2001 13:26:56  
I read your comments on the "The Bug". I have one that worked until recently. How did you get ahold of the manuals and did you get your machine running? The engine works fine but it just stopped welding in a heart beat.
Any Ideas would be appreciated.

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C Street

11-06-2002 21:11:59

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 Re: Re: Re: Re: Re: Re: The Bug welder in reply to Bud Keister, 10-06-2002 18:30:50  
We have two "BUG'S" and have come to appreciate their durability and good welding jobs they do. One was bought new in 1970 and the other was bought a fiew years ago. One was painted yellow & the other was burnt orange. I wish parts were more available to repair them when somthing wears out. I have a parts book but don't know really where to find any parts. Engine parts are fairly common spark plugs- ignition points and such, but the micro switch and weld resistors have been hard to find.We use them around the farm on ocassion and they seem to always be ready for work. I want to keep these running for a long time.
Any information you guy's find on the "BUG" please pass it on if you don't mind!
Street Farms

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07-05-2005 15:30:40

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 Re: Re: Re: Re: Re: Re: Re: The Bug welder in reply to C Street, 11-06-2002 21:11:59  
i just picked up one of those bug welders and need to pick up a manual for it dont know where to start can someone help

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