Generators and Electric Motors
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Shop Equipment Tools and Techniques > Welding Shop
Forgot Password? Join Us!

Notices

Welding Shop Welder generators, equipment, weld practice, techniques, troubles and solutions. See our TERMS of SERVICE prior to reading!

Welding Shop

Lincoln SA200 That does not weld.


this thread has 11 replies and has been viewed 10825 times

Reply
 
Thread Tools Display Modes
  #1  
Old 11-12-2012, 08:09:38 PM
dadam2308 dadam2308 is offline
Registered
 
Join Date: Oct 2012
Location: Canaan, Connecticut
Posts: 38
Thanks: 7
Thanked 5 Times in 3 Posts
Default Lincoln SA200 That does not weld.

A newbie needs some advice.
I purchased a Lincoln SA200 for $250.00. To date I have rebuilt the mag and carb, new plugs and battery. I figure at this point I am in it for about $450.00 and the engine runs great.
I started looking at the welder part of it and not so good. I flashed the exiter and now have about 116-118 volts dc to the outlet. Still does not weld. I was advised to take the two wires off the fine amperage rheostat and jump them, still dead. At this point I am left to think its the shunt coils. I believe these go for around $500.00.
What is the best way to test these coils? There are 2 wires that go along the bottom of the large generator and through the bottom of the exiter. One is black that goes up to the + brush holder on the rh side. The other is red and is joined with a small bolt to a solid copper wire. Please be aware that my strong point is mechanical and not electrical.
If there is a way to ohm these and somebody could explain it to an electrical idiot like myself, that would be greatly appreciated.
Lastly, my other thought is to give it up. What would be a reasonable price for an SA200 that runs great but does not weld?

Code 7789
Model SA200-F163
SN A828654

Thanks.
Reply With Quote
Sponsored Links
  #2  
Old 11-12-2012, 09:37:16 PM
Pat Barrett Pat Barrett is offline
Subscriber
 
Join Date: Nov 2004
Location: Brookhaven, Mississippi, USA
Posts: 3,138
Thanks: 958
Thanked 2,058 Times in 1,191 Posts
Default Re: Lincoln SA200 That does not weld.

I'm in the same boat as you are, electrically. I've heard of the brush holders getting oxidized and not permitting the brushes to engage the armature, thus giving the condition you describe. Not saying thats your problem but be sure the brush holders are clean and all the brushes floating as should.
Reply With Quote
  #3  
Old 11-13-2012, 10:42:24 AM
Jim Sherman's Avatar
Jim Sherman Jim Sherman is offline
Subscriber
 
Join Date: Nov 2004
Location: Vashon, Washington
Posts: 1,222
Thanks: 756
Thanked 1,298 Times in 306 Posts
Default Re: Lincoln SA200 That does not weld.

Just looked up your machine, it's a 1977 hex barrel. The hex barrel machines are known to have the shunts go out. The reason is Lincoln switched to aluminum wire with a copper coating, they corrode at the terminals and viola you're done. Hybriweld has a good deal on shunt coils. I will see if I can dig up the test procedure for "ohming" them. I did mine but I could tell you how to do it without re-reading the procegure. Don't give up! Even if you have to dump another $500 into it, it's probably still worth it.

---------- Post added at 06:42 AM ---------- Previous post was at 06:37 AM ----------

http://billswelderrepair.com/SA200schematics.html

Look at the above link. You should be able to pull the ohming process off the first page.

Try these guys for your Shunt coils:

http://hybriweld.com/products/shunt-...2a9291eb46db98

I have not purchased their coils but I have heard nothing but good things about them.

If you test the shunts and everything ohms out correctly, I'd look at the idler, it's possible the solenoid on the idler is not actuating.
__________________
Jim Sherman

My website

Last edited by Jim Sherman; 11-13-2012 at 10:54:00 AM.
Reply With Quote
The Following User Says Thank You to Jim Sherman For This Post:
  #4  
Old 11-13-2012, 10:24:02 PM
dadam2308 dadam2308 is offline
Registered
 
Join Date: Oct 2012
Location: Canaan, Connecticut
Posts: 38
Thanks: 7
Thanked 5 Times in 3 Posts
Default Re: Lincoln SA200 That does not weld.

Pat
When you say brush holders, you are referring to the larger ones that are about 1 inch wide by 3 inches long, on the larger of the two armature. I did notice that the copper armature was black from corrosion, Do you think that would prevent it from operating?

---------- Post added at 09:24 PM ---------- Previous post was at 09:20 PM ----------

Thanks for the info Jim, I will try to ohm the shunt coils. I hope thats not the problem as it looks like a major job to replace them.
Reply With Quote
  #5  
Old 11-13-2012, 11:45:53 PM
Jim Sherman's Avatar
Jim Sherman Jim Sherman is offline
Subscriber
 
Join Date: Nov 2004
Location: Vashon, Washington
Posts: 1,222
Thanks: 756
Thanked 1,298 Times in 306 Posts
Default Re: Lincoln SA200 That does not weld.

It's not all that bad, but you have to get them pressed in and out. The best thing to do is find a local welder repair place, bring your barrel and new coils to them and have them press out the old and in the new.
__________________
Jim Sherman

My website
Reply With Quote
  #6  
Old 11-18-2012, 11:16:27 PM
dadam2308 dadam2308 is offline
Registered
 
Join Date: Oct 2012
Location: Canaan, Connecticut
Posts: 38
Thanks: 7
Thanked 5 Times in 3 Posts
Default Re: Lincoln SA200 That does not weld.

Would corrosion such as this prevent the machine from welding. I polished up the armature but it was too late to start it up. I also found 1 set of brushes that were not cooperating, freed them up. Hopefully that will make the difference. Find out tomorrow.

Cant figure out how to post the picture.
Reply With Quote
  #7  
Old 11-19-2012, 12:04:12 AM
Jim Sherman's Avatar
Jim Sherman Jim Sherman is offline
Subscriber
 
Join Date: Nov 2004
Location: Vashon, Washington
Posts: 1,222
Thanks: 756
Thanked 1,298 Times in 306 Posts
Default Re: Lincoln SA200 That does not weld.

Quote:
Originally Posted by dadam2308 View Post
Would corrosion such as this prevent the machine from welding.
Yes it would.
__________________
Jim Sherman

My website
Reply With Quote
  #8  
Old 12-09-2012, 09:21:04 PM
dkamp dkamp is offline
eMail NOT Working
 
Join Date: Oct 2007
Location: LeClaire, Iowa, USA
Posts: 1,800
Thanks: 35
Thanked 999 Times in 637 Posts
Default Re: Lincoln SA200 That does not weld.

So what's the result? Any success??
Reply With Quote
  #9  
Old 04-11-2013, 11:22:54 PM
Oilpulled Oilpulled is offline
Registered
 
Join Date: Jun 2008
Location: Rockford, Illinois, USA
Posts: 4,112
Thanks: 12,168
Thanked 5,783 Times in 2,223 Posts
Default Re: Lincoln SA200 That does not weld.

Call Lincoln. They are very helpful. Yes trace circuit and check continuity of everything. Compare with the schematic. A proper operating commutator gets shiny black and doesn't need polishing unless there is corrosion.
Reply With Quote
  #10  
Old 04-12-2013, 04:38:59 PM
Black Eagle Black Eagle is offline
Registered
 
Join Date: Dec 2012
Location: Annapolis, Maryland
Posts: 80
Thanks: 23
Thanked 39 Times in 33 Posts
Default Re: Lincoln SA200 That does not weld.

Any progress?
Reply With Quote
  #11  
Old 04-12-2013, 05:11:01 PM
Kpack
Guest
 
Posts: n/a
Default Re: Lincoln SA200 That does not weld.

Sometimes we hear back and sometimes we don't we just keep wondering
Reply With Quote
  #12  
Old 04-14-2013, 12:44:33 PM
Dempster Dempster is offline
Registered
 
Join Date: Jan 2007
Location: Texas USA
Posts: 1,239
Thanks: 97
Thanked 418 Times in 366 Posts
Default Re: Lincoln SA200 That does not weld.

Others mentioned everything to try but a low idle set too low will not let idler work and will not strike a arc. Set idle up or try pinning it on high if has R57 idler then if no arc keep looking at connections and coils.
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Lincoln SA200 running like poo dtscott Welding Shop 6 09-04-2011 12:45:13 AM
Lincoln SA200 welder generator, no output? Arkie Welding Shop 9 03-24-2011 08:43:48 PM
Lincoln SA200 Welder clintonmetalcraftsman Welding Shop 4 08-13-2010 09:25:38 AM
I cant seem to get complete information on the Lincoln Shield Arc SA200 DC we own. rocketgirlee Welding Shop 2 05-05-2010 06:05:31 PM
Seating brushes in a Lincoln SA200 mr welder Welding Shop 2 02-28-2009 10:13:09 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 01:13:42 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277