Logo
FULL SITE MENU

1950, johnson tn26 coil

I guess you know you bought the wrong one. The correct one is part number 580040 and comes at a dear price. Having said that, some guys have removed the new coil from the laminations and installed it on the old ones. Check it at Ask-A-Member forum at www.aomci.org and somebody will give the details.

Disclaimer: I'm assuming you have the one I'm thinking of--without taking the time to look it up. It has the pushrod-operated breaker points, right? Yep, that's the one. Some say it is made of unobtanium.

EDIT: OK, I looked it up, and I think I gave you some incorrect information. I believe your coils are part number 375189. Those are the ones with the round rotating magnet in the center AND push rod points. The 375189 coils are listed as unavailable. However, they are nearly bulletproof. Are you sure you need replacements? If you do, a free wanted ad at the aomci website probably will find some used ones.
 
Last edited:
fdrgator said:
I guess you know you bought the wrong one. The correct one is part number 580040 and comes at a dear price. Having said that, some guys have removed the new coil from the laminations and installed it on the old ones. Check it at Ask-A-Member forum at www.aomci.org and somebody will give the details.

Disclaimer: I'm assuming you have the one I'm thinking of--without taking the time to look it up. It has the pushrod-operated breaker points, right? Yep, that's the one. Some say it is made of unobtanium.

EDIT: OK, I looked it up, and I think I gave you some incorrect information. I believe your coils are part number 375189. Those are the ones with the round rotating magnet in the center AND push rod points. The 375189 coils are listed as unavailable. However, they are nearly bulletproof. Are you sure you need replacements? If you do, a free wanted ad at the aomci website probably will find some used ones.
Click to expand...

Thanks that looks like the right one. I switched all the parts from the lower firing cylinder. Points, plug, wire , condenser coil and still no spark on upper cylinder. Could it be a ground issue? Any thoughts
 
Assuming the coils are good, by far the most common no-spark issue is dirty breaker points. I suggest removing them and take them apart & degrease them and polish each contact shiny bright, individually. Reassemble and set gap to .020" at widest opening. Do one set at a time so you have a sample of how they go together and don't lose any of the many small insulators, etc.

You may be surprised when you see spark!
 
I'm new to this forum, I have a question, I'm repairing a 1950 TN 26, And I have a dead coil, I've already cleaned and polished the breaker points, ( I have new ones on the way) the good coil sparks great. My question is, I found a new coil, numbers right 375189, but it has no spark plug wire soldered to the side, the owner sent me pictures, the solder is there, but no wire, is it possible to solder one on myself ? I dont want to ruin a new coil. Thank you for any help. [email protected]
 
Yes, that is the way they have always been supplied. You have to solder the wire on. Not a good place to practice if you are not experienced at soldering.
 
Back
Top