Posted by John T on November 21, 2018 at 07:14:46 from (174.255.129.220):
In Reply to: Coil-12v or 6v posted by tomturkey on November 20, 2018 at 15:20:14:
Tom good questions here are my answers:
1) "Previous owner converted to alternator."
If so its likely NEGATIVE Ground so the coils input from ign switch should be its + and to distributor should be its -
2) "Shine up points, no spark, test for power to coil good. test light on distributor side of coil, no blinky blinky while cranking."
A test light on the coils output to distributor should flash on (when points open) and off (when points closed) if not shes never gonna fire. If the coils LV primary from + to - is an open circuit (infinity ohms) the coil is BAD
3) "remove wires from coil test resistance with multi-meter, 0 resistance from input terminal to output terminal. Not shorted, but no resistance. Coil is bad-correct?"
Input to output should be around 1.5 ohms if a 6 volt coil and around 3 ohms if a 12 volt coil. If its an open circuit infinity resistance its BAD
4) Wire to input terminal comes from a resistor. Is my coil 6v or 12v? And what do I replace it with?
Typically if it uses an external ballast resistor its a 6 volt coil on a 12 volt system. Again a 6 volt coils has around 1.5 ohms LV primary + to - and around 3 ohms if a 12 volt coil. If its a 12 volt tractor Id use a full true 12 volt coil no ballast required
If all else fails work through my Ignition Troubleshooting Procedure linked below
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
