Posted by John T on October 24, 2014 at 09:09:38 from (216.249.72.121):
In Reply to: Cub LoBoy Coil posted by bob landers on October 24, 2014 at 08:43:20:
If you work through my Ignition troubleshooting procedure it can help find the problem. As the points are usually closed if all is well and wired right there's usually no voltage (with respect to ground) on the coils output (to distributor) terminal, see my procedure.
"First question: shouldn't the coil have some resistance, maybe a few ohms?"
YES the coils LV primary between the little + and - terminals should be continuous and have a resistance of around 1.2 to 2 ohms for a 6 volt or 2.5 to 4 ohms for a 12 volt coil.
"Second question: If it's bad and I think it is, would it better to get the hotter coil that requires external resistance?"
While a 6 volt coil would require a series voltage dropping (12 down to 6) ballast resistor if used on a 12 volt tractor, I wouldn't think of that as a HOTTER coil as you asked.
On a 12 volt tractor you can EITHER use a full true 12 volt coil (NO Ballast required) or a 6 volt coil PLUS the ballast. A 12 volt is easier and needs less wiring and no ballast etc. to fool with.
One reason however to use a 6 on a 12 volt tractor is if you have a ballast by pass circuit/system is it can improve starting (hotter spark) in cold weather
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 - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
