Farmall & IHC Tractors Discussion Board |
Re: H 4 mag coil
[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]
Posted by Bob on July 23, 2006 at 13:11:13 from (64.21.249.40):
In Reply to: Re: H 4 mag coil posted by Bob on July 23, 2006 at 13:05:54:
GOOD GRIEF... I tryed backing ip to correct several "typos", and posted the message THREE TIMES. Here's the corrected version: YES, it should "beep". NO, it does not indicate a bad coil. With the breaker points OPEN, the coil's primary winding is connected to ground at one end, and the points/condensor at the other end, so the meter WILL show conductivity to ground, through the coil's primary winding, to ground. It is IMPOSSIBLE to accurately evaluate the condition of a coil with an Ohmmeter. Yes, an Ohmmeter will catch a DEAD short, but even one shorted turn in one of the coil's windings will greatly reduce spark output. Coil are tested with a machine that RINGS them with an AC current, and displays the condition of the coil depending upon how it RINGS (oscillates). Think of a "good" coil as a bell that rings brightly when struck. A "bad" coil is much like a cracked bell that gives a dull "thud" when struck, instead of a bight note. A shorted or partially shorted coil acts the same way, electrically, and that is what the coil teater displays as coil condition.
Replies:
Home
| Forums
Today's Featured Article -
Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
Copyright © 1997-2024 Yesterday's Tractor Co. 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. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|