Posted by Ole Shovel on February 18, 2010 at 23:16:08 from (208.246.9.41):
In Reply to: J-4 Magneto reloaded posted by Coax on February 18, 2010 at 22:09:29:
The wire to the points and the ground tab on coil have to disconnected to check it. Points wire to the center secondary output button should read no more than 12,000 ohms max secondary resistance. More than that or no reading at all it"s bad. Then from the points to the ground tab on side of the coil no more than .4 ohms max primary resistance. Again more or nothing it"s bad. You may get decent readings there and the coil could still be bad because of windings or insulation breaking down inside that only be checked on a coil tester that does a load heat firing test. Same readings also work for the IH H4 magneto.
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: Miracle Formula for a Stuck Engine - by Edited by Kim Pratt. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: I have a stuck 4 cylinder engine. Two pistons right at the top, other two down. From underneath everything looks good. Up top looks bad. Thanks in advance."
... [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.
