Posted by 440roadrunner on March 31, 2009 at 16:58:03 from (98.145.76.31):
In Reply to: delco 10si posted by Bob M on March 31, 2009 at 16:39:06:
In addition to what Bob told you, here's a few more comments from the mentally aged.
It PROBABLY is not the regulator--that is, they usually don't fail in this manner.
It PROBABLY is resistance in the circuit, and this could either be in the batt + or the ground.
If you have a good meter, run the thing at a good fast (charging) speed with the battery up, and if possible, the lights on
Stab a probe DIRECTLY on the battery positive and stab the other directly on the alternator batt output stud. There should be VERY little voltage, maybe a few tenths, the lower the better
Ditto the ground. Stab a probe directly onto the batt neg post and the other directly to the alternator case. There should be almost no reading, the less the better.
In the case of equipment (not cars or trucks) which should have good solid grounds and little harness length, probably 3 tenths or less should be your "upper" limit.
I don't remember exactly the construction of these, but it seems to me that the internal mounting screws for the regulator could also cause a problem--loose or corroded means the ground for the regulator is insecure
Also I generally detest these so called "one wire" situations where the sense wire is also the main output lead. Any resistance in the charging lead means that the voltage will be high. Once again, in equipment/ tractors, with short harness length and good grounds, this really should not be a problem.
I'm not sure why, it's possible for certain battery problems (bad battery) to cause this situation.
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 - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
... [Read Article]
Latest Ad:
1945 Farmall wide body gas with pto and front plow. Runs good but needs new points.
[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.
