Did you replace another alternator? If that tractor had the Motorola alternator, then it has an electronic voltage regulator located beneath the floor plate up under where the stairs attach. If this is the system you have, then a single wire self energizing alternator may be in conflict with the regulator if it is still in the circuit.
On my early 8000, it had the low amp output Lucas generator and a remote (mechanical) voltage regulator. We had to rearrange some of the wiring around the voltage regulator to allow the alternator to charge the battery.
If you are replacing a single wire self exciting alternator with another one, and the first one did charge the battery when it was working, then the tractor had been rewired to bypass the regulator. The wiring and its insulation is so old and brittle that anything could be the reason for failure. I think it is going to take some snooping with a voltmeter and a limited electrical load such as an old 12V auto headlight with jumper wires attached to the headlamp. I sugest this as I have been fooled by a good voltmeter reading when the wires have corroded or broken from vibration. There may be enough of a connection to give a voltmeter reading, but not enough good copper to carry any amps (thus the need for the headlight test load of about 5 amps).
Earlier this summer, I was fooled into spending $$ on a new battery for our 9000 tractor when in fact a good looking battery cable had internal corrosion that allowed correct voltmeter readings, but no power for starting or battery charging. These problems can be very frustrating!!
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 - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
... [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]
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.