Posted by john in la on December 04, 2021 at 18:19:29 from (97.80.68.11):
In Reply to: Alternator on a cub posted by grandpa Love on December 04, 2021 at 17:04:07:
One of those small wires is the sensing wire. It measures the voltage deep in the wire system to tell the alternator when to cut off and on. By being buried deep in the system it accounts for voltage drop over the system. Since a old tractor has a very small wiring system hooked to the charge lug like it is works fine.
The other small wire is the excite wire. Power is supplied to this terminal at start up to excite the alternator and start it to charging. Once charging the alternator sends power back out this wire. It is what makes the dash light go out. Equal power on both sides of the light so no current flow. Problem is feedback of power into the system on this wire will supply power to the ignition coil when the key is turned off. Hence the reason you need a dash light or diode in this wire. Exception would be a motor that does not require battery power to run such as a diesel motor. This wire is usually hooked to the key switch also to disconnect power preventing it from draining the battery over time.
So if the motor is such as you can turn it off such as a diesel and you disconnect the battery after each use that system will work just fine.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.