Posted by crazy horse on July 03, 2015 at 13:41:13 from (66.222.185.5):
I've got a Farmall A with stock factory wiring, all rewired with new wire and terminals. Everything is wired properly with the correct-size wire and size #1 battery cables with good terminals. Six-volt positive ground, third-brush generator with a working cutout relay on the generator case. Charge control is done through the IHC type 4-position light switch on the dash (controled charge, full charge, full charge with dim lights, full charge with bright lights). My battery is a bit iffy and shows only about 5.7 volts when sitting while the tractor is not running. It has enough oomph to start the old girl but not much more.
So here's my problem. Once the tractor fires up, the charge rate is much too high even on the first "charge controlled" position of the light/charge control switch. At anything much more than idle speed, it pins the amp needle to +30 amps. At idle it drops to about 26 amps, still too high. Moving the third brush to different locations inside the generator has no effect on the charge rate, too high no matter where the third brush is positioned. When the tractor is running, the battery keeps its low 5.7 Volt reading.
Any suggestions as to what might be causing this? I'm getting a ton of amps, seems like the voltage isn't up to par. Should the battery not be showing something like 6.5 volts or more when the tractor is running? How about the excessive charge rate, any suggestions?
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. 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 - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
