Posted by Steve@Advance on March 12, 2019 at 18:18:59 from (66.169.147.211):
In Reply to: Can a bad alternator posted by flying belgian on March 12, 2019 at 17:54:27:
It can, but so can any thing else that's not turned off, and a bad battery can discharge itself with no external draw.
If this is an old school tractor, pre electronics, you can do the "spark test".
Warning! Only do this in a well ventilated area and not with the battery on a charger!
With everything off, and some charge in the battery, remove one cable, touch the cable to the battery post and watch carefully for a spark. There should not be a spark.
Or connect an incandescent test light between the post and disconnected cable. The light may glow very dimly, preferably not at all.
If there is a spark, or the light glows bright, start by disconnecting the alternator wiring. If the draw stops, the alternator is bad.
If it still has a draw, start disconnecting other accessories, wire harnesses, keep testing between each disconnect until you narrow down the drain.
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 - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
... [Read Article]
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.
