TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Allis Chalmers Discussion Forum

alternator

Welcome Guest, Log in or Register

Author

nosrac

11-15-2005 16:18:27

Report to Moderator

i removed the alternator,ammeter and destroyed wiring from a wd45 and installed a single wire alternator.voltmeter and new wiring,everything works ok except when the tractor is not used for a period of time ,the alternator drains the battery.can i install a doide in the alt.wire to correct this problem?
thanks butch

[Log in to Reply] [No Email]

John T

11-15-2005 17:11:19

Report to Moderator

Re: alternator in reply to nosrac, 11-15-2005 16:18:27

nos, I believe after a long period of time a disadvantage of the one wire units is they can eventually drain a battery. A diode (one way current flow check valve) can help cure such a problem, but its gonna take like a 50 amp diode depending on the current rating of your alternator. Jury rigged cures might be a 50 amp rated ON/OFF switch or a sort of knife switch or some kind of 50 amp cutout relay device at the battery or starter post or wherever the alternator is wired to turn off/disconnect that One Wire from the battery when shes setting.

However, are you sure its the Alternator and not other minor shorts that may be draining the battery??? You may wanna disconnect the alternator n see if she still discharges and/or trace down other minor shorts. Or else the battery itself may be self draining?? has it been checked???

An "ideal" voltmeter is infinite ohms (open circuit) but none are ideal, where n hows it conencted or switched in ??? Regardless, it should be such high resistance it would take foreverrrrr to drain a good and big battery.

If you remove the ungrounded cable from the battery and attach a test lamp to the battery post and its other end to various wiring locations you can find where theres a bad short to frame ground. Or use a Voltmeter to find high resistance shorts.

John T

[Log in to Reply] [No Email]

nosrac

11-16-2005 18:44:55

Report to Moderator

Re: alternator in reply to John T, 11-15-2005 17:11:19

john t
thanks for the info,i can find no short but haven`t load tested the battery yet,it is nearly new but that doesen`t mean it is good.when i leave the ground cable disconnected ,the battery stays charged.thanks again.
butch

[Log in to Reply] [No Email]

steve(ill)

11-16-2005 19:07:15

Report to Moderator

Re: alternator in reply to nosrac, 11-16-2005 18:44:55

the single wire units are supposed to have an internal diode to stop feed back. they are kknown to fail and have the draw down problem you mention. that is one advantage of the 3 wire alternator

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

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 ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy