Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

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

Tractor Talk Discussion Forum

Generator Question

Welcome Guest, Log in or Register
Author 
JM

04-04-2004 12:01:25




Report to Moderator

Had my MM UB out yesterday for prep. for some spring plowing. The battery had been on a float charge and the tractor started right up. I drove it around to warm it up and then backed it up to the plow. While hooking up the plow the engine stalled and as I attempted to restart, the battery was dead-nothing.I am assuming it stalled because it had no spark. I put the charger on it and it took a charge and I restarted it. My question is what are the procedures to check to see if the generator is putting out an adequate charge. I have a good digital meter. Thanks in advance for any help.
JM

[Log in to Reply]   [No Email]
Bob M

04-04-2004 14:18:15




Report to Moderator
 Re: Generator Question in reply to JM, 04-04-2004 12:01:25  
Like John said, a voltmeter across the battery terminals with the engine running at speed should show 7.0 - 7.5 volts. Less than 6.3 volts means the battery isn't being charged. Or punch below for a generator/regulator flow chart that may help.

However from your description it sounds like the problem may be an intermittant connection on a battery cable. Before you do anything else clean/tighten the cable connections to the starter solenoid and the frame ground; also at the battery terminals.

[Log in to Reply]  [No Email]
Jon H

04-04-2004 14:06:44




Report to Moderator
 Re: Generator Question in reply to JM, 04-04-2004 12:01:25  
The others posted good advice about telling if the generator is charging. What you describe sounds like a classic case of a corroded battery connection. The cable connected long enough to start the tractor,then opened the connection to the battery leaving the ignition system running on generator power only. When you lugged the engine down while backing up to the plow you got engine rpm below that where the generator could power the ignition and it died.

[Log in to Reply]  [No Email]
bob

04-04-2004 12:40:26




Report to Moderator
 Re: Generator Question in reply to JM, 04-04-2004 12:01:25  
to field test for a bad generator, loosen both battery cables so they will easily pull off by hand, then put them on posts so they make good contact. Start the engine & let run at idle. Lift both battery cables off at once. If engine dies, you have a bad generator.



[Log in to Reply]  [No Email]
Keith-OR

04-04-2004 15:42:14




Report to Moderator
 Re: Re: Generator Question in reply to bob, 04-04-2004 12:40:26  
You only have to remove one of the battery cables, As that takes it out of the circuit. As Bob said, if tractor dies then you are running on the battery. Generator or regulator is not functioning properly... All the battery is for is to store energy to start you tractor untill the generator or alt. is supplying energy to run ign. system.

My nickel's worth



[Log in to Reply]  [No Email]
john

04-04-2004 12:29:53




Report to Moderator
 Re: Generator Question in reply to JM, 04-04-2004 12:01:25  
A easy test to see if it is charging is to hook a volt meter to the battery post while the engine is running. A 6 volt system should read about 7-7 1/2 volts at the battery if it is charging. While this will not pinpoint the problem it will at least tell you if it is charging.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


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