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

Shop Now

   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.

Massey Harris & Massey Ferguson Tractors Discussion Forum
:

MF 50

Welcome Guest, Log in or Register
Author 
midnight

12-03-2004 05:39:05




Report to Moderator

My old 50 has got to the point where afully charged battery will only last about 2 days. Is there a way to determine if it's the generator, voltage regulator or a short somewhere.




[Log in to Reply]   [No Email]
midnight

12-06-2004 04:11:51




Report to Moderator
 Re: MF 50 in reply to midnight, 12-03-2004 05:39:05  
Thank you all for taking your time to help me.Big Dean I like your web site, my father-in -law was a MF mechanic all his life but he didn't get anything wrote down and I sure didn't spend enough time looking over his shoulder while he was in his shop and now he's gone Alezhmer's at 55. I'm going to start on it tonight. I'll let you know what I find, appears I'm not the only one with problem. Thanks again.

[Log in to Reply]  [No Email]
tractRgrl

12-05-2004 07:01:21




Report to Moderator
 Re: MF 50 in reply to midnight, 12-03-2004 05:39:05  
We have this same problem on our MF 50. We disconnect the positive terminal, too, but it still goes dead. Does this make sense? We've tried several brand new batteries.

Also, the meter shows that it doesn't charge when running, just decharge.

I know there are lots of possibilities why it might not charge. One possibly crazy question: We wondered if it's possible that the battery wires are hooked up backwards. I mean we hook the one marked positive to the positive terminal, but could the other end of the wire be hooked up wrong? We didn't restore the tractor and have a lot to learn, so any thoughts on this would be appreciated.

[Log in to Reply]  [No Email]
Rod in Smiths Falls, ON,

12-05-2004 17:26:23




Report to Moderator
 Re: MF 50 in reply to tractRgrl, 12-05-2004 07:01:21  
I can't speak for your tractor, but I can offer two other items:

1. My MF35 diesel shows discharge when charging. I just assumed it was because of #2 below and didn't worry because it runs fine.

2. When we converted our 1953 Chrysler M47 marine engine to 12V negative from 6V positive ground, the + and - battery terminals had to be reversed. This did in most of the gauges but caused no other trouble.

[Log in to Reply]  [No Email]
Rod in Smiths Falls, ON,

12-04-2004 13:06:42




Report to Moderator
 Re: MF 50 in reply to midnight, 12-03-2004 05:39:05  
My TEA 20 is like that. I just lift the positive terminal off the battery when I leave it. I suspect a bad connection down below somewhere under the grease, but I'm always in too big a rip to do anything about it.



[Log in to Reply]  [No Email]
Big Dean

12-03-2004 08:57:31




Report to Moderator
 Re: MF 50 in reply to midnight, 12-03-2004 05:39:05  
The way I always checked them was with the engine running connect a jumper wire between the batt terminal on the voltage regular and the A or G terminal on the generator according to which your generator has. Ground the F terminal on the generator. If the generator is good it will show a full charge on the ammeter. You need the engine running at about a 1000 RPMs when you make this test. If when you connect the jumper wire if you get a big spark or if it does not show a charge connected like that then your generator is bad.

[Log in to Reply]  [No Email]
Indydirtfarmer

12-04-2004 13:07:04




Report to Moderator
 Re: MF 50 in reply to Big Dean, 12-03-2004 08:57:31  
In addition to the possibility of a bad generator or regulator, don"t overlook the possibility of a bad ampmeter. I had one on a MF 50 of mine. Everything tested fine, but the batterey just wouldn"t stay charged. The ampmeter hadn"t worked in years, but the batterey stayed charged. What had happened was the "shunt" had finally burt out in the meter. That broke the circuit, causing me one large headache. I had the generator rebuilt. (even though the electrical shop said it was OK) I installed a new regulator, even though the old one checked OK. I went as far as to completely re-wire the entire tractor. Ended up changing EVERYTHING but the ampmeter. Finally bought an $8 NAPA meter and all the troubles went away. John

[Log in to Reply]  [No Email]
Rod in Smiths Falls, ON,

12-05-2004 17:36:20




Report to Moderator
 Re: MF 50 in reply to Indydirtfarmer, 12-04-2004 13:07:04  
Indy's suggestion makes a lot of sense. Brits run all of the current from the generator through the voltometer, don't they? Americans use a relay.

My mechanic one time rescued a guy in a restored TR6 which wouldn't go, no matter what.

He'd apprenticed in Scotland, so he took one look at the car and dove under the walnut dashboard, twisted a couple of wires and started it up. The bystanders, many of whom were car nuts, had been completely stumped.

He told me that there's too much current going through there on a TR6, the connections corrode quickly, and this was an old car, regardless of its gorgeous coach work.

[Log in to Reply]  [No Email]
Indydirtfarmer

12-04-2004 13:09:37




Report to Moderator
 Mind gone haywire! in reply to Indydirtfarmer, 12-04-2004 13:07:04  
Actually, if memory serves correct, that was a VOLT meter. Anyway, you get the idea. John



[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