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

Farmall & IHC Tractors Discussion Forum
:

Farmall M electrical issues

Welcome Guest, Log in or Register
Author  [Modern View]
hobylobymarket

04-28-2021 18:11:09




Report to Moderator

Hey guys, So I have a 47 M, I installed a new battery, tried to start it, and a wonderful pop noise followed by a puff of smoke occurred. Now all the electrical is deader than a doornail. It looks like the previous owner installed a Delco alternator and an internally resisted 12V coil. I have no idea what the issue is. I hunted for a fuse, couldn't find one. And now I'm out of ideas. Anybody got anything????

[Log in to Reply]   [No Email]
hobylobymarket

04-30-2021 08:43:56




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
Thanks guys, This is a new to me tractor. Turns out there was a really nasty oxide layer on the battery terminal cables. I mixed up some nitric acid solution and used it to clean the terminal cables. The motor turned over, now there's a really bad carburetor leak( like someone opened a faucet). Should I rebuild the carb? Or is it something small like a bad float, or needle isn't seating properly? This is a learning curve for me. I'm a full time chemistry student, I've had some experience with Diesel engines but never touched a gas engine before.

[Log in to Reply]  [No Email]
caterpillar guy

04-30-2021 03:54:53




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
In the future replace the battery with those group 31's with the stud on top. Less cleaning with easier to clean also none of those pesky clamps to be over tightened and distorted. Clean all connections and check to see which polarity your coil is and which way the battery is hooked up. Reversing things makes for a good smoke show quickly.



[Log in to Reply]  [No Email]
Ellis Kinney

04-29-2021 07:40:26




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
It is possible for the cable ends to look OK, but the cable be all green and nasty inside the insulation. Ellis



[Log in to Reply]  [No Email]
DeltaSteve

04-29-2021 07:39:18




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
Agree with the others. Most likely/first place to check is battery terminals. Clean them well. If the cables or clamps are frayed/rough,replace them.I have acctually had one melt away half a terminal when it shorted like that.



[Log in to Reply]  [No Email]
BarnyardEngineering

04-29-2021 04:05:45




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
There is no fuse for the main electrical connection on any vehicle.

If you have no electrical at all one of the main battery connections was poor when you tried to start the tractor, causing an arc (the pop and puff of smoke). Now what little connection there was is insulated by a layer of black soot.

Remove all the heavy battery connections one at a time, clean them with whatever abrasive tools it takes, battery terminal tool, wire brush, file, sandpaper, whatever it takes, until the connections are clean and shiny. Then put them back together and make sure they are tightened down solidly so they don't move when you try to wiggle them with reasonable effort. If the cable ends look janky at all, replace the cable.

[Log in to Reply]  [No Email]
Rich'sToys

04-28-2021 18:46:07




Report to Moderator
 Re: Farmall M electrical issues in reply to hobylobymarket, 04-28-2021 18:11:09  
Where did the smoke come from?

Since you replaced the battery, I assume you cleaned all the connections? Might not hurt to check them again.

Is this tractor new to you, or was it running before you replaced the battery?

The tractor would originally have had positive ground, but changed over to negative when the alternator was added. You probably know this also, but just throwing some things out there.

[Log in to Reply]  [No Email]
used red MN

04-28-2021 19:24:23




Report to Moderator
 Re: Farmall M electrical issues in reply to Rich'sToys, 04-28-2021 18:46:07  
I will echo Richs question about clean, good, tight battery connections. I would recheck them. Quite often if there is a poor connection between the battery post and terminal the arc between the two sounds like a pop. The terminal is still in place but only setting on the dirty part of the connection and not conducting any electricity. If you hooked the battery up as a Positive ground the Delco alternator would have released it smoke compartment immediately, long before you would have been able to operate the starter.

[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