Yesterday's Tractor Co. Trusted Parts Supplier since 1995
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Harry Ferguson Tractors Discussion Forum
Show Parts for Model:

Re: cold blooded to20

[Show Entire Topic]  

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

01-13-2013 04:33:50
96.39.112.129



Report to Moderator

This is a comment about the "should be wired with a positive ground" statement; I don"t think it is good to get that embedded in the thread without contesting it. John, I know you have a world of experience and knowledge about these Fergies, but most autos for decades ran with negative ground. I run my TO-20 quite happily with a negative ground. There are things that must be done to switch to a negative ground system but they are very simple and it works perfectly well. Note that DIS (waste spark) automotive systems run with one plug getting positive spark polarity and one plug getting negative. The difference is where the most erosion of the plug electrodes will occur, and on a +ve HV plug the center electrode will tend to have more erosion because the +ve ions have more mass than the -ve electrons; but the center electrodes are typically made with more durable materials than the grounded protruding electrode. And I don"t really think most of our tractor plugs die from electrode erosion anyway. But this could be a discussion for another thread!

My advice for poor starts:
Good heavy battery cables with very clean connections at all points (terminals, frame ground and at all points to starter. Plus clean starter to frame mating surfaces.
And check your starter - check the brushes and commutator surface; shouldn't be too much scoring and the brushes should float freely and be long enough and show evidence of mating all across the commutator and not just in a small strip (can judge but color and wear. Make sure the commutator segments are not shorted.

And make sure you have changed gas with the season - the winter blends are more volatile and if you have old gas it is likely going stale anyway.

Storing in a shed is the best most of us can do but tractors are massive and condensation and moisture will work to corrode and oxidize things like electrical connections. Store inside if possible; regular use is the best medicine.

And don't mess with too many things all at once! If it was running in summer, it is probably pretty close to being right! These tractors with their 6V systems worked reliably for decades and there is no good reason that can't still be true; but time allows all the degradations of electrical contacts and connections and that is the most likely issue.

Best of luck with it.

Cheers!

[Log in to Reply]   [No Email]
2tractors

01-13-2013 05:00:51
207.144.5.133



Report to Moderator
 Re: cold blooded to20 in reply to grits, 01-13-2013 04:33:50  
I Did't read anything in John's commentary that said positive ground was BETTER but merely that it came that way originally and a good way to tell if that had been changed then the alternator is a sign of change.



[Log in to Reply]  [No Email]
John(UK)

01-13-2013 06:50:32
79.76.255.227



Report to Moderator
 Re: cold blooded to20 in reply to 2tractors, 01-13-2013 05:00:51  
They don't always read what is written and put their own interpretation on it. Thank you for your observations as always....John(UK)



[Log in to Reply]  [No Email]
grits

01-13-2013 06:44:29
96.39.112.129



Report to Moderator
 Re: cold blooded to20 in reply to 2tractors, 01-13-2013 05:00:51  
Well, first I've got to say that I should have proof read better; with a +ve HV the center is +ve and the positive ions are attracted to the grounded outer terminal where most of the erosion will occur.

However, I think my reading comprehension is OK, and "should be wired Positive to ground unless you have an Alternator fitted." (noting the parts following "should" and "unless") is what lead me to believe John was conveying the way it "should" be. And since the poster said it was a 6V system "with a new rebuild generator", John's statement then reduces to the meaning that it "should be wired Positive to ground" and all I am saying is that polarity isn't a significant issue in the least - especially if it was previously running.

And the original post didn't distinguish between slow cranking and failure or weakness to "hit" so we have all made a large heap without getting clarification of the actual issue at hand. His statement that it can be jump started from 12V truck (assumption on the 12V thing) suggests contact resistance for something electrical which is overcome by the assisting higher voltage of the truck jump; with 6V systems contact resistance is just a much bigger issue and yet, properly maintained, a 6V system works just fine.

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

Hop to:

TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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