Yesterday's Tractor Co. Affordable Parts, Just in Time
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
  
Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

Re: Farmall M No spark Trouble shooting guide

[Show Entire Topic]  

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

06-20-2013 22:13:58
192.208.166.30



Report to Moderator

Hang in there...willing to learn is the important part. Learning is often impatient and frustrating.

"The coil is 12v w/o resistor so, the way I understand it, it needs to have a resistor ahead of it."

What exactly does it say on the coil? The terminology "12 volt w/o resistor" sounds like it could be saying "12 volt no resistor required"

A coil is actually a transformer with one side of the primary and one side of the secondary tied together. A direct 12 volt coil does not have a resistor inside of it. The difference between a 6 volt and a direct 12 volt coil is in the number and ratio of turns of wire.

Also check resistance to ground from the -- (negative) post on the coil to distributor with the points open. If this shows a low resistance check for shorted feed through on side of distributor, short in points connection or a shorted concenser. Also check resistance from + to -- posts on the coil. Should be either about 1.5 ohms (6 volt) or about 3 ohms (12 volt). Either + or -- to the center post of coil should be several thousand ohms.

Owen is "right on" about the alternator. Disconnect alternator as he instructs and get it running before you worry about the charging system. Keep battery charged with external charger.

[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