Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

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

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Case Tractors Discussion Forum

Magneto problems

Welcome Guest, Log in or Register
Mikey S.

12-12-2005 20:24:41

Report to Moderator

I"m looking for information on how to rebuild a magneto on a Case SC tractor. The year range is from 1940-1950 and it"s 4 cylinder gas.

That"s all the info I have (right now) on the tractor, I don"t know if more is needed or not.

If anyone can help it would be greatly appreciated.

[Log in to Reply]   [No Email]
Mikey S.

12-15-2005 07:30:47

Report to Moderator
 Re: Magneto problems in reply to Mikey S., 12-12-2005 20:24:41  
So my uncle says he is looking for a Case SC 41 magneto. He needs a rotary button, gaskets, condensor, and points.

Does anyone know where he can get these at?

He also mentioned something about wanting a converter (electric/electronic). Does anyone know anything about that?

[Log in to Reply]  [No Email]
Glen in TX

12-15-2005 10:42:55

Report to Moderator
 Re: Magneto problems in reply to Mikey S., 12-15-2005 07:30:47  
I sent you a email about mag parts. No electronic conversion for the Case mag unless you want to go with a later Bosch high $$$ electronic mag that used for industrial engines. You could go with a Delco or IHC battery distributor with the Pertronix electronic ignition conversion installed. If you don't already have a generator or electric start that may not be a option.

[Log in to Reply]  [No Email]

12-13-2005 17:30:16

Report to Moderator
 Re: Magneto problems in reply to Mikey S., 12-12-2005 20:24:41  
The old manual lists a Case 41 mag for the S and VA series. I have a VAC with a Wico Model XH1344 mag on it and its worked fine for many years. Reading in the manual, it states Series D after 4607032, C, S and VA are equipped with magnetos which have a 25 degree lag angle impulse coupling. FYI..

[Log in to Reply]  [No Email]
Glen in TX

12-13-2005 22:31:29

Report to Moderator
 Re: Magneto problems in reply to M5G, 12-13-2005 17:30:16  
Early ones were base mount mags using 30 or 35 degree impulses. Later ones used the flange mount mags for Case S & D series set to 25 degrees. The flange mount mags for all V series using a mag were to be set at 15 degrees for the continental engines. Later V series used a distributor. The impulses are adjustable on the Case and Wico flange mount mags so they can fit either. All parts are available for the Wico XH again and new complete mags.

[Log in to Reply]  [No Email]
hector gemme

12-13-2005 02:16:38

Report to Moderator
 Re: Magneto problems in reply to Mikey S., 12-12-2005 20:24:41  
HI I have a good h4 magneto for sale.HECTOR

[Log in to Reply]  [No Email]
Glen in TX

12-12-2005 21:31:10

Report to Moderator
 Re: Magneto problems in reply to Mikey S., 12-12-2005 20:24:41  
Mikey, I rebuild mags and also have info or parts if you want to tune up or rebuild it yourself also. First would have to know which mag you have on the SC. The Case flange mount mag model 4JMA has the Eagle on the top coil cover. The later Case 41 mag has a smaller Eagle on the side of main aluminum housing. Many Case magneto parts are hard to find now and haven't been made new in 30-40 years now so just depends on the condition if it's rebuildable or what you want to spend on it. Some other mags used on SC were Splitdorf, Fairbanks Morse, or later replacements in Wico or Bosch brands also. Most all parts are available yet for the later Wico, Bosch or Fairbanks Morse mags. Some will also convert them to a battery distributor like a Delco or IHC or even use a IHC H4 mag on them. Parts are available for those also.

[Log in to Reply]  [No Email]
Fred in Utah

12-13-2005 08:18:52

Report to Moderator
 Re: Magneto problems in reply to Glen in TX, 12-12-2005 21:31:10  
Glen, I have a 1948 Case LA that has sat for 20+ years. I would like to restore the tractor. It has the mag with the Eagle on top. How do I go about restoring and testing? I can turn the mag by hand but it is hard. It had a lot of dirt blow into it over the years. How do I clean it? Are there instruction some where I can follow? Thanks, Fred

[Log in to Reply]  [No Email]
Glen in TX

12-13-2005 09:13:38

Report to Moderator
 Re: Magneto problems in reply to Fred in Utah, 12-13-2005 08:18:52  
Your LA has the older Case base mount mag called a model 4CMA. Not my favorite to work on. You'll need to get it apart and blow out the fine dust and regrease bearings and it's good to recharge magnet if you can. Rewound coils, new gaskets, rebuilt condensers and very few NOS parts are what is available for the 4CMA model. If you get a good blue spark after cleaning points it might be okay but you need to get the dust out of it or it will cause arcing inside. Copies of the old Case Service manuals come up for sale frequently on ebay and other places too. If you need copy of parts manual for 4CMA email me.

[Log in to Reply]  [No Email]
Mathias NY

12-13-2005 04:19:28

Report to Moderator
 Re: Magneto problems in reply to Glen in TX, 12-12-2005 21:31:10  
Has anyone attemted to use non-Case parts in a Case magneto?

Given the wide variety of aftermarket coils, points, and condensors, I would be shocked if some combination of these couldn't be made to work.

[Log in to Reply]  [No Email]

12-13-2005 17:35:14

Report to Moderator
 Re: Magneto problems in reply to Mathias NY, 12-13-2005 04:19:28  
I have a Wico magneto on my VAC...been there for 45 ot 50 yrs and still clicking.

[Log in to Reply]  [No Email]
Glen in TX

12-13-2005 09:23:28

Report to Moderator
 Re: Magneto problems in reply to Mathias NY, 12-13-2005 04:19:28  
New gaskets, some substitute new condensers or rebuild with electronic capacitor, rewound coils, scarce NOS parts, new bearings, new oil seals are available. Some Slick coils will fit certain models if you can find them used or NOS. New Slick aircraft coil prices are outrageous. I've tried all kinds of other combinations but it usually takes more parts mags and too much time. Impulses get real worn out and those on the Slick aircraft mags are still simular but still not quite the same and no one is going to pay the aircraft price for those when a new Wico mag and other options are available. Slick bought out the Case mag division years back and scrapped all the tooling and dies and molds and parts were discontinued by them in the late 70s. So the cost to reproduce new caps, rotors, and points and other parts would be more than most people would pay.

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

Hop to:

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

Today's Featured Article - Tractor Profile: Earthmaster - by Staff. This tractor, manufactured by the Earthmaster Farm Equipment company in Burbank, California was made for only two years. The Model C came out in 1948 and was followed by the "CN" (narrow-width model), "CNH (narrow-width high-crop model), "CH" (high-crop), "D" and the "DH" (high-crop) in 1949. The main difference between the models was tire size, tractor width and cultivating height. The "D" series were about 20 inches wider overall than the ... [Read Article]

Latest Ad: Rebuilt 1979 Ford Truck Rockwell Rear axle. This axle will also work as the rear axle in a tandem set up. This is out of my F700 and is a single speed. Rockwell with 6 hole wheel lugs. [More Ads]

Copyright © 1997-2021 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