I have also only seen 3 terminal cutouts on any early IHC tractor. The Ford Model A auto used a 6 volt two terminal cutout. The adjustable 3rd brush tapped power from the commutator and supplied the field coils which were INTERNALLY grounded inside the generator case. There was no reason for the third or F terminal on the Model A generator or cutout as the output was fixed depending on the position of the third brush. As John stated however the addition of lighting on the tractors allowed the operator to select high or low charge by varying the field resistance EXTERNALLY of the generator by using the lighting switch or fixed at high output by grounding the wire off the F terminal of the generator under the cutout mounting screw direct to ground. The high output could still be adjusted on the tractor generator by moving the 3rd brush but the external ground allowed two different charge rates. Just my two cents as my 1931 Ford Model A uses the two terminal 6 volt cutout.
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 ]
Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
