Cory is not even close. You cannot just change one spur gear. They come in sets and on a M the tooth total for each speed (1st thru 4th) has to add up to 73 teeth. (And don't worry about the gear pitch. If I remember corectly, all the gears are 5 pitch but it doesn't matter.)
That means the countershaft 1st gear has to be changed as well. However, the low-low countershaft gear is integral with the countershaft (that means one piece). Because the regular first gear is a cluster gear (1st and 2nd), you also need the low-low 2nd gear for the countershaft. The reverse idler gear also has to be changed.
The differential has to come out to liberate the mainshaft. The left side bull pinion has to come out as well as the bull pinion cage. Before you do that the bull gear has to disappear. When all that is done, remove the PTO and PTO extension shaft. You can now get to the countershaft. I may have missed a few steps so get a manual. I & T may be good enough.
If you want to save yourself all this trouble, just swap the complete rear frames with axle housings attached. Or change engines because I assume one of your engines is better than the other one. I suggest you go to caseih.com to verify that the low-low attachment includes 3 gears and a shaft. Good luck.
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 - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.