The tractors you have all have hydraulically operated TAs. This means that in direct drive (lever forward) there is a multi-disk wet clutch (not the main clutch) that provides a locking mode for the TA reduction, this causes the entire TA to rotate as one item, no reduction. This clutch is provided pressure from the MCA pump. When the TA lever is pulled back (quickly, as though in a hurry) The pressure is released from this clutch, and a one way clutch now prevents the TA assembly from rotating backwards because it is reducing the speed of the input shaft. This one way (sprague) clutch is supplemented on yours with a second hydraulically operated multi-disk clutch. This clutch prevents the TA housing from rotating forward. This prevents free wheeling, or the tractor ground speed from going faster than the engine would drive it in TA. The issue in that the TA is not designed to be a method of slowing down at road speeds. The second Locking TA clutch cannot stand the high load shock many times, and the engine would be forced to excess RPM if it was already wide open. If you are in either direct, or TA there is no issue going down hill. There is no issue pulling the TA back (quickly) when going down hill pulling an implement under load in a field. The issue is that the TA locking clutch is not a brake. In any situation that would cause the tractor to speed up when the main clutch was pushed in is a situation that should keep the TA in the position it is. Starting out in road gear with the TA back is one of its best features. Shifting to direct (quickly) when the engine reaches max rpm is slick as a whistle. Enjoy. Jim
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 - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[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.
