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
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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