Posted by Janicholson on January 25, 2010 at 19:47:46 from (64.61.212.132):
In Reply to: m and w hand clutch posted by David Siders on January 25, 2010 at 15:27:09:
By way of explaining, the way they work is as follows. This setup disconnects one rear wheel from the rest of the tractor. It is comparable to having one axle broken on a dump truck. The transmission is turned through the regular master clutch. This also powers the constant mesh gear in the front of the trans. The constant mesh gear powers the PTO shaft. In a normal H or M the PTO thus stops when the master (foot) clutch is pushed in. With the M&W the tractor is stopped from moving by using a clutch as above to cut power to a rear wheel. On these (and many other tractors of various makes) the wheel brakes are mounted on the shaft directly out of the differential. These pinion shafts drive the main axle bull gears on each side. On a Hand clutch such as the M&W, the left brake drum and shaft are replaced with a shaft inside a tubular shaft system that drives the pinion. This double concentric shaft has a clutch on the outside end, and a brake drum as well. When the hand clutch is disengaged, the inner shaft from the differential turns doing nothing. This allows the outer shaft to stop, and the differential gears turn rapidly but neither wheel turns. When this happens the PTO and all gears in the trans continue to drive normally. When the clutch is engaged, the two shafts are now turning as one, and the system pulls from both wheels equally. (it is as though the axle was repaired). I hope this helps. Jim
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