.. If its the original steering vaalve , just "rebuilt" I'd lean towards someone not adjusting it correctly. I was asking as I got involved in a similar head scratcher--- someone rebuilt the same valve in a 644B loader and would lock in one direction.. I finally figured out that the "rebuilder" added a plug that he thought he misplaced during dis-assembly to a port on the bottom of that valve thats been pictured here--- some systems used a plug in the port but this one didnt---removed plug and all was well. But if this is the original valve and the problem just happened during use, I'd look for someone to double check the valve settings and other items in there-- The book says to set the valves tight at something like .001 and .003 or something similar--- I usually go a couple thousandths over that so the valve isnt so touchy as your usually holding onto the wheel bouncing through the woods, so with it a little looser on the settings i think it isnt trying to steer left right so aggressively.
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Today's Featured Article - Stories From Old Farmer - by K. Pratt. Old Farmer, a.k.a. Dale Jensen began posting messages to our discussion forums at the grand age of 75. With extensive knowledge of farming and tractors, he valued the past and the ways that went with it. He shared these values with us until shortly before his passing. I spoke with Dale in his last days and requested his permission to share some of his stories with the readers of our magazine. He agreed, and provided the
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