.. 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 - A Lifetime of David Brown - by Samuel Kennedy. I was born in 1950 and reared on my family�s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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