Posted by mkirsch on September 16, 2013 at 10:09:26 from (64.80.110.75):
In Reply to: Hydraulics.... posted by John M on September 16, 2013 at 03:25:30:
If the 3pt goes up with the valve either forward or back, and drops when the valve is in the center position, the valve is blown out internally. It's probably junk now.
Probably due to the deadheaded hose. There is no relief valve on that type of valve, and the one down in the belly pump is either insufficient or not working.
The pressure built up and the old o-rings couldn't take it.
If he wants one-way operation, he can just connect the cylinder directly to the belly pump outlet and use the lever on the side of the tractor. That is the cheapest fix.
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