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dvdriz

Mystery Solved - Hydraulic Control Stiff

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dvdriz

I have a old Legacy that has the foot control for the hydraulic lift. The control works nice and smooth when the engine is not running however it gets very stiff and does not return to the center position with the engine running. It will raise and lower the plow nicely but just stiff and not bouncing back to center. Power steering and drive system works well. Anyone ever have this issue before?

 

Found the problem in case anyone has this issue. The foot control has a rocker shaft that goes through the center of it and secures the non moving end of the hydraulic cylinder to the frame. The foot control and the rocker shaft had corroded into one solid piece at one end.  So when there was pressure on the cylinder it was binding the foot control. One nylon bearing and a little clean up at its like new!

Edited by dvdriz
Fixed the problem

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dvdriz

I messed around with this a little more and the valve actually seems to be stiff when the system is under load. In my case the plow is lifted in the air. I noticed this morning I left the plow raised all night and when I lowered it this morning without the engine running, the valve was super stiff until the plow hit the ground. Then it seemed like normal. I'm really leaning toward a bad valve. Might have another one laying around in my stack of parts to try out. I think I should go ahead and change the fluid and filter while I'm at it too. 

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