863 auxiliary problem

[grandscapesllc]

I had the aux spool end cap and springs off of the front of the control valve while the engine was running. I could move the rod back and forth and it would bog down a little, the spool moves freely. I could move the toggle switchside to side it would try to push the spool but I could hold it with my thumb, oil would come out of the front. Seems like everything is working, but it won't move the spool

 

[grandscapesllc]

Any ideas?

 

[Sapientoni]

In all my years of working with pneumatic spool valves, I never found one that could be "cleaned" and would operate differently from when it failed. They are so tightly toleranced, a spec of contamination was a failure. Hydraulics might be more tolerant with 30 times the pressure, but it sounds like there's a restriction or a free flow somewhere in the system.

 

[grandscapesllc]

It's weird, the spool valve moves freely and oil start to pump when I move the thumb switch with the forward cap and spring removed, but it must not have enough pressure to move the spool. Still waiting on a guage to test charge pressure

 

[mibh1]

mine works in one direction but not the other. having tried everything else, i'm going to try a new spool.