Posted by IAtractorKid on March 03, 2013 at 11:39:33 from (184.97.60.244):
Hey guys! Have a Gresen 3 spool valve on my loader and have a few questions about it. It worked fine on my SH with M&W live hydraulics but will be going on my 400 with a 17.2gpm Prince PTO pump this summer. Valve has 2703 stamped in the top and 1084 on the bottom of the built in pressure relief valve. Questions:
How do I know if its open or closed center and what does that mean?
What are the pressure relief valves factory set at and is there any way to tell where it is now?
First handle does not spring back to center like the other two, how is that fixed?
Lastly, when plumbing to the PTO pump, will 3/4 pressure and return lines be sufficient or should I run 1"? I think my loader manual calls for 1" but both pump and valve only have 3/4 fittings.
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