FEL Hydraulic Problem

[Bill06238]

I have a 4ft FEL on my Kubota B7200. The boom will not stay up with the bucket loaded or unloaded. I checked the pressure relief valve setting, it was set low and reset it to 1500psi. The bucket still lowers at about 3/4" per minute. I dead headed a pressure gage into a working port on the valve and found that when the valve is opened the pressure is 1450 psi and when the valve is closed the pressure in the line drops down to 0 psi. Could the valve spools be worn to the point that the valve will not hold the pressure? What elese can I check?

 

[herbenus]

MY JD drops too. But more like 3 inches per hour under load. I don't get under it.

 

[DavidJ]

That does sound excessive. If you're not seeing any fluid leaking it could be the piston packing leaking by or as you mentioned, the valving. You might try Kubotas site to see if there's anything listed as to acceptable drop. If not, ask your dealer they should know.