Kubota 3 point problem

[wrenchless]

I have L5030 kubota, 3 point wont raise until i raise RPMs a lot, doesnt respond until lever is at top of travel, i have changed both hyd. filter, looked at releif valve, all good, looked at check valves (2) all good, was told to open fill cap and have someone work 3 point lever, i can hear it spraying inside cavity but cant see where, any help will be greatly appreciated

 

[treefarmerguy]

Did you check the hydraulic oil level?

 

[wrenchless]

Yes, fluid level was first thought too, i found problem, it wasnt obvious, it was under top cover that holds main valve for 3 point, the return from accessory vales were full of brass that eventually got into check valve in main valve, i took valve completely appart and cleaned it, works great now, my thought are way so many check valves in this system when they are just inches from main releif valve, thanx for the reply