Thanks, will be working on that after I troubleshoot my AC. Did talk to our local JD dealer and the parts guy pulled up the diagram of the system and suggested I also check the rubber coupler on the intake of the hydraulic pump saying that he's seen either the hoes clamps can come loose or their could be a small crack that's allowing air to be sucked in.
Well this last weekend I checked the sump screen and it was ok. I did notice that I do have some minor leaking at the loader quick connects. I need to use the tractor this week so tighten up those hoses will have to wait until this coming weekend.