Put on a new hydraulic pump and couple. The splines were worn. There is no hydraulic function. Help. Really need it fixed. Loosened the nut for the outlet off the pump with it not running and oil started seeping as soon as it got loose. Didn't take it all the way off. Same with the diaphragm. Put 15 gallons of fluid in and the oil level is visible just taking off tua cap. When it is running, you can move any if the controls and there is no load. No idea what to do....