[GMCDAC]

I doubt this will be a help since my setup uses an old power steering pump and the valve is different than yours, but this would work exactly the way you are trying to get that one to work. It is pressurized both directions.

I don't do online photo hosting so I can't caption each picture.

Pic1 Valve and pump. Push foreward on the lever to extend the ram, pull the lever back and that retracts the ram. The line closest goes to the pressure side of the pump. The return line (low pressure) is on the opposite side of the valve.

Pic2 Bottom of the control valve. Both of these hoses coming out of the bottom go to the cylinder. The "A" hose goes to the stationary end of the cylinder and the "B" hose goes to the ram end of the cylinder. If you can't read the letters, A is on the left, B on the right. Ignore the pump pressure hose on the far left for the moment.

Pic3 The hydraulic cylinder.

Sorry it is so filthy but even though this is a vintage and kind of a rare garden tractor, it's a workhorse.

DAC