chipmaker
New member
I have a 1988 model 1720, that never had remotes installed. On the right side under the floor pan is a Hydraulic Manifold Block. It has 3 ports, Inlet, Outlet and Return. There is also a control screw with a letter O on one side and S onthe other. According to the manual you turn this screw to either O or S to operate either FEL or such, or to the other position for Lift Linkage operation. Does this mean I can operate one or the other but not the both without turning this control screw? I assume all I have to do is install hydrualic lines into these ports as at the present time they are plugged and run the hose to a set of remote QD's, however I don't fully understand which line would go where to relationship of the manifold and cylinder. I understand the Outlet, (would go to supply pressure to control valve ?) what about the Inlet port? I assume the Return would be returning from a cylinder?
Manual also states the tractor can use a single or double spool control valve, so would I need to use a normally open or closed spool control valve. FWIR an Open spool control valve circulates fluid until its diverted by the valve to the cylinder. A Closed allows hydraulic presure to build and uses a relief valve to maintain a constant ready to use pressure. I would assume the tractor needs a Open type control valve. What I am looking to do is simply add a set of QD's to the tractor, which I can plug other hydraulics into (mainly a cylinder or motor) and operate from a control lever, and from the way I interpret the manual and diagram, all I really need to do is buy the hydraulic hose and QD's and a control valve, but what goes where is confusing me, as is the operation of the manifold control screw.
Any help greatly appreciated.
Manual also states the tractor can use a single or double spool control valve, so would I need to use a normally open or closed spool control valve. FWIR an Open spool control valve circulates fluid until its diverted by the valve to the cylinder. A Closed allows hydraulic presure to build and uses a relief valve to maintain a constant ready to use pressure. I would assume the tractor needs a Open type control valve. What I am looking to do is simply add a set of QD's to the tractor, which I can plug other hydraulics into (mainly a cylinder or motor) and operate from a control lever, and from the way I interpret the manual and diagram, all I really need to do is buy the hydraulic hose and QD's and a control valve, but what goes where is confusing me, as is the operation of the manifold control screw.
Any help greatly appreciated.