L-series Solenoid hydraulics: who has this?

[huibert]

My tractor contains a elektrical switch-operated 3point hitch. Since I want to add an auxilary device I would like to know how to connect it. Unfortunately I can not find any reference to the used Yuken-labeled parts. They are by far default and do not appear in regular manuals of any L-series Kubota/Zennoh..

Yuken, on my request, is looking for it, but they have not responded since weeks now.

Here is a picture, if anyone could help me for some tech specs...
-Regards, Huibert.

 

[fast*st]

Seems like it'd be straightforward, you have a hardline going to a fitting near the valve or does that go to the valve? Looks like the rubber line is the drain and then you have the vent on the other side. The hardline might be supply, the first step is figuring out the fluid flow path. Worked on a JD where they supplied a different hardline that became a power beyond setup. Having your flow schematic would be helpful

 

[huibert]

Originally a L175/L185/L225/L235 has two places where you get pressure,
One, Flange typed, is at the side of the tractor for which there is an example
somewhere in this forum. I guess that is an A and B line for e.g. a cylinder.
The manual gives the other: Boss Type:

But not easily reachable at my tractor..
The indicated front screw is missing, anyone to know if
the screw pointing down-left, just behind the front screw
can be used as well? Or is it a relief valve? This is how it looks:

The descriptive text says you can attach without a control valve, but
how does the fluid then get returned from the cylinder to the tank?
The cylinder I would like to use has two hoses attached.

Return (T, Tank) is no problem.
Flow schematic is the problem, I do not know how the solenoid is connected
or how it is operating. I guess I'll have to disassemble it completely.

 

[Doodlebug]

Have the same setup on my tractor did you have any luck with how it works, just need a wiring diagram of the switches and solenoids for it. As it never was used by old owner and he does not know how it worked