Need help plumbing FEL to New Holland TZ25DA

seelbo · May 20, 2015

Hello all, I am a newbie to the hydraulics area of tractors and I could use some advice. I have a New Holland TZ25DA without any additional hydraulics installed beyond the 3 point hitch valve. I recently acquired an old FEL off of a Farmall C tractor. This was operated using a belt driven pump and a tank mounted to the loader frame running into a "FPA" valve that has an "IN" and an "OUT" port that were plumbed to the pump and tank respectively. There are 4 ports on top of the valve that are attached to the loader pistons. I have eliminated the pump and tank from the loader, fabricated mounts, and have the loader installed on my tractor. Now want to plumb the loader valve to my tractor's built in pump. I have read as much as I can find on my tractor's built in hydraulic ports and I know I have a "Power Beyond" and a "Pressure" located on the 3 point hitch valve and a "Tank" port located on the transmission. I have looked at the factory loader and a couple aftermarket loaders and they utilize all three of these ports with their loaders (they have a joystick type valve) but I don't think my loader's valve can do this because I have no third port available. So short of buying a different valve how should the lines be run? I think that I can just run a line from the "Power Beyond" to the "IN" on my valve and a line from the "OUT" on my valve to the "Tank" port and not use the "Pressure" port. Does this sound right? I have included a rough drawing of what I have to work with.
Thank you in advance!

J_J · May 20, 2015

In the logical flow of things, your tractor only came with the 3pt hyd.

All valves in an open center hyd system should be in series.

To add additional valves, you should use valves with the PB with adapter option, connecting the PB to the next valve and so forth.

You can take a chance if you want by running the pump flow into the FEL valve, and the OUT to the 3pt input.

Most valves are designed for the OUT port to go directly to tank.

Does your FEL valve have a relief valve on it, and if so, set it to your tractor relief setting.

seelbo · May 20, 2015

JJ, so if I had a loader valve with a PB port on it (this one I have does not) then I would go PB to PB, then pressure to IN and OUT to tank? I only have a little over $200 in this so far so I'd rather buy a new valve then damage my tractor. The valve I have does have a relief valve next to the handles. Sorry, I'm probably making this harder than it is.

J_J · May 20, 2015

Here are two joystick valves at a reasonable price.

First valve has float and regen.

2 SPOOL COMPACT 10 GPM JOYSTICK CONTROL VALVE

2 SPOOL 10 GPM WALVOIL SDM102 JOYSTICK LOADER VALVE

seelbo · May 20, 2015

Thanks JJ. Once I have one of those valves, Tank to Tank, Power beyond on 3 pt valve to In on FEL valve, and Power beyond on FEL valve to 3 pt pressure?