Hydraulic question

[PedeStablesEden]

Ok, I'm new here and i know it's been discussed at length. My tractor is not equipped with a P/B port on my loader valve. Obviously the right way would be to get the factory kit, but being a DIY guy, I'm trying to find a cheap alternative to do it myself. I've seen a lot of threads about this topic, but not one time have I seen this idea, and I know I'm not original in the thought. Maybe i missed the threads. But wouldn't this be a viable alternative? It's kind of t-ing into the system, but if you're using them independently/ not at the same time. I believe it can work. Looking for opinions before i put the time in to try it.

 

[ptsg]

Welcome to the forum.

That setup wouldn't work because the flow will just go to the path of least resistance. If you try to use the loader, the flow goes to the implement. If you use the implement, the flow goes to the loader.

You can't Tee pressure lines on an open center system. If your tractor is the MT225E you have list, then it will for sure have Power beyond on the loader valve.

What exactly are you trying to do? Adding remotes at the back?

 

[kennyd]

^^^^
Nope.
Cannot Tee pressure lines. Every valve has to be added in series, that way is parallel.

Literally HUNDREDS of threads in the hydraulics forum about this.

 

[Mrsig]

and enjoy the forum!

 

[PedeStablesEden]

I guess where I'm confused is, doesn't the loader only move if I pressurize the cylinders (move the loader lever)? So how does moving the teed in valve move the loader. I believe you guys, I would just like to know how. And I've looked at my loader valve, i can not find the PB port. I'm trying to run hydro lines to the front to run a hydraulic post pounder.

 

[ptsg]

On an open center system, when the levers of a valve in the neutral/center position, the flow goes passes through the valve, out the power beyond port to feed the rest of the circuit. If none of the valves ahead are used, the flow goes back to the tank/transmission.

With your idea of Tee the pressure line before the loader valve, if you tried to move the loader, since there would be resistance to the movement, the flow would simply follow the path of least resistance which would be the new valve you want to install.

Check your loader valve. You'll find 4 lines going to the cylinders, we don't need those for now. Then you'll find 3 lines going to the same valve. One is Pressure in, another is Power beyond (should stick out more because of the PB sleeve) and finally the tank line.

 

[PedeStablesEden]

The way i have it drawn is in series, not parallel look at the drawing, using A 4 port open center valve with the fluid out line feeding the FEL. The new valve will not have its own return line. As far as a PB port, i do not have one....yet. there is no rear remotes or third function on the tractor so there's no sleeve. Would the sleeve possibly go in where one of the Allen head black plugs go?

 

[Tinhack]

On a side note, check how much flow your hammer is going to need. You only have 7.9 gpm available.

Added: You have to have a return line on the new valve. Most hammers are cylinder driven. It won't return to hammer without evacuating the oil on the opposite side.

 

[ptsg]

The way i have it drawn is in series, not parallel look at the drawing, using A 4 port open center valve with the fluid out line feeding the FEL. The new valve will not have its own return line. As far as a PB port, i do not have one....yet. there is no rear remotes or third function on the tractor so there's no sleeve. Would the sleeve possibly go in where one of the Allen head black plugs go?

My bad on the Tee. For some reason, I kept seeing it as a Tee and not an actual valve.

As far as the power beyond on the loader valve, it has to have one as it will feed the 3 pt hitch even if there is no remotes on the tractor.

From the parts catalog. Here is the pressure line (#3) to the loader valve:

Here is the Power beyond line (#3) and note the power beyond sleeve sticking out on the side of the valve:

And finally the tank line (#17) that might be hard to see as it goes alongside the lines to the cylinders:

I will 100% suggest that you install the new valve after the loader valve (using the power beyond line), because depending on what valve you use, it may or may not have a relief valve and installing it after the loader valve, means you'll have the relief valve of the loader valve to protect the system.

Sorry for any confusion I may have created before.

 

[PedeStablesEden]

I will look again for the third line, as far as what valve, i found one that's for a log splitter, from my understanding, when it's pressurizing one port, it's returning through the other. More than likely I'm wrong and this won't work lol. If I can't do it that way, maybe a valve that has a relief and pb port. Then feed the fel off the pb port. My main goal is to install it before the fel valve as it'll be cleaner i think and less hoses which is less cost. Not sure if ANY of this makes sense lol. Just trying to think of the cheapest fastest way for those who can't spend a grand putting a 3rd function on.