Hydraulic tapping manifold and power beyond valves

Some of you may have caught the conversation Sean and I were having regarding the 5000 hydraulic system, specifically with regards to the use of the "tapping manifold" meant to power items such as external loader valves, without tying up the tractor remotes.

Today I received the official instructions from NH regarding the use of their manifold. As I suspected all along, the tapping manifold gets its oil straight from the pump (you can clearly see this in the drawing), meaning the factory remotes and 3-point hitch are all "downstream" from the manifold. This necessitates the use of a "power beyond" valve that would then be plumbed into said manifold and the tractor rear axle using 3 different lines. The instructions make it clear, shown in yellow highlight, that a power beyond valve is to be used.

No doubt many have got away with using a standard valve in an application like this, however every time you lift something heavy with the 3-point hitch, or deadhead the tractor remote(s), you are subjecting the exhaust core of your loader valve to pressures it was never designed to see. This may or may not be a problem down the road depending on how often you use downstream functions, and to what kinds of pressures they might see. The higher the pressure, and the more often it is done, makes it more likely that the valve will leak.

Let me know if anyone needs further clarification on this.

Bern, first let me thank you for this post – it has come at a time I really needed it. I’m going to pick the collective brain here with a little more need. I am working on a 3000 that has the manifold attached supplying a joystick valve for a front end loader. My need is adding a single spool valve to operate a hay rake. Is it possible to tap into the pressure line supplying the joystick valve to supply pressure to the single spool valve? Or do I need an additional manifold to supply the single spool? Thanks in advance to all for any and all help.

Order this kit and use longer bolts and mount on top of the divider block you have now. This will also take place of the block off plate you have now.
remote valve

You cannot tee into the pressure line of an existing valve in an open center system to supply another open center valve. Whenever you activate either valve, the oil will flow through the one with the least resistance (i.e. the one that is not being used). Nothing will work.

The valve hurleyjd showed in his post should work for you.

Bern, first let me thank you for this post it has come at a time I really needed it. I m going to pick the collective brain here with a little more need. I am working on a 3000 that has the manifold attached supplying a joystick valve for a front end loader.

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How many lines are going between the manifold and the joystick valve?

Like others, thanks very much for your post. A dozen or more years ago, I bought a Tisco adapter plate that was on a dealer’s markdown table. It had no directions so I wrote Tisco and got a single poorly-copied page. That page also clued me that this plate also has a PB port. I didn’t understand PB and didn’t want to accidentally deadhead or overpressure anything so I set it aside. Your clear post explains it all.

Thanks for posting that. I believe these were the same instructions Sean was looking for.

It says basically the same thing as the NH instructions do - that a power beyond valve is required for this installation.

My 2600 has the aluminum block and I have a joystick on my loader. The joystick has 2 lines and they go to the P port and the PB port. I can disconnect my loader and run my log splitter with the same lines. I can use my 3 point while using either attachment. I don't have a 3rd or return line.