Cheapest way to add 3rd function hydraulics?

kmacht · Oct 10, 2017

I'm thinking of making a grapple bucket for my 63 ford 4000. It already has a front end loader running off a hydraulic pump on the front of the engine. What is the cheapest way to add a third valve? I would need it to run a double acting cylinder to lift and lower the upper part of the grapple. Can I somehow add onto the loader valve? What about tapping into the plate just in front of the seat? I have seen adaptor plates that go on there but don't know what I need beyond the plate.

Keith

TGP · Oct 10, 2017

If your loader valve is sectional spools with bolts holding the sections together, you might be able to add another spool section if you can identify the make. Or

You could swap out the valve for a three spool valve, or add a separate single valve and tie it into the plumbing.

The front Hyd. pump and system should be more than adequate
To do want you want.
Tom

BobReeves · Oct 10, 2017

Need to determine if your existing valve has a "Power Beyond" port, usually requires an adaptor from the valve manufacture. You can then add another valve in series with the existing valve. New valve does not have to be from the same manufacture.

old · Oct 10, 2017

If your valve body is like most you have 2 hoses/pipes going into and out of the valve body. You can simply pull one hose off and install another valve to it and then a pipe between the old valve body and new. Or buy a complete 3 spoon valve body

Sean in PA · Oct 10, 2017

(quoted from post at 12:12:30 10/10/17) If your valve body is like most you have 2 hoses/pipes going into and out of the valve body. You can simply pull one hose off and install another valve to it and then a pipe between the old valve body and new. Or buy a complete 3 spoon valve body

What old describes is a "poor man's power beyond", and it will work to a point, but you will find that operating both valves simultaneously will be lacking.

kmacht · Oct 10, 2017

I'll see if I can get some photos and specs of the current valve body. Tapping into the hoses coming into and out of it would be ideal. I don't have a need to run any of the three valves at the same time. Right now I can lift and curl the bucket but not at the same time. It would be fine if I could only operate the top grapple by itself. I envision being able to drive up to a pile of brush with the bucket and once the bottom edge is buried, close the top, and then lift the gripped pile up.

Keith

old · Oct 10, 2017

What I was/are trying to tell the guy to do is something I have done many many times. You add another spool right next to the one you have and it works just like the one you have because it has the open center. You have the pressure and return line and the new one sits in between one of those and works just like the one you already have

sunbeam · Oct 10, 2017

I'm sure it's an open center system just add another open center valve before or after the existing valves.

old · Oct 10, 2017

That is exactly what I have been saying but seem no one understands

Sean in PA · Oct 11, 2017

Old, putting two open center valves in series will work, but when the upstream valve is redirecting the flow to do work, the downstream valve will only get the fluid that's being pushed out of the opposite side of the cylinder that's being worked by the upstream valve, and it won't work as well during that time, and if you try to do work with the downstream valve at the same time you will wear out the seals in the upstream cylinder that much sooner as it is being used to transfer the power to the downstream valve where normally it is just pushing the fluid back to the sump. That is why they make power beyond valves. If there wasn't any issues with running two open center valves in series, they would have never invented power beyond.

Cheapest way to add 3rd function hydraulics?

kmacht

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TGP

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BobReeves

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old

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Sean in PA

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kmacht

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old

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sunbeam

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old

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Sean in PA

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