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Hydraulic spool valve help |
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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Posted: 17 Jan 2021 at 3:50pm |
I have a D15 commercial with a loader. the spool valve is broken and not repairable. It has a port on the back of the valve that fits over a pipe that sticks out of the reservoir (the loader support) and is sealed by a rubber washer when the valve is bolted up. I could not find a replacement valve the same. Is this a return, or some kind of pressure relief? Is seems I can just plumb the valve without this and block off the pipe sticking out of the reservoir.
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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Here is the front of the valve
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Jim.ME
Orange Level Joined: 19 Nov 2016 Location: Maine Points: 950 |
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Without seeing your valve and figuring out just how it is ported to be certain, I will guess that port into the reservoir, which the valve slides over, is the oil return for the system. You should have a supply line coming from the pump and you need a return to reservoir. If it doesn't have a dedicated return hose, between the valve and reservoir, that port is the system return point.
You will need to make a mounting bracket for the valve and since the new valve will most likely have a port for a return hose, you will need to have a place to connect that return hose to the reservoir. You could modify that port to accept a hose or make another port and plug that one.
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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The original valve does have a return port.
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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Thank you for helping.
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Jim.ME
Orange Level Joined: 19 Nov 2016 Location: Maine Points: 950 |
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Since your existing valve already has a separate return hose you can use that for the return from the new valve and plug the port, shown in your pictures under the old valve.
You didn't say, and I didn't ask, but is this just a loader tractor or does it have a backhoe on it as well? That could make a difference if there is a power beyond set up. Edited by Jim.ME - 19 Jan 2021 at 5:25am |
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Ken stanwood
Bronze Level Joined: 06 May 2012 Location: Stanwood WA Points: 38 |
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I think it may have had a hoe on back in a different life but not now.
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Coke-in-MN
Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41563 |
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Is it a open center valve body with that being the return line back for flow when NO supply is needed to cylinders ?
A valve body with how many outlet ports ? Big thing is getting a valve body rated for the pump capacity along with if oil is ported so as to have regenerative circuit within . AC used a retentive system where oil from one movement of cylinders flowed into opposite end of cylinder when designing their backhoe operation. |
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