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Implement Alley Discussion Forum

Hydraulic plumbing questions.

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JayWalt

09-10-2006 20:24:42




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Ok guys. I got an IH 300U with a loader and a hydraulic fast hitch. Currently the front valve is hooked to the lift cylinders on the loader. Now I want to share the rear valve which was originally used for the hitch for both the hitch and the dump bucket. Is it possible to use just one selector vavle and only control one side of the cylinders. The other side would be tee'd. I say this because i got a new selector valve nearly free. if i could find another one cheap, i would switch both. Now the only thing i see a problerm with is that the switched side would not be able to act because the oppoiste side of the cylinder would be blocked from returning to the resevoir. The system is only 1350psi, and all components are rated for more then that, so I dont see why it would be a problem. The cylinder with blocked return port just wouldnt move. Am I totally wrong and is this not going to work? I really dont want to buy a whole new valve for the tractor, and a new selector valve aint cheap either.
I dont see me using the hitch much, but man if i did, its going to suck not having hydraulics hooked up for it.
Oh, I also dont care what movements the other component makes, as I will just raise the loader arm when using the hitch, and the hitch doesnt hit the ground or come close when it moves.

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JayWalt

09-11-2006 21:11:41




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 Re: Hydraulic plumbing questions. in reply to JayWalt, 09-10-2006 20:24:42  
Paul:
I got the one selector valve at Tractor supply on clearance, originally $60, for $11.44. They had no more. Technology is cool. They foound another one for me today about 2 hours away and are shipping it to my local TSC. So for $23 and a few hoses (which i can get for free), I can now fully switch the cylinders, and save myself over $150 on a vavle to fit the tractor. Its cool cause i can stack them and make a piece of steel to actuate them both simultaneously.
I'm 99% sure one would work, but it would be nice to keep them totally isolated.

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Michael Price

09-10-2006 21:30:33




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 Re: Hydraulic plumbing questions. in reply to JayWalt, 09-10-2006 20:24:42  
Ive seen people try this stuff before and from my experience its best to do it right the first time. It may take a few years but you will be glad you did. Those valves are cheap so tee into the hydraulics before the valves and just add another one in. Im sure you can find used valves on ebay cheap. If you want some help feel free to email me.



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JayWalt

09-10-2006 20:51:14




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 Re: Hydraulic plumbing questions. in reply to JayWalt, 09-10-2006 20:24:42  
I do understand your concerns for my saftey. But let me go over this. The lift cylinders are on their own valve, the arms will be up no matter what you are doing if you are moving the tractor, plowing, whatever (unlss you are scraping the ground with the bucket, but that doesnt matter cause ull be using the vavle for the power dump). So the bucket is free to do whatever it wants. As with the hitch, if there is no implements on it, i dont care if it goes up and down, my focus will be on using the dump then. I do understand what you are saying. I plan to look for another selector valve so i can switch both side of the cylinders. I dont see why you would need the tractor off, the selector valve(s) will be after the cylinder valves.

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paul

09-11-2006 10:31:05




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 Re: Hydraulic plumbing questions. in reply to JayWalt, 09-10-2006 20:51:14  
If you are using proper selector valves that is cool. I was using just any old valve in my example, & changing them would drop the loader badly under the wrong conditions.... Trying to keep you - and others - safe.

Allowing the rear hitch & the loader plumbed together at the same time will not be pleasant. It does _not_ give the 'unconcerned about' effects you think it will. It will be a major pain.

IMHO. :)

Sounds like you will try it. Report back in a few months and let us know how it worked out. :)

--->Paul

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paul

09-10-2006 20:33:57




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 Re: Hydraulic plumbing questions. in reply to JayWalt, 09-10-2006 20:24:42  
I'm not totally following, but you can't Tee open center hydraulics like that - you _should_ be concerned about the other components moving - you are dealing with a loader, do you want it to crash down or dump the load unexpectedly? It does not work even close to good enough to just tee the ports.....

The only way you can Tee the plumbing is to put valves all over, & turn off the rear remotes entirely & open the front totally. Or the other way around. No mixing/matching. Then only one setup is working, not the other at all so it really is not Teed in use. Only change things with the loader on the ground, motor off. Seems kinda dangerous if you forget that last sentence. You would need 4 valves that can handle 2000psi, not just water valves.

Is that what you meant? Or am I too numb this evening & totally missed your point? :)

--->Paul

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