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7710 loader plumbing


 
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MNfarmer
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PostPosted: Tue Jan 09, 2018 3:51 am    Post subject: 7710 loader plumbing Reply to specific post Reply with quote

I've been reading through old posts about
how to plumb in a joystick loader valve on
a 7710 series 2 Ford and I'm having
trouble finding a gresen v20ls which was
mentioned as the correct valve to use.
Can someone point me in the right
direction?? Thanks
 
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Bern
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PostPosted: Tue Jan 09, 2018 5:27 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

It doesn't have to be a Gresen V20LS, that's simply the valve I used 20 plus years ago when I did that same job. Just call your local hydraulic shop and tell them you need a 2-spool, 20 GPM closed center load sensing valve. You'll also want a float section for the loader lift spool.
 
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TinCan
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PostPosted: Tue Jan 09, 2018 7:22 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

CVPost-Bern wrote:
(quoted from post at 06:27:52 01/09/1Cool You'll also want a float section for the loader lift spool.



What is that, and what does it do?

I am looking at parts (control valve) I need to get for my loader.

Thanks, Pat
 
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Bern
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PostPosted: Tue Jan 09, 2018 8:46 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

A float spool is one with 4 distinct positions, unlike the 3 spool typically has. Most spools have a lower-neutral-raise position. A float spool has float-lower-neutral-raise. The float position allows the loader arms to follow the contour of the ground, and is usually detented. It is not mandatory.
 
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MNfarmer
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PostPosted: Tue Jan 09, 2018 11:05 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

Thanks Bern!
 
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TinCan
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PostPosted: Tue Jan 09, 2018 11:19 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

CVPost-Bern wrote:
(quoted from post at 09:46:13 01/09/1Cool A float spool is one with 4 distinct positions, unlike the 3 spool typically has. Most spools have a lower-neutral-raise position. A float spool has float-lower-neutral-raise. The float position allows the loader arms to follow the contour of the ground, and is usually detented. It is not mandatory.



Ok, you mean like a draft on the 3-point.

Thanks, Pat
 
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Bern
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PostPosted: Tue Jan 09, 2018 12:24 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

No, I would not equate that to a 3-point hitch at all. A 3-point cylinder is single acting, whereas your loader cylinders are double acting. Float position simply means that the oil in a double acting cylinder can exit or transfer between both sides of a piston at will.

Imagine taking a cylinder with no hoses attached and pulling the rod in and out with your hand. That would be "float action".
 
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David G
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PostPosted: Tue Jan 09, 2018 3:07 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

I did that on my 6610.

You need a CCLS valve, tee into the line that goes to the SCV for supply, and tee into the sense line with shuttle T
 
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MNfarmer
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PostPosted: Tue Jan 09, 2018 4:12 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

Is this the correct line to T into for the supply?

 
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TinCan
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PostPosted: Tue Jan 09, 2018 4:21 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote


What I meant was, that it followed the ground, moving up & down, and not rigid. Not as to what the insides do.

Pat
 
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Bern
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PostPosted: Tue Jan 09, 2018 8:28 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

Yes
 
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Tx Jim
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PostPosted: Wed Jan 10, 2018 4:12 am    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

TinCan wrote:
(quoted from post at 14:19:33 01/09/1Cool


Ok, you mean like a draft on the 3-point.
Thanks, Pat


Draft on 3 pt is load sensing causing 3 pt hitch to raise/lower due to amount pulling pressure exerted on 3 pt. Nearly all tractor models have a 3 pt that can float.

As Bern stated float position on loader valve allows boom cylinders to move in/out to follow ground contour.
 
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MNfarmer
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PostPosted: Thu Jan 11, 2018 6:00 pm    Post subject: Re: 7710 loader plumbing Reply to specific post Reply with quote

Ok thanks. Where does the shuttle T get plumbed in that I've read about and also the load sensing line?
 
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