Need to add two rear remotes to a John Deere 5300

[MMalabama]

Sounds like you’ve got this figured out. You’ve managed to argue with every person offering help. Good luck

Gee Neumann, didn't know you were so sensitive.

 

[LouNY]

Anything can be done;
If the line from the pump to the block was redone to pass thru an SCV with the pump feed going in the pressure port and the power beyond going to the port on the tractor block, with an additional return to tank piped into the tractor chassis it would work fine.
It almost looks like your pressure relief is visible in the front of the block pictured.
I am assuming the desire is to use a valve from some place such as Burden Surplus instead of the expensive JD parts.
You might be surprised at JD pricing depending on your dealer;
John Deere Parts Catalog
There is also a thread on here about the installation of this with a pdf thats very informative, the tread title is LV100117 pdf

Also you could consider used, Wengers shows a used dual scv for $995
Dual Selective Control Valve Assembly - Hydraulic Systems - 54 - 54 - John Deere - Tractors

 

[MMalabama]

Anything can be done;
If the line from the pump to the block was redone to pass thru an SCV with the pump feed going in the pressure port and the power beyond going to the port on the tractor block, with an additional return to tank piped into the tractor chassis it would work fine.
It almost looks like your pressure relief is visible in the front of the block pictured.
I am assuming the desire is to use a valve from some place such as Burden Surplus instead of the expensive JD parts.
You might be surprised at JD pricing depending on your dealer;
John Deere Parts Catalog
There is also a thread on here about the installation of this with a pdf thats very informative, the tread title is LV100117 pdf

Also you could consider used, Wengers shows a used dual scv for $995
Dual Selective Control Valve Assembly - Hydraulic Systems - 54 - 54 - John Deere - Tractors

Yes thats it exactly, I agree I think it will work fine. My only concern was where to "T" the return/tank line from a new aftermarket valve back into the system, i suppose anywhere would work as long as it returned to the reservoir/tank. I will check out this catalog to see if i could find something maybe even used, ill google this LV number you have here.

 

[Rustyiron]

Back when I ordered my 5400, the dealer just "t'd" into the loader valve iirc. Not sure if that was a cost saving thing or just the way JD did it, but I remember having a conversation with him that we both didn't like the loader supply lines running under & over the rear axle.
Now this was back in about 1996 and seemed a non issue at the time so my memory of it is questionable and If your friend does not have a loader.......

 

[Tx Jim]

I think to install aftermarket scv & not do harm to tractor's hyd system one will need to acquire/install a PBY valve similar to photo below. After PBY valve has been installed one can plumb generic control valves.

 

[Tx Jim]

Back when I ordered my 5400, the dealer just "t'd" into the loader valve iirc..

One can't successfully "TEE" into a open center hyd system. Valves must be attached in series on OC system

 

[Rustyiron]

Like I said Jim, it was a long time ago and it worked fine so I did not have any personal interaction with it during my 12-15 years of ownership and don't remember the actual plumbing. I know it had the extra factory control levers and outlets/mounting but the actual plumbing I can't speak to. As far as I know that time was early in the now common "loader valve stays on the tractor" line of thinking and there was something funky about how JD "powered" the loader valve, I have a vague recollection that it was with rubber lines from the rear outlets.

 

[Leejohn]

I put on a backhoe hookup for a 5310 and have some info on the kit for that. You can see where the hoses go. The kit is NLA and I made up the hose and fitting. You can forget the BH hookup and put a valve in it's place.
If you aren't done with it I'll send you what I have. BTY the valve on the 5300 looks the same as the 5310. the 5310 is open center.