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John Deere 830

H

hillaagsa

Member
I recently got a Schwartz 1800 qt loader. I’m trying to hook it up to a John Deere 830. It has a Gresen 2712 V hydraulic pump. I haven’t been able to find any schematic or diagrams on how to hook one up thanks.
 
For one thing when I search for the .. Gresen 2712 V... pump it comes back showing results mostly for a valve. Is this what you mean? Secondly, is your 830 a 2 cylinder diesel farm tractor from the late 50s early 60s or the later model utility from the 70s as shown in the link?
JD 830 utility
 

Are you saying there is a separate pump that operates the loader and not the tractors own hydraulic system ?
While you likely have the US version of the tractor . There has been a few European 830s hauled by tractor jockeys from Canada to the US . Late versions of those 830s were built with the closed centre hydraulic system .
mvphoto64563.jpg


mvphoto64564.jpg
 
Does this valve in the linked picture look like yours? If so I can only direct you how to connect it to your tractor by using one set of your SCVs (selective control valve) or implement auxiliary remotes. The valve port the elbow you see facing you is the hydraulic return, likely marked ..OUT. There is another port directly across from it that cannot be seen that is the hydraulic supply to the valve, likely marked ..IN. These two ports need connected to one set of hydraulic remote outlets on the tractor. The original hydraulic lever (SCV) for those remotes will need to be placed in the position that gives flow and pressure to the IN port and possibly held there with a bungee while using the loader. The other ports coming out of the top of the valve go to the cylinders on you loader. The function pairs that connect to the same cylinder are in line above the valve spools ..part that slides in and out when lever is moved.. I don’t know if you can follow this by description. I have found a generic diagram I will add a link to In another reply. There may be a way to plumb this valve to your tractor without using auxiliary remotes, but someone more familiar with your tractor will need to explain that.
Hyd valve
 
Here is a generic diagram, the line shown coming out of the left of the valve to the pump is the ..IN.. port I referred to in the other post. The line coming out on the right going to the filter is the ..OUT.. port of the valve. In light of what Buick..Deere posted it may be a good idea to call a John Deere dealer with your serial number to find out if your tractor has ..open center.. or a ..closed center.. system. Actually your owners manual may have this information. The valve you use will need to match the system type, some valves are convertible by installing or removing an internal plug.
Generic loader valve diagram
 

Before anyone can correctly answer your question you need to reveal if this 830 has a 2 or 3 cyl engine. If 3 cyl engine was it built for European or N American sales.

Google search shows Gresen 2712 is a hyd control valve not a pump!!

Shown below is schematic for attaching ""hyd control valve"" on a 830 with 3 cyl engine built for N American sales which needs to be set up for open center hyd system.

mvphoto64567.gif
 
(quoted from post at 02:21:29 11/07/20) Does this valve in the linked picture look like yours? If so I can only direct you how to connect it to your tractor by using one set of your SCVs (selective control valve) or implement auxiliary remotes. The valve port the elbow you see facing you is the hydraulic return, likely marked ..OUT. There is another port directly across from it that cannot be seen that is the hydraulic supply to the valve, likely marked ..IN. These two ports need connected to one set of hydraulic remote outlets on the tractor. The original hydraulic lever (SCV) for those remotes will need to be placed in the position that gives flow and pressure to the IN port and possibly held there with a bungee while using the loader. The other ports coming out of the top of the valve go to the cylinders on you loader. The function pairs that connect to the same cylinder are in line above the valve spools ..part that slides in and out when lever is moved.. I don t know if you can follow this by description. I have found a generic diagram I will add a link to In another reply. There may be a way to plumb this valve to your tractor without using auxiliary remotes, but someone more familiar with your tractor will need to explain that.
Hyd valve
Click to expand...

Don't be giving bad advice to connect the loader hydraulics via the SCV.
This just ties up the SCV's and impairs the operation of the loader. No matter if it is open centre or closed centre.
 
Buickandeere, I try not to be snobbish or controversial
on here. I saw your post about the possibility of the
tractor being imported and took that in to account.
And if you read ALL my replies entirely you will see I
said that there may be a better way. Which TxJim has
provided information on. After that you poke your
head in and blast my offering, without any other
positive addition to the post. I am sure there are
1000s of loaders on tractors connected through the
SCV’s that saved the owners from hundreds of
thousands of hours of manual labor and their
operators were ever so thankful for this. I can see
why helpful folks on here suddenly disappear, in my
case my skin is much thicker than that. Have a nice
day!
 

Evidently JD engineers thought operating a farm use loader utilizing scv's was just fine because that option was listed in sales & parts catalogs. Utilizing scv's on new JD farm loaders was an option from the factory on many JD loaders.

Granted on JD 20-55 series utility tractors with closed center hyd systems returning hyd oil to ported hyd filter cover is the most ideal & most expensive option
 

Why not do it right instead of half @$$ed ?
Deere updated the utility tractor option list with a ported filter cover because using the SCVs works lousy for high flow loads . Plus it ties up the SCVs from other uses .
I should know after using both methods on the same tractor .
As for thick or thin skinned ? Something prodded you in a sensitive place to inspire your rant .
 
Thank you for the diagram and information provided. This
helps me get a better understanding on the project.
 

hillaagsa
Which model 830 do you have????????????

As I previously stated the model 830 OR type of hyd system that your tractor possesses must be known for anyone to correctly help you!!!!!!!!!!!
 
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