IH 684 Loader Plumbing

If I've read all the posts correctly, based on the two pics, do I have my loader plumbing correct? If not, what do I need to change. Power beyond isn't an option at this point. Need the tractor for haying in a week and the parts I have took forever to get here.

The line on the valve under the seat is going to be my inlet for my loader valve, the return is going to the plug down by the axle. I took off the line that comes from the valve under the seat that went to my far right rear remote. I put a plug on the fitting that comes off the back of my last rear remote valve.

That might work but the plug to to left of the remote valves in the pic is the power beyond and shouldve hook there.
The return should go into bottom of rear below the axle housing

Hi, I believe you are plugging the wrong end. I believe the hydraulic oil flow is from the remote valves to that valve under the seat.
I think the high pressure side is from: I took off the line that comes from the valve under the seat that went to my far right rear remote and the return is where you have the new line attached.
My brother has an IH 474 (same setup as your 684) that he bought used from a retired farmer and it had a loader on it at one time and the way the previous owner had the the loader connected was they had removed the steel line that went to the valve under the seat to down under the remote valve and had connected the Input of the loader valves to the the port where the steel line was connected to the remote valve and the Output of the loader valves was connected to the valve under the seat where you have the new line attached. If you start the tractor and hear the hydraulic relief valve squealing then you have the loader connected wrong and shut the tractor OFF.
You maybe able to cap off the valve under the seat and connect the Output of the loader valves to the drain plug under the right rear axle but not 100% sure.
PS, are aware you can use a shopvac on the hydraulic filler hole while removing the drain plug under the rear axle and not loose much hydraulic oil.
On the later 685/695/4210 series tractors, they have a built in power beyond line and you use the drain plug under the right axle for a return.
If you remove the loader valves for any reason, you will have to connected the Input and Output lines that went to the loader valve together or the hydraulic pump will be dead heading.

So I can reinstall the metal line, hook the supply line to that plug on the left of the remote valves and I'm all set?

The return line is plumbed to rear below the axle housing, just not shown in the pic.

Yes, thats the power beyond port. I have a 574 with loader valve running off that port

I assumed that my endplate was not a power beyond plate. How can I tell that that is the correct end plate?

I assumed that my endplate was not a power beyond plate. How can I tell that that is the correct end plate?

JimB2: You're saying I need to switch where I added the cap and where the new hose is connected? Put the cap where the hose is and connect the hose to where the cap is in the pic?

If it has the plug it should be power beyond. The block off plates didnt have the plug.

Hi, see my post on Redpower of photos and part numbers of the Power Beyond plates that work and don't work. They can look the same but don't work.

Re, your photos and connections, from experience on my brother's 474, I would say you have capped off the wrong end of the steel line that went from the Remote to the Unloading/Flow control valve under the seat. You can try capping the port on the Unloading/Flow control valve under the seat and returning to the drain plug under the right axle but if that messes up the hydraulic system then connect return to the port on the Unloading/Flow control valve.

But if your Power Beyond plate is the correct part number for it to work a loader then that would be the recommended method.
PS, isn't it fun accessing that hydraulic connection at the rear of the remote!!!

The end cap plate you have on the rearremote valves is a power beyond plate. My 674 loader joystick receives it's pressure source from the plug pictured in that plate and the return line goes to a fitting that is swapped out with another plug down on the side of the rear right axle for the return connection. A plate on the end of the valves without a port on it is not a power beyond plate. I also think if I'm understanding correctly that you've capped off the wrong line going to the rear for the current plan on the return line.

JimB2, so what did I miss on this pic from an earlier post? I was going for option #2. Isn't #34 the unloading/flow control valve under the seat? Where is tube #39 then?

Option #2 was for 85,95,32xx,42xx tractors that were EU, Canadian and after the IH Louisville, KY assembly closed. I didnt discover until some time after I posted that reply that Louisville, KY tractors had different hydraulic configuration.
For the Louisville, KY, assembled tractors you had to use option #1 but some tractors had the Power Beyond that you just took the plug out and connected loader hose and good to go others had the plug but wouldnt work with loader. A few years ago another Poster discovered that problem and that is when we discovered the different part numbers and the site that advertised the correct ones.

But by removing the steel line from Remote valve to the valve under the seat and connecting the Input of loader valve to the where the steel line was removed from the Remote valve and Output of loader valve to the Input of valve under the seat should work as well as that was how my brothers 474 was connected. Also I believe the valve under the seat can be capped and Output of loader valve connected to drain under the right rear axle.

The picture is hard to see all of what was done. I think you just disconnected the line to your remote valve so it will no longer work. I believe those 2 lines at the back end of the remote valves are either the return or the supply side of the valve. Those valves are not supplied by the side of the housing internally like the the Other valves used on some of those tractors. And yes there are 2 different valves with completely different part numbers and set up. One type is just the same as most valves on the row crop models and the other is a totally different valve. I've not had a good chance to look at both just read in one of the books we have about them. I would take the plug out of the end and put the line on there with a gauge and start it to see if you get pressure in the 2000-2500 range if you do then use that for your loader. this would also let you use the remotes when the loader is on the tractor as well. You could have liver hydraulics to both front loader and remotes at the same time that way. Then you could use the same place you are now for your return line. Your return should be bigger than the pressure line by about a size. If pressure is half inch then return should be 3/4. even the fitting going into the case should be.

Caterpillar guy, you are correct about the two different styles of valves. The 74 series used valves and plates that were held on with 3 bolts, and somewhere either late in the 74 series or early in the 84 series IH went with 4-bolt valves. The block off plates on the 4-bolt valves did have a plug on them, not sure what it was for, since if you try to plumb into that plug nothing will work from it. They made a separate power beyond plate for that valve. I have 2 684s and an 884 and have 2250 loaders for all three. The 884 and one of the 684s have power beyond plates, the other 684 operates off the rear remote. At some point after the 84 series Case IH went back to a 3-bolt valve for the 85 series, but I don't know if the later 3-bolt valves were the same as the earlier ones from the 74 series.

Hi All,
I am going through the same process as the op plumbing loader onto my IH 684 tractor. I have done as suggested above by taking out the power beyond plug and plumbing from it to the side marked "in" on the loader valve bank and then plumbed the outlet down into the hole below the axle. I am getting some flow out of the power beyond but not enough psi to even move my gauge. Whats wrong?
I have tested pressure at the remote port and it has around 2400psi. Why the weak power beyond?

Thanks

Hi, if you 684 has the same 4 Bolt hydraulic valves as in the photos above then you have you have a 684 that was shipped in a crate from IH Doncaster, UK plant to IH Louisville, KY, USA plant and final assembly complete there using IH USA parts for the hydraulics, electrics and steering.
The only method to make the loader work properly is to put a proper power beyond plate on the end of the valve stack.

See this post: https://forums.yesterdaystractors.com/threads/ih-484-loader-tractor.1696637/ about the same problem on an IH 484 that was assembled in Louisville, KY. The post gives a link to a supplier of used power beyond end plates.

JimB2 said:

Hi, if you 684 has the same 4 Bolt hydraulic valves as in the photos above then you have you have a 684 that was shipped in a crate from IH Doncaster, UK plant to IH Louisville, KY, USA plant and final assembly complete there using IH USA parts for the hydraulics, electrics and steering.
The only method to make the loader work properly is to put a proper power beyond plate on the end of the valve stack.

See this post: https://forums.yesterdaystractors.com/threads/ih-484-loader-tractor.1696637/ about the same problem on an IH 484 that was assembled in Louisville, KY. The post gives a link to a supplier of used power beyond end plates.

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Thanks for the reply JimB2. I though my tractor was completely built and assembled in Doncaster but not sure. It says build at Doncaster on the plate. Pretty sure mine has Lucas electrics.
My remote valve area looks identical to Rhomiums in his pictures at the start of this thread. I understood from reading above that he needed to tap into the silver/grey plug on the far picture left side of the valve stack. I have that same plug but mine produces very low flow and no pressure at all. What am i missing? Do i need a special power beyond sleeve to go in this plugs place?
Thanks

Hi, I have to apologize for the original post that I made several years ago about the loader connection for 74/84 series tractors as I did not realise at the time that IH Louisville had installed the USA 4 bolt valves on the Doncaster crate units.
I am no expert on the USA remote hydraulic valves but I do believe the Pipe plug on top was used in the machining of the end plate and by connecting a hydraulic hose to it you are basically creating a T-connection into the high pressure return line therefore you only get partial pressure.

I suggest you contact this company like the Member with the 484 did.

This a photo from their website of power beyond end plates, you can see that the two outer holes are plugged and that forces the high pressure return oil to go out the where the pipe plug is on the plate.
I few years ago a member with a lathe made similar plugs for his regular end plate converting it to a power beyond plate but it requires machine skills especially for the O-ring to fit correctly.
BTW my brother has 5 IH Doncaster, UK built tractors including about a 1982 built 684 and it has the 3 bolt remote valves on it. All the IH Doncaster tractors we receive here in Canada come directly from Doncaster and they are similar to the European models except for specific Canadian requirements, one being the head lights at the top of the grill instead of lower like the Euro models.

Good Luck
Jim

Westcoast said:

Thanks for the reply JimB2. I though my tractor was completely built and assembled in Doncaster but not sure. It says build at Doncaster on the plate. Pretty sure mine has Lucas electrics.
My remote valve area looks identical to Rhomiums in his pictures at the start of this thread. I understood from reading above that he needed to tap into the silver/grey plug on the far picture left side of the valve stack. I have that same plug but mine produces very low flow and no pressure at all. What am i missing? Do i need a special power beyond sleeve to go in this plugs place?
Thanks

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I have the plate in hand mentioned by Jim above (the one pictured on the left with the plug in the top hole). I have also found one on Ebay that is in route to me (it is being sent in from Israel) that is like the one in the picture on the right. It was cheap on Ebay but I believe it was listed with the incorrect part number on it. Figured I would try it and see which fits best for me. I plan on replacing my loader hoses as they are all aged and cracking.

Either should work, but the one on the right has the best angle to mount a supply hose to the loader valve for me.