i want to say thank you for everyones input. i found out why it was overheating. when they did the loader install they unhooked the pressure line from the flow divider, the one betwwen the fuel tank and bellhousing. and run it directly to the loader then hooked the return line from the loader valve to the flow divider. Not a good thing as i have confirmed the loader valve is a closed center. now i just need to simply replumb it correctly and all should be good again. Once againg thanks for the input and getting me steered in the right direction.
87 case 245 ih overheating hydraulics
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Harry in Ky
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So what trick do you have in mind to make a closed center valve work by "simply replumbing"?
for starters there is an extra port used for the power steering on the flow divider, mine is manual steering so i have an extra pressure port. also one member suggested that there is a hyd port on the left under the seat where the factory hooked up there loaders. if neither of these prove to be viable options, then i will get a new open center valve for the loader.
J_J
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If your valve is not convertible to open center or closed center, using that CC valve in an open center system is not going to work as it will block the fluid flow.
If it is convertible, just get the PB sleeve or hex plug and convert it to open center.
The fluid has to flow through all valve with all valve levers in neutral.
If it is convertible, just get the PB sleeve or hex plug and convert it to open center.
The fluid has to flow through all valve with all valve levers in neutral.
ok, so i have solved this whole ordeal. i should have probly mentioned it is a joy stick valve body with dual valves. the control valves/joystick for the loader is open center, after unhooking the lines and using the trusty air blower to verify all of this. what had me believing that it was a cc valve was the plug inside the valve body it was located under an extra T port plug that redirected the flow through the relief then out. i removed the plug and now fluid flows through freely as it should unless i stroke a valve. Then it will relieve only when a cylinder is fully stroked, as it should. I feel like a real dummy now after fighting this thing. but the issue is solved the pump now runs nice and cool and all functions operate as they should. once again i apperciate everyones input. i will now inform the shop where i purchased the loader and had it installed to be aware of this plug. i dont know if they are aware of it or how many of these loaders they have put on in the past. maybe it will save someone some grief in the future. oh and just fyi it is a (bull dog 235) loader.
J_J
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What you said still does not make sense.
It appears that you are using the valve as open center valve with out PB.
You can use it in a fashion, but it is not logical nor correct.
What kind of sleeve or plug was in that port.
That port was probably a PB port but is only functional as a PB port if you install the sleeve or hex plug.
For open center operation, you need a PB sleeve or hex plugto send fluid to another valve.
Where is the fluid coming from that is now feeding the 3pt.
All OUT port fluid should be going to tank.
This is a PB sleeve.
Surplus Center - POWER BEYOND CARTRIDGE PRINCE LVR VALVE 660390008
It appears that you are using the valve as open center valve with out PB.
You can use it in a fashion, but it is not logical nor correct.
What kind of sleeve or plug was in that port.
That port was probably a PB port but is only functional as a PB port if you install the sleeve or hex plug.
For open center operation, you need a PB sleeve or hex plugto send fluid to another valve.
Where is the fluid coming from that is now feeding the 3pt.
All OUT port fluid should be going to tank.
This is a PB sleeve.
Surplus Center - POWER BEYOND CARTRIDGE PRINCE LVR VALVE 660390008
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i have the loader valve run in series. in neutral the fluid now flows straight through and i am using this to supply the 3 pt. now im not saying this is 100% correct but it works very well. as for the plug i removed it was a 1/2" orb plug. the plug was located underneath a plug on top of the loader valve. with this plug in place fluid had to pass through the pressure relief valve before it could pass over the valves and out to tank. this plug separated pressure and tank from what i could determine also once the cyl. are fully stroked and fluid is then deadheaded then i can adjust the relief pressure so not to blow the cyls. now the pump runs cool and all functions work great including the 3pt. a schematic of this valvebody would have made life easier. now my brush hog front seal is leaking. totally unrelated i know, but my luck anyways.
J_J
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If your valve is a Prince valve, read through the parts manual and it will tell you how to use the PB
port.
Page 9
http://www.princehyd.com/Portals/0/valves/LvManual.pdf
port.
Page 9
http://www.princehyd.com/Portals/0/valves/LvManual.pdf
my valve does not appear to be a prince, but i will investigate some more, there are no tags on it. i will check to see if it has a pb port in the morn, there is another plug on the body so if it is the pb port the i will replumb accordingly, as i want this thing to be right and to avoid any more issues in the future. once again thanks for the input.
