I assume you have a joystick or a two spool valve plumbed into the hydraulic pump for the loader. Look by the quadrant (rear lift handle) for a block off plate. IH has an open center system and this plate has bypass ports to circulate fluid (I think).
Here is my system after I re-worked the hydraulic valves.
This is with the quadrant cover removed and fender off, see the plate with a bulge, this is the bypass plate.
This is with the quadrant cover installed.
This is the rear remote ports. I got a pair of Safeway's at a local dealer. These people have the breakaway bracket, http://www.dultmeier.com/manufacturers/pioneer-coupling.asp
Good luck and post a pic of your setup, we can help. If the 484 uses the same valves, I have two valves and a end plate available with new o-rings.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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