You will need either a separate belt driven pump, or to use the existing system, you will need a "priority flow divider valve". To use the PFDV, which is the most common and easiest way to go, you would plumb it in the pressure line coming out of the pump, with the "priority out" going to the steering and "secondary out" to the existing system. What this does is assure that even when idled down, you do not loose your power steering. It can however rob enough flow from the rest of the system that when idled down, your 3 point or fast hitch will operate slow, or not at all. My 240U will loose flow to the 3 point unless I am at about 1/3 throttle or higher.
I have seen PFDVs at TSC and you will need one sized to your system with probably about 3.5 - 5 gpm to the priority port.
This post was edited by IH fan at 10:12:13 08/11/10.
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