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Message: <blockquote data-quote="thetool" data-source="post: 25251" data-attributes="member: 1534">I guess I sorta left folks hanging, sorry.....=).On hi-flows, you basically have a gear pump with an extra section, which when activated electrically, tees into aux flow out of the coupler.  On large frames, the solenoid valve is on the pump, and on medium frames, there is a separate manifold with a solenoid-valve.<img src="http://i295.photobucket.com/albums/mm136/tooleeo/DSC_2419.jpg?t=1242067642" alt="DSC_2419.jpg t300 gear pump picture by tooleeo" class="fr-fic fr-dii fr-draggable " style="" />This is the standard flow gear pump, from the right side of the machine with the track and drive sprocket removed.  Attached to the backside of the pump(left) is the power bob-tach valve, and right close behind that is the A/C compressor.  It's all very tight and stuff has to be removed to work down to the pump.  The whole job is basically a bunch of separate R&R tasks.....=).<img src="http://i295.photobucket.com/albums/mm136/tooleeo/DSC_2442.jpg?t=1242067862" alt="DSC_2442.jpg t300 gear pump2 picture by tooleeo" class="fr-fic fr-dii fr-draggable " style="width: 319px; height: 212px" />Left is the new hi-flow pump, right is the standard flow pump, on the ground.<img src="http://i295.photobucket.com/albums/mm136/tooleeo/DSC_2487.jpg?t=1242067942" alt="DSC_2487.jpg t300 hi flow conv3 picture by tooleeo" class="fr-fic fr-dii fr-draggable " style="width: 319px; height: 212px" />The most difficult part of the job for me was how to get the tubelines swapped out without pulling the engine/pumps or splitting the machine.  Quite a bit of assembly removal to get to it, and I still had to cut the old tubeline up to get it out.  The new one is in two peices to accomadate the tee-in and is a snap to install.So basically, it's just a bunch of R&R, getting the correct parts in to make it a factory high-flow machine.  It took a bit of time, but a lot of that time was geared toward documenting the procedure, along the lines of cutting labor time it I ever get to do this again, making sure all the correct parts are on-hand when I start, etc.It's pricey, but of course a guy can try and sell the old pump, maybe the oil cooler, which was also replaced, and recover some cost that way.  Dollar wise, to convert to hi-flow is not much more than the dollars a guy would spend to enclose and HVAC the cab.  Kits exist for that, why not Hi-flow?  I dunno, it was a challenge and I accepted it, and the job was fun.......reason in itself, sometimes......=).</blockquote>

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