Posted by IH fan on August 06, 2010 at 13:39:05 from (76.92.124.221):
In Reply to: Char Lynn on 400 posted by Bernie Steff on August 05, 2010 at 18:42:23:
Another good thing about the PFDV is the priority flow and steering do not change as the engine speed varies. If the priority is 4 or 5 gpm (guessing that's about what the PS will need), as long as the pump is putting out that much or more, that's what the PS gets.
I have one on my 240U and at an idle, I loose the 3 point, but still have steering. I have thought about plumbing it into my loader pump because it's bigger, but not sure the PFDV will handle the full flow when the engine is reved up. From experience working 25 years in the engineering lab of a hydraulics company, I know that a PFDV can be overloaded with flow and not respond as it should. It needs to be able to handle the full flow when the engine is at full rpm, and anything less than that will be okay.
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