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Message: <blockquote data-quote="JustAwrench" data-source="post: 1113" data-attributes="member: 178"><p>Yeah-bobcat uses fixed displacement gear pumps for loader auxillliaries. Flow is directly related to engine rpm. Max pressure is limited by main and port reliefs so if the engine horsepower is available, even at reduced rpm, it will still build whatever pressure is needed to do the job. I'm not so sure that overpressure is harder on equipment than overflow, but pressure is always limited by system relief, and like amps in an electrical circuit, it's only going to build what the task requires. Flow is usually limited by max governed engine rpm but with the new hi-flows there is the possibility of overflowing the attachment. Overflowing is damaging for a number of reasons-heat buildup, cavitation, exceeding design limits of the rotation/reciprocation speeds of components, etc. So, in short and after much hot air, if you back off on the throttle, pressures are still available(as long as engine hp stays up), but things will slow down.</p></blockquote><p></p>