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Message: <blockquote data-quote="Tazza" data-source="post: 36728" data-attributes="member: 82">Sadly it does sound like a pump issue, hopefully its just air. For a small hose i can't see there being any issues though.As you said it was a gradual decline, it sounds more and more like the pump. A good test would be a pressure gauge on your aux hydraulic couplings. Even if you remove a line to your grapple bucket and install a pressure gauge, 3,500 PSI should be enough. Run the machine at idle and operate the aux hydraulics to that line, see what the gauge reads, i should be in the high 2,000 PSI range. Throttle up and see if it changes. If it does, it seems like it could be the pump. You need more speed to get the pressure up if there is wear in the pump.Its somewhere to start.If the pressure does not change, its more likely its trash in the relief valve.</blockquote>