I have a Komatsu PC56-7 that isn't performing most hydraulic functions. When requesting boom, stick, and bucket functions, the engine RPM's do not change, like it doesn't load the pump. Swing and track functions work. Blade goes up and down with no issues, but its on a separate valve. Being that it was never sold stateside, I cant find any information on it. Does anyone have access to a manuals for a similar machine, or a PC56-7 manual? Looking for some sort of direction or hydraulic schematic. Seems like a load sense problem
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