Hi all, got a issue with my kobelco sk75sr-3, basically the pump sounds like its cavitating on the boom up function. When in self diagnostics, the pump makes full pressure on all functions except boom up which tops out at 17mpa in h mode on full relief and when lifting a full bucket builds 17mpa then drops back to as low as 8mpa whilst still lifting before hitting relief. Machine also goes really slow when when using boom and arm functions at same time.
Did you get to the bottom of this ??
Yeah got it sorted now. Long story short, it got to point and arm stopped going out and would only come in. Ended up being the mechatro controller had been shorted and dumped all its info and went back to being a crane which is base software before they add the excavator software in.