Hello, I'm new to working on hydraulic in general. Finally got a mini excavator for my property. IM trying figure out why the max pressure on the blade/cab spin circuit is low pressure, max is saw was 1100psi. I don't believe the 2 spool control for this circuit is oem. On the pressure relief ive maxed out the spring, I've disassembled, cleaned and inspected it. No change. Any help would be appreciated. Pictures attached.
Ok, i figured it all out, there was a block with two adjustable relief valves. I adjusted them to close to the shop manual spec and now the machine functions as it should.