And so, the saga continues… It was time for another visit to the Manitou. This machine was taking up more and more time and, at this stage, we had little to show for it. Let me quickly recap from our previous visits: We knew that the pump could create 250 bar of pressure with 70 lpm before the valve block. We had captured the fault and believed we had a flow issue. The pressure created due to the resistance to flow was also much lower than that of a known good machine. To try and get ahead of the problem, we acquired an outlet slice which contained the relief valve that sets the working pressure of the machine. We also knew that flow was the underlying problem for this machine and that trying to establish where the oil was going would not be an easy task.