I have a 13 model bobcat s750, with around 2800 hrs on it. My model does have high flow. The problem started when we blew a hydraulic hoes that runs the cooling fan. The machine was ran out of fluid before we knew the line was blown. We got the machine back to our shop replaced the hose and serviced the hydronic system and since then the hydraulics have been weak. It will not pick up it's normal load. Everything is still operating as it should but hydraulics are slow and weak at an idle and increases with rpms. I have Noticed my problem more when I'm running my fecon Mulching head. But my problem exist on all my other Attachments. I know more than likely it's going to be my pump due to the lack of oil when hose burst. But with my Mulching head attached I'm able to get my hydraulic oil to 190° And the machine returns to working properly, strong hydraulics, fast response etc.. when oil temp falls below 190 it goes back to being weak/slow. I have tested my pressure with the gauge at the quick connects on the front of the skid steer with my standard flow at idle i'm getting 1800 psi and at full throttle I'm getting 3200 psi. When I switch over to high flow, I'm getting 4000 psi regardless engine RPM. I have a new belt on the hydraulic pump I have no codes in the dash And the machine has stayed and is update on its service. Steering as not been effected, only hydraulic lift arms and attachments I'm stumped.. please help.
