JCB 212S Hydraulic issue

Hello everyone. I have a hydraulic problem on a JCB 212 S back hoe. When using hydraulic levers hydraulics initially work then stop completely. If operator slowly opens hydraulic levers it works but when opened fully it completely stops. Original thought was maybe pressure relief problem but I see all spools in there respective control valves have their own relief valves and since all functions have the problem I ruled that out. I want to check pump pressure. Can anyone tell me where to...

JCB 212S Hydraulic issue

JCB 212S Hydraulic issue