Hydraulic System138Service Manual – Advance 7765 / Nilfisk CR1500Component LocationsThe following components are included in this section:•Hydraulic Pumps•Hydraulic Reservoir•Oil Filter•Oil Cooler•Main Control Valve•Cylinder Control Valve•Return Block/ManifoldTheDrive PumpandAuxiliary Pumpare mounted on the rear of theengine (toward the front of themachine) and are driven by theengine crankshaft.DrivePumpAuxiliaryPump