Procurement Guidelines Verify the OEM part number to confirm the main hydraulic piston pump assembly fits CAT E365B, including the pump body, regulator, and servo valve components. New or remanufactured pumps must be accompanied by a hydraulic bench test report covering pressure, flow, case drain, and internal leakage. For remanufactured pumps, confirm the new replacement of pistons, cylinder block, valve plate, slippers, retainer plate, bearings, and all seals. Inspect the