K7V280 CAT E395 E395GC Excavator Main Hydraulic Piston Pump for 584-0380 627-1304
Procurement Guidelines
Verify OEM part number to confirm the main hydraulic piston pump assembly fits, including the pump body, regulator, and servo valve components.
New or remanufactured pumps must provide a hydraulic bench test report covering pressure, flow, case drain, and internal leakage.
For remanufactured pumps, confirm new replacement of pistons, cylinder block, valve plate, slippers, retainer plate, bearings, and all seals.
Inspect the pump housing for cracks and sand holes upon arrival. Keep port threads intact and seal ports to prevent contaminants.
Secure the pump during transportation to avoid impact damage to the input shaft, ports, and precision valve parts.
Clean the hydraulic tank and pipelines before installation, replace all hydraulic filters, and bleed air from the hydraulic system.
Test pump pressure, flow, and regulator response after installation. Check for abnormal noise, overheating, oil leakage, engine bogging, and weak operation.