Excavator CAT E365C E374D Main Hydraulic Pump Assembly
Part Numbers: 266-7952, 222-8349, 259-3782
Purchasing and Installation Guidelines
- Verify OEM part number compatibility, including regulator and servo valve assembly
- Require hydraulic bench test report for pressure, flow, and case drain leakage
- For remanufactured units, confirm replacement of pistons, cylinder block, valve plate, slippers, bearings, and all seals
- Inspect pump housing for pores and cracks upon arrival
- Protect ports to prevent contaminants from entering pump cavity
- Secure pump properly during transportation to avoid damage to input shaft and port threads
- Clean hydraulic tank and pipelines before installation
- Replace all hydraulic filters and bleed air from system
- Test pump pressure and flow after installation
- Check regulator response and inspect for abnormal noise, oil leakage, and engine bogging