Caterpillar 267-2755 Hydraulic Pump | Piston Pump for 420E 430E 432E 442E

The 267-2755 (2672755) axial piston pump from Chengyuan Hydraulic is a high-performance variable displacement unit specifically engineered for Caterpillar (CAT) E-Series Backhoe Loaders. Fully compatible with original CAT specifications, this pump delivers precise pressure and flow for digging, loading, and steering functions. To withstand the frequent high-pressure spikes common in E-series operations, we utilize reinforced swashplates and high-strength ductile iron housings. Every pump undergoes 100% full-load condition testing to ensure Load-Sensing responsiveness, guaranteeing 100% original-place interchangeability.

Technical Specifications:

• Part Number: 267-2755 / 2672755

• Compatible Models: Caterpillar 420E, 430E, 432E, 434E, 442E, 444E

• Pump Type: Variable Displacement Axial Piston Pump

• Control Logic: Load Sensing (LS) Control

• Rated Operating Pressure: 250 bar (25 MPa)

• Peak Pressure: 280 bar (28 MPa)

• Mounting Interface: CAT-specific SAE Standard

• Housing Material: Heavy-duty Ductile Iron

• Weight: Approx. 45 kg

Key Technical Advantages:

• Precise Load-Sensing Response: The integrated compensator valve is factory-calibrated to adjust flow instantaneously based on operator input. This improves joystick feedback and significantly reduces fuel consumption during idling.

• High-Durability Rotor Assembly: Pistons and cylinder bores are micron-matched, and the valve plate undergoes deep nitriding treatment. This drastically enhances wear resistance during high-pressure cycles, extending the mean time between overhauls.

• Optimized Suction & Anti-Cavitation: Designed for the variable operating angles of mobile machinery, the internal galleries ensure stable oil intake even on slopes or at high RPMs, preventing catastrophic cavitation damage.

• Heavy-Duty Swashplate Bearings: High-load capacity bearings are utilized to absorb sudden radial forces during aggressive digging, ensuring structural integrity in the toughest job site environments.

Application Areas:

• Municipal Works: Core power for digging and loading operations in 420E/430E loaders.

• Road Maintenance: Powering hydraulic breakers or cold planer attachments.

• Agriculture & Landscaping: Providing precise fluid power for various attachment tasks.

Expert Maintenance Tips:

• System Flushing: Before installing the new pump, thoroughly clean the hydraulic tank and replace all filters. Residual metallic debris from a previous pump failure can instantly damage the new unit’s valve plate.

• LS Pressure Verification: Post-installation, verify that the Load-Sensing (LS) differential pressure meets CAT service manual standards to ensure optimal system performance.

• Fluid Cleanliness: We strongly recommend using CAT 10W or equivalent high-quality hydraulic oil, maintaining a cleanliness level of ISO 18/16/13 or better.