Komatsu WA380-3L Main Hydraulic Pump | 423-62-A1510 | Wheel Loader Piston Pump

The 423-62-A1510 axial piston main pump from Chengyuan Hydraulic is a high-performance power unit specifically engineered for Komatsu WA380-3L Wheel Loaders. Utilizing an advanced swashplate design, this pump is perfectly matched with Komatsu’s Closed-center Load Sensing System (CLSS), delivering precise real-time displacement adjustment based on load demand. As a flagship heavy-duty model from Chengyuan, every main pump undergoes 100% full-load simulated testing before delivery. Whether for boom lifting, bucket curling, or steering, it ensures rapid pressure response and stable flow, providing 100% original-place interchangeability.

Technical Specifications :

• OEM Part Number: 423-62-A1510

• Applicable Model: Komatsu WA380-3L Wheel Loader

• Rated Operating Pressure: 31.4 MPa (320 bar)

• Peak Pressure: 35 MPa (350 bar)

• Rated Flow Rate: Approx. 210 L/min at rated speed

• Control Type: Load Sensing (LS) + Constant Horsepower Control

• Pump Structure: Swashplate-type Axial Piston Pump

• Mounting Interface: Specific to Komatsu WA380 (Spline & Flange)

• Weight: Approx. 85 kg

Key Technical Advantages:

• Dynamic Load Response Technology: The control valve group is meticulously calibrated for the complex operational logic of the WA380-3L. During transitions between digging and lifting, the displacement lag is minimized, ensuring smooth boom movement and maximizing loading efficiency.

• Reinforced Internal Componentry: The piston-shoe assemblies utilize high-hardness bimetallic materials, and the valve plate undergoes deep hardening. This heavy-duty internal structure maintains exceptional volumetric efficiency and minimal leakage even under continuous $31.4\text{ MPa}$ pressure.

• Optimized Self-Priming & Efficiency: A large-diameter suction port design reduces flow resistance. Combined with heavy-duty swashplate support bearings, the pump offers excellent anti-cavitation properties at high speeds, significantly lowering operational noise.

• 100% Seamless Integration: All port positions, thread specifications, and spline modulus strictly follow the original 423-62-A1510 standard. This allows for direct replacement without any manifold or pipeline modifications—truly “Plug and Play.”

Application Areas:

• Primary Loader Power: Supplies power for all WA380-3L work attachments (boom, bucket) and steering hydraulic circuits.

• Heavy Mining Operations: Ideal for quarries and coal mines requiring frequent high-load work cycles.

• Construction & Earthmoving: Bulk material handling, stockpiling, and leveling tasks.

Expert Maintenance Tips:

• Case Priming: Before the first engine start after installation, fill the pump case with at least $2\text{–}3\text{ L}$ of clean hydraulic oil via the highest drain port. Dry running will cause immediate catastrophic damage to the pistons and valve plate.

• Pilot Pressure Calibration: After installation, use a pressure gauge to verify the Load Sensing (LS) differential pressure. Correct LS settings improve response times and prevent unnecessary system overheating.

• Cleanliness Management: The WA380 CLSS system is highly precise. Maintain fluid cleanliness at ISO 4406 18/16/13 or better. Regular replacement of return filters is the most critical step in extending the pump’s service life.