Hydraulic Main Pump 369-9655 576-3072 for E374 E390F Excavator

This hydraulic main pump, identified by part numbers 369-9655 and 576-3072, is the primary hydraulic power unit engineered specifically for the hydraulic systems of E374 and E390F excavators. It delivers high-pressure hydraulic oil to drive the boom, arm, bucket, travel, and swing assemblies.

Built on a variable piston structure, the pump combines precise flow control, wear-resistant alloy materials, and precision machining. It is designed for direct replacement installation and delivers stable output performance under heavy-duty mining and construction conditions.

• Internal piston and valve plate wear, leading to pressure drop and weak action.
• Internal seal failure resulting in hydraulic oil leakage.
• Abnormal noise and vibration during operation.
• Servo piston stuck, causing flow adjustment failure.
• Housing cracks caused by overload and high pressure.

• Confirm the part number and machine serial number before ordering.
• Check spline specification, mounting dimension, and control type.
• Request strict pressure and performance testing before shipment.
• Shockproof wooden packaging to prevent transit damage.
• Quality warranty covering manufacturing defects.