Hydraulic Piston Motor Assembly 550-1473 for M316 M315 Construction Excavator

The hydraulic piston motor assembly, part number 550-1473, is a hydraulic drive unit purpose-built for the hydraulic systems of M315 and M316 wheel excavators. It converts hydraulic pressure into torque to drive the relevant working assemblies of the machine.

The assembly features a high-torque piston structure, precise sealing design, 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 working conditions.

• Internal piston and valve plate wear, resulting in pressure drop and weak torque
• Internal seal failure causing hydraulic oil leakage
• Abnormal noise and vibration during operation
• Brake piston stuck, leading to brake failure
• Housing cracks caused by overload and impact load

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