BOMAG 05817050 Hydraulic Pump | BW202AD-2 BW219D-2 | Road Roller Parts

The BOMAG 05817050 Hydraulic Pump from LIC Hydraulic is a premium Closed-Loop Variable Displacement Piston Pump engineered specifically for the walking drives of BOMAG road rollers. Compatible with heavy-duty models like the BW202AD-2, BW217, and BW219D-2, this pump provides the critical flow and pressure modulation required for precision paving. We offer 100% drop-in replacements that match original OEM specifications, ensuring your equipment maintains its factory-level gradeability and smoothness.

Technical Highlights

• Part Number: 05817050.

• Compatibility: BOMAG BW202AD-2, BW203AD-4, BW217, BW219D-2, BW219DH-3.

• Pressure Rating: Up to $420\text{ bar}$ ($6000\text{ psi}$) peak pressure.

• Design: Axial piston, swashplate design with integrated charge pump.

Core Advantages

• High-Pressure Reliability: Built to withstand the continuous high-load demands of soil and asphalt compaction, our 05817050 pump delivers consistent hydraulic power across wide temperature ranges.

• Integrated Valving Package: Featuring on-board high-pressure relief valves and charge pressure control, the pump protects the entire closed-loop circuit from pressure spikes during rapid reversals.

• Smooth Inching Response: The precision-calibrated servo-control ensures that machine take-off and braking are jerk-free—essential for achieving high-quality surface finishes on asphalt.

• Vibration Resistance: Specifically reinforced for use on vibrating rollers, the internal rotating groups are balanced to minimize noise and resist mechanical wear from high-frequency vibrations.

Expert Maintenance Tips

• Charge Pressure Verification: For BOMAG rollers, always ensure charge pressure is within the $20\text{–}25\text{ bar}$ range. Low charge pressure is the number one cause of slippers lifting and subsequent pump failure.

• Case Drain Management: Ensure the drain line is connected to the highest port on the pump body. Trapped air can cause localized overheating of the swashplate bearings.

• System Flushing: In the event of a pump failure, it is critical to flush the hydraulic tank and lines. Contaminants from a broken pump will rapidly destroy the new 05817050 unit if the system is not cleaned to ISO 18/16/13 standards.