OEM SBS120 Excavator Main Pump | replacement parts

Piston Assemblies: The piston assemblies are one of the essential components of the main pump.

They help generate the required hydraulic pressure by reciprocating within the pump housing. If a piston assembly is damaged or worn out, it can result in decreased pump performance. Replacing piston assemblies can help restore the pump's efficiency and overall hydraulic system functionality.

Cylinder Block: The cylinder block is a crucial part that houses the pistons and controls the flow of hydraulic fluid. If the cylinder block is damaged, it can lead to leakage and decreased pump performance. Replacing the cylinder block ensures proper sealing and enables efficient fluid flow within the main pump.

Valve Plate: The valve plate is responsible for directing the flow of hydraulic fluid to different parts of the main pump. It contains various control valves that regulate the movement and pressure of the fluid. Over time, the valve plate may develop cracks or wear, leading to fluid leakage and reduced pump efficiency. Replacing the valve plate can help restore proper fluid flow and improve overall pump performance.

Shaft and Bearings: The shaft and bearings provide support and stability to the moving parts of the main pump. Continuous operation and high pressures can cause these components to wear out or become damaged. Replacing the shaft and bearings ensures smooth rotation of the pump's internal parts, reducing friction and extending the pump's lifespan.

Seals and O-Rings: Seals and O-rings are crucial for preventing fluid leakage within the main pump. These components create a tight seal between different parts, such as the cylinder block, valve plate, and housing. Over time, seals and O-rings can deteriorate, resulting in leaks and decreased pump efficiency. Replacing these seals and O-rings helps maintain the integrity of the hydraulic system and prevents fluid loss.

Drive Coupling: The drive coupling connects the main pump to the engine or motor, enabling the transfer of power.

If the drive coupling is damaged or worn out, it can lead to power transmission issues and reduced pump performance. Replacing the drive coupling ensures a secure and efficient connection between the pump and the power source.

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