A4VSO71 Pump Parts

The A4VSO71 is a commonly used axial piston variable displacement pump from the Rexroth A4V series, widely used in mobile hydraulic systems, especially in construction machinery. Similar to the A4VSO40, A4VSO45, A4VSO50 and A4VSO56, it is known for its high efficiency, strong reliability and wide flow range.

A4VSO71 Pump Main Components

Cylinder Block Houses the piston and cylinder barrel.

Swash Plate Controls the angle of the piston, thereby regulating the output of the pump.

Valve Plate Guides the flow direction of the hydraulic oil within the pump.

Piston and Shoe Assembly Converts the rotational motion of the swash plate into linear motion of the piston.

Bearing Assembly Supports the rotating parts and reduces friction.

Shaft Transfers power from the drive motor to the pump.

Seal Kit Prevents internal leakage and contamination.

Common A4VSO71 Pump Parts

Piston and Shoe Assembly These parts are subject to wear and are usually replaced as a set.

Seal kit Includes various seals such as O-rings, shaft seals, and piston seals. Replace regularly to prevent leaks. [Image of A4VSO71 seal kit]

Port plate Controls the direction of fluid flow and may wear out over time.

Bearing assembly Supports the rotating shaft and may be damaged by contamination or overload.

Swash plate Controls the output of the pump and may be damaged by excessive wear or misalignment.

Common A4VSO71 pump problems and solutions

Leaks Caused by worn seals, damaged O-rings, or excessive wear on the cylinder. Solution Replace damaged seals or components.

Reduced flow May be caused by worn swash plate, clogged suction pipe, or internal leaks. Solution Inspect and replace worn parts and check for blockages.

Excessive noise Usually caused by cavitation, worn bearings, or misalignment. Solution Check for air in the system, replace worn bearings, and ensure proper alignment.

Overheating May be caused by insufficient cooling, excessive load, or contamination of the hydraulic oil. Solution Check the cooling system, reduce the load, and replace the hydraulic oil if necessary.

A4VSO71 Pump Maintenance Recommendations

Regular Hydraulic Oil Analysis Monitor the hydraulic oil for contamination and degradation.

Replace Filters Replace filters according to manufacturer recommendations.

Check for wear Check the pump regularly for signs of wear such as scratches or pits.

Proper Lubrication Ensure that all moving parts are properly lubricated.

Avoid Overload Operate the pump within the rated capacity.

Differences between A4VSO71 and other A4V Series Pumps

A4VSO71 belongs to the same series of pumps as A4VSO40, A4VSO45, A4VSO50 and A4VSO56, with basically the same structure and working principle. The main differences are parameters such as size, flow rate and rated pressure. A4VSO71 generally has a higher flow rate and is suitable for applications that require higher flow.

Summary

A4VSO71 is a reliable and durable hydraulic pump that has a wide range of applications in construction machinery and other fields. By understanding its structure, common problems and maintenance recommendations, you can effectively extend the service life of the pump and improve the reliability of the system.

If you need more detailed technical information or maintenance manuals, we can provide the specific model and manufacturer information of the pump.

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