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Home / Products / Hydraulic Pump / Piston Pump / 421AK ADU Hydraulic Variable Displacement Axial Piston Pump Hydraulic Mobile Piston Pump

421AK ADU Hydraulic Variable Displacement Axial Piston Pump Hydraulic Mobile Piston Pump

421AK ADU ADU041 ADU049 ADU062 ADU080
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operations with reliable solutions for ADU pump systems.   To help ensure optimal performance and minimize downtime, we would like to share a concise troubleshooting guide addressing common issues and their effective resolutions.


Abnormal Pressure

This may result from hydraulic pump wear, low relief valve settings, system leakage, or a clogged inlet.   We recommend verifying pump output pressure, adjusting the overflow valve, securing any leakage points, and cleaning the oil inlet promptly.


Abnormal Flow

Potential causes include incorrect throttle valve positioning, worn valve cores, excessive oil viscosity, or blocked filters.   Corrective actions involve adjusting the throttle valve, replacing damaged components, reviewing oil specifications, and ensuring filter cleanliness.


Abnormal Actuation

If the system fails to respond correctly, check for absent control signals, seized valve cores, or inadequate driving pressure.   Inspect electrical connections, clean internal valve parts, and confirm the integrity of the pressure supply.


Leakage

Seal degradation, wear between the oil distribution plate and cylinder body, or loose joints often lead to leaks.   Replace seals as needed, refinish contact surfaces, and ensure proper torque on connecting bolts.


Vibration and Noise

These symptoms may indicate bearing failure, impeller imbalance, or unstable mounting.   Replacing worn bearings, balancing the impeller, and reinforcing the installation base can significantly reduce operational disturbances.



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23456

Jenny


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