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Blog Details
Created with Pixso. Rumah Created with Pixso. Blog Created with Pixso.

Excavator Hydraulic System Troubleshooting: Unstable Pressure and Noise

Excavator Hydraulic System Troubleshooting: Unstable Pressure and Noise

2025-09-09

Introduction

Excavator hydraulic systems rely on stable pump performance. When operators experience unstable pressure or excessive noise, productivity suffers.

Causes of Pressure Instability

  • Valve plate wear

  • Control piston leakage

  • Oil contamination

Causes of Noise and Vibration

  • Cavitation from poor inlet conditions

  • Worn piston shoes

  • Shaft misalignment

Solutions

  • Replace valve plates and piston kits.

  • Ensure proper oil grade and filtration.

  • Inspect inlet lines and case drain.

Conclusion

Timely troubleshooting improves excavator performance and reduces downtime.

Contact Halies Today

Contact Person: Mr. Roberto

Email: jshanlishi03@jshanlishi.com

WhatsApp: +86 139 0153 6676

WeChat: +86 139 0153 6676

Phone: +86 139 0153 6676

 

Get a Quote Now and we will reply within 24 hours.

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Blog Details
Created with Pixso. Rumah Created with Pixso. Blog Created with Pixso.

Excavator Hydraulic System Troubleshooting: Unstable Pressure and Noise

Excavator Hydraulic System Troubleshooting: Unstable Pressure and Noise

Introduction

Excavator hydraulic systems rely on stable pump performance. When operators experience unstable pressure or excessive noise, productivity suffers.

Causes of Pressure Instability

  • Valve plate wear

  • Control piston leakage

  • Oil contamination

Causes of Noise and Vibration

  • Cavitation from poor inlet conditions

  • Worn piston shoes

  • Shaft misalignment

Solutions

  • Replace valve plates and piston kits.

  • Ensure proper oil grade and filtration.

  • Inspect inlet lines and case drain.

Conclusion

Timely troubleshooting improves excavator performance and reduces downtime.

Contact Halies Today

Contact Person: Mr. Roberto

Email: jshanlishi03@jshanlishi.com

WhatsApp: +86 139 0153 6676

WeChat: +86 139 0153 6676

Phone: +86 139 0153 6676

 

Get a Quote Now and we will reply within 24 hours.