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Fluid Power System Maintenance and Troubleshooting

Learn about routine inspections, contamination prevention, leak detection, proper installation of hoses, maintenance of pneumatic systems, troubleshooting procedures, and electrical problem-solving in hydraulic systems.

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Fluid Power System Maintenance and Troubleshooting

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  1. Chapter 14 Fluid Power System Maintenance and Troubleshooting Fluid Power System Maintenance • Fluid Power System Troubleshooting

  2. Hydraulic system maintenance is performed based on the results of routine inspections of equipment and systems within a specified period of time.

  3. Mating surfaces in a hydraulic system can often have maintenance problems due to contamination and breakdown of the hydraulic fluid.

  4. Hydraulic cylinders that are not in service must have their rods retracted to prevent contaminants from settling on any exposed metal and entering the system when the rod is moved.

  5. Fluid stains or puddles under hydraulic equipment and hoses indicate the presence of a leak in the line.

  6. Hydraulic hoses must be properly installed for maximum operating life.

  7. When preparing metal surfaces for use in fluid power systems, they should be polished with soft, nonabrasive, manufacturer-approved cleaning pads.

  8. Pneumatic system maintenance requires regular inspection and replacement of compressed air filters.

  9. A hydraulic tester is used to measure the pressure, flow rate, and temperature of hydraulic fluid in a system.

  10. Troubleshooting procedures are followed and documented to isolate and correct hydraulic system problems.

  11. The most common problem in pneumatic systems is insufficient airflow caused by leaks from worn, disconnected, or kinked hoses or tubing.

  12. Air leaks can waste up to 25% of a pneumatic system’s energy.

  13. Plug-in pressure gauges can be used to trace pressure levels through a pneumatic system.

  14. An itemized equipment operation checklist can help an equipment operator provide information that can reduce the amount of time needed for the troubleshooting process.

  15. Troubleshooting electrical problems with an electrically controlled hydraulic system is performed by taking voltage or continuity readings.

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