HOW TO READ HYDRAULIC/PNEUMATIC SCHEMATICS

  1. International Standards Organization (ISO) Jurisdiction

         Comparison to:

  • ANSI 

  • USASI

  • JIC

  • SAE

  • DIN (metric)


  1. Comparing Hydraulic and Pneumatic Graphic Symbols

    • Fluid functions

    • Component identification

    • Pressure indications

    • Envelope indications

    • Piping and plumbing identification

    • Full circuit tracing (begin at the beginning)


  1. Identifying Pressure Symbols

    • Negative pressure (vacuum)

    • Working pressure

    • Pilot pressure

    • Drain pressure

    • Return pressure


  1. How to Immediately Differentiate Between Hydraulic and Pneumatic Symbols


  1. Importance of Correct Symbol Usage When Drawing Schematics


  1. Value of Reading Schematics When Troubleshooting

    • Study of mobile, industrial, process, marine and agriculture equipment schematics to increase proficiency

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