1 / 15

Reading Hydraulic Schematics

Reading Hydraulic Schematics. Lecture 9. Purpose of Hydraulic Schematics. Schematics are drawings that you can use to see how a system is put together Schematics can be used to locate where a component is located Useful for troubleshooting. Pumps. Uses a circle with an arrow pointing out

mai
Download Presentation

Reading Hydraulic Schematics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reading Hydraulic Schematics Lecture 9

  2. Purpose of Hydraulic Schematics • Schematics are drawings that you can use to see how a system is put together • Schematics can be used to locate where a component is located • Useful for troubleshooting

  3. Pumps • Uses a circle with an arrow pointing out • Denotes fixed displacement • Variable displacement has a diagonal line going through it

  4. Motors • Similar to a pump, except the arrow is pointing in • If it has 2 arrows, it is bidirectional • A diagonal arrow means it is variable displacement

  5. Pressure Relief Valves • The dashed line indicates internal passages • Can have a spring, or can be pressure operated (sequence valve) • Pilot operated can be marked with a P

  6. Cylinders • Can be single or double acting • Single acting have only one port

  7. Control Valves • Can be tandem (allows flow to tank when closed • Can be closed center (allows no flow in the system)

  8. Control Valves • Can be open center (allows flow on both sides of the valve) • 4 way valves control double acting cylinders • 3 way valves control single acting cylinders

  9. Filters and Coolers • Filters are shown by a diagonal box with a dotted line through it • Oil Coolers are similar except that the line is solid

  10. Oil Reservoir Tanks • Usually one line into it, but can be several • Can be several tank symbols in one drawing, but only one common tank

  11. Gauges • Oil temperature gauges • Oil pressure gauges

  12. Hydraulic Check Valves • Can use a ball and seat or a spring behind the ball

  13. Hydrostatic Transmissions • Usually a variable pump and a motor coupled together • Can use a variable motor also

  14. Other Symbols • Other symbols are used by certain manufacturers • Usually marked or have a legend describing part • Most schematics do not place parts where they actually are on the machine • Must use other manuals to locate parts

  15. Websites and Resources • http://www.hydraulicsupermarket.com • http://www.parker.com • Vickers Mobile Hydraulics Manual • Parker Industrial Hydraulics

More Related