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Fluid Power Academy

(203041) Introduction to Closed-Loop Oil Systems

(203041) Introduction to Closed-Loop Oil Systems

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AUTHOR:  Rory S. McLaren
ISBN#: 978-0-9639619-3-8

Format: Printed version *8-1/2" x 11". PDF Non-printable (4mb). 104 pages.


    *Shipping charges for printed book orders will be calculated and added at checkout. International orders will require a shipping charge calculation email to the customer from FPA before order is shipped. Printed book orders are shipped within 24 hours of receipt if ordered on a business day prior to 3:00pm (MST).



Closed-loop (hydrostatic) hydraulic systems are used extensively in mobile and industrial machines. From the exterior, they appear complex and intimidating, and they certainly can be.

This manual walks you through a hydrostatic transmission, step-by-step, explaining each and every component in detail. Illustrations and drawings are used throughout the manual to illustrate theory-of-operation and function.

This 100+ page manual is divided into four sections:

  • Theory-of-operation of the principle parts of a closed-loop oil system.
  • Where the principle parts of a closed-loop oil system are typically located and how they interact in the system.
  • A step-by-step guide on how the oil flows through the main circuit, charge circuit and case drain circuit.
  • A comprehensive troubleshooting guide.
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