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CCOG for APR 172 Fall 2022

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Course Number:
APR 172
Course Title:
Introduction to Hydraulics
Credit Hours:
Lecture Hours:
Lecture/Lab Hours:
Lab Hours:

Course Description

Introduces the physical dynamics and properties of incompressible fluids and the practical application of fluid power principles involving pressure, flow and force to the hydraulic systems found at industrial worksites. Covers fundamental hydraulic schematics and circuits and the function of components including pumps, valves, cylinders, motors, reservoirs, actuators, fluid conductors, and valves. Introduces hydraulic instrumentation, specialized tools, troubleshooting, and maintenance. Emphasizes safety procedures and practices around high pressure hydraulic equipment. Prerequisites: APR 170, and (WR 90 and RD 90) or IRW 90 and MTH 20 or equivalent placement or department permission. Audit available.

Addendum to Course Description

Required Course for Apprentices registered in the Millwright/Industrial Maintenance Technician Apprenticeship Program. It is open to any other student but requires Department Permission to take this course.

Intended Outcomes for the course

  • Apply the operating principles of general hydraulics in order to repair, maintain, install, and analyze a variety of  fluid power systems found at industrial worksites.
  • Use hydraulic theory along with proper safety procedures to troubleshoot common hydraulic system components at industrial worksites.
  • Use hydraulic measuring instruments and tools to diagnose and repair problems in hydraulic systems at industrial worksites.
  • *Develop machine shop skills in troubleshooting (*required statewide outcome).
  • *Read and Interpret trades specific plans and drawings (*required statewide outcome).

Course Activities and Design

The Course Design is primarily lecture with PowerPoint presentations and projections of hydraulic system schematics. This introductory course emphasizes the mathematics and physics of pressure applied to incompressible liquids using in-class calculation and problem solving.

Outcome Assessment Strategies

Assessment will be accomplished using skills' checklists filled out by an adequate sampling of Millwright/Industrial Maintenance Technician Training Agents and/or an Apprentice's Journey Person.

Course Content (Themes, Concepts, Issues and Skills)

  • Introduction to Pascal's Law and calculations
  • Introduction to the physical properties of incompressible fluids and calculations
  • Fluid power transmission
  • Horsepower and energy conversion
  • Pressure calculations for absolute pressure and atmospheric pressure
  • Column pressure for fluids
  • Pressure drop through an orifice
  • Pressure and area calculations
  • Hydraulic Safety practices and procedures including PPE
  • Hoses and hose connectors
  • Specifications including burst pressure limits
  • Hydraulic pumps
  • Check valves, pressure regulating valves, directional valves, proportional valves
  • Hydraulic actuators
  • Reservoirs and accumulators
  • Hydraulic motors
  • Pistons and cylinders
  • Schematics and system design
  • Troubleshooting practices for fluid power systems