Title: Explain terminology and schematic symbols used for a hydraulic system and pneumatic system.
Course: Agricultural Power Systems (18402-I) > Section: Applying Knowledge of Hydraulics and Pneumatics

Explanation should include

- terms, such as schematic (a simple way to illustrate all the components and connections in a hydraulic system)
- symbols, such as
  - lines styles that represent hydraulic hoses, pipes, and tube assemblies
  - colliding lines (connected or separate)
  - component shapes
    - circle - rotary components - motors, pumps
    - diamonds - fluid conditioning components - oil filters, heaters, coolers
    - squares - valve components - relief valves, pressure reducing valves, counterbalance valves

  - operator symbols – drawn beside a component symbol to show how that component is controlled – solenoid, spring, mechanical linkage, pneumatic pilot, hydraulic pilot
  - miscellaneous symbols – variable adjustment, tank/reservoir, rotation arrow, ball valve, check valve, orifice.

Teacher Resource: Hydraulic Schematic Symbols: lesson, videos, puzzles, and quiz, LunchBox Sessions, CDIG Inc. (https://www.lunchboxsessions.com/explore/hydraulics/hydraulic-schematic-symbols)

Process/Skill Questions:

- Why does a technician need to learn to use symbols and understand terminology?
- What symbol is used to represent a line under pressure?