Agricultural Equipment Technician 20, 30

(a)	Identify and follow safe work practices (e.g., avoid contact with pressurized hydraulic fluids and brake fluids contacting painted surfaces) when working with hydraulic systems, including maintaining a clean and organized work area.
(b)	Explain the difference between pneumatic and hydraulic systems.
(c)	Describe the uses of pneumatic systems.
(d)	Identify the properties of different hydraulic fluids (e.g., brake, power steering, transmission and lifting systems) including the three main varieties (e.g., petroleum, mineral and synthetic).
(e)	Explain why one hydraulic fluid cannot be used for all applications including why an application-specific additive package may be required by a manufacturer.
(f)	Demonstrate the proper disposal of used hydraulic fluids.
(g)	Summarize potential environmental concerns of hydraulic fluids.
(h)	Identify the parts (e.g., reservoir, pump, valves and actuator) of a hydraulic system.
(i)	Describe the different types of fittings including thread style, function and uses.
(j)	Explain how Pascal’s law applies to hydraulic systems.
(k)	Investigate common hydraulic system component failures (e.g., filter, hose and pump) recognizing to never use a part of the body to detect a hydraulic leak. (e.g., never use your hand to run along a pressurized line).
(l)	Identify the advantages of a hydrostatic drive.
(m)	Explain how a hydrostatic drive works.