When you complete this lesson, you will be able to identify and describe the purpose of the various components used in hydraulic circuits. In addition, you will be able to describe the components used to control flow through a hydraulic circuit. • Describe four purposes the reservoir serves in a hydraulic circuit • Identify the three most common types of pumps used in hydraulic circuits • Explain the purpose control valves serve in a hydraulic circuit • Describe the basic operation of a directional control valve • Describe the purpose of the actuator in a hydraulic circuit • 243-03 Hydraulic Fluids At the end of this lesson, you will be able to identify the three basic types of hydraulic fluids. You will also be able to describe what you need to consider when selecting a hydraulic fluid for a specific hydraulic circuit. • Define hydraulic fluids • Identify the three basic categories of hydraulic fluids • Identify the most important factor to consider when selecting a hydraulic fluid for a specific hydraulic circuit • Discuss the difference between monogrades and multigrades • Describe the three major causes of hydraulic fluid contamination
