Lesson 1 Principles of Hydraulics Lesson 2 Hydraulic Fluids Lesson 3 Strainers and Filters Lesson 4 Reservoirs and Accumulators Lesson 5 Hydraulic Pumps Lesson 6 Piping, Tubing, and Fittings Lesson 7 Directional Control Valves Lesson 8 Pressure Control Valves Lesson 9 Cylinders Lesson 10 Hydraulic Motors