O B J E C T I V E S

Symbols

• Identify symbols used to represent the basic parts of a hydraulic circuit.
• Identify types of lines represented on a hydraulic schematic diagram.
• Identify symbols used to represent the following pumps: unidirectional fixed displacement, bi-directional fixed displacement, unidirectional variable displacement, bi-directional variable displacement.
• Identify symbols used to represent the following components: reservoirs, accumulators, heaters, coolers, and filters.
• Identify symbols used to represent the following linear actuators: single-acting, double-acting, fixed cushion cylinder and adjustable cushion.
• Identify symbols used to represent the following hydraulic motors: unidirectional, fixed displacement, bi-directional, fixed displacement, unidirectional, variable displacement, bi-directional, variable displacement.
• Identify symbols used to represent the following valves: pressure relief valve, flow control valve, and directional control valve.

Reading Diagrams

• Describe basic guidelines for reading hydraulic schematic diagrams.
• Use a schematic diagram to describe how fluid flows through an automatic venting circuit.
• Use a schematic diagram to describe how fluid flows though an accumulator circuit.
• Use a schematic diagram to describe how fluid flows through a regenerative circuit.

S U B J E C T S

Symbols

• Overview
• Pumps
• Fluid Storage and Fluid Containers
• Actuators
• Valves

• Diagram Reading Basics
• Automatic Venting Circuit
• Accumulator Circuit
• Regenerative Circuit