Maintenance of Hydraulic Systems and Components Revision — Excellence, Achievement & Learning Limited Occupational Qualification
Understand the basic principles of Hydraulic Systems, Understand the operation of Hydraulic Components and their Symbols, Understand the principles of Fluid Flow and the operation of Pressure Components, Understand the operation of Hydraulic Sequencing Circuits, Understand the operation of Electro-hydraulic Components and the principles of Electro-hydraulic Circuit Design, Understand the operation of PLC Controlled Hydraulic Systems, Understand the operation of Proportional Hydraulic Valves and Systems, Be able to design, Safely Construct, and Fault Find on hydraulic Circuits, Understand the principles of hydraulic fluid selection and contamination management
Exam Tips
- Practice drawing and interpreting hydraulic circuit diagrams.
- Memorise standard symbols and their functions.
- Understand the relationship between flow, pressure, and component operation.
- Memorise standard symbols for common components.
- Understand the relationship between pressure, flow, and force.
- Practice drawing and interpreting circuit diagrams.
- Memorise standard hydraulic symbols.
- Always consider safety when fault finding.
Common Mistakes
- Confusing the symbols for different valve types.
- Failing to account for pressure drops in circuit design.
- Neglecting fluid contamination risks and maintenance schedules.
- Confusing hydraulic and pneumatic principles.
- Misidentifying component symbols in circuit diagrams.
- Neglecting safety procedures when constructing or fault-finding circuits.
Key Marking Points
- Correctly identify hydraulic components and their symbols.
- Explain the operation of pressure control and directional control valves.
- Design a basic hydraulic sequencing circuit.
- Describe the role of PLCs in controlling hydraulic systems.
- Select appropriate hydraulic fluid and explain contamination control methods.
- Explain the basic principles of hydraulic systems (Pascal's law, fluid power).
- Identify and describe the function of hydraulic components (pumps, valves, actuators).
- Interpret hydraulic symbols and circuit diagrams.