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Hydraulics & System Troubleshooting
Description
Learn the fundamentals of hydraulic components in this intensive hands-on course. You’ll discover how they work and about their function in a hydraulic circuit. You’ll discover how to read and interpret hydraulic schematics and implement safe work practices. In hands-on exercises, you’ll practice preventive maintenance techniques to reduce premature system failures and gain the basic skills you need to be an effective and proactive troubleshooter who is capable of diagnosing and making repairs. You’ll leave with both knowledge and real skills in hydraulics systems.
Agenda [download course agenda]
Hydraulics Training and System Troubleshooting Principles and Laws
• Force, flow and pressure
• Work and power
• Pascal’s law
• Pressure/flow relationships
• Pressure/force relationships
• Pumps
• Positive displacement only: gear, vane, piston
• Operation principles
• Efficiencies comparison
• Pressure compensation
Hydraulic Motors
• Three major types
• Principles of operation
• Basic circuit considerations
Cylinders
• Types of construction
• Seals
• Design considerations
• Regeneration
• Cushions
• Sizing of cylinders
• Troubleshooting
Fluids
• Types/characteristics
• Filtration
• Cavitation
• Fluid analysis
Auxiliary Devices
• Accumulators
• Heat exchangers
• Reservoirs
Flow Controls
• Non pressure compensated
• Pressure compensated
• Flow control placement
• Temperature compensated
• Pressure intensification
Typical Circuits
Pressure Controls
• Relief valves: simple and compound
• Sequence valves
• Pressure reducing valves
• Unloading valves
• Counterbalance valves
• Principles of operation
• Symbols
Directional Controls
• 2-way, 3-way and 4-way valves
• Manual, solenoid and pilot operation
• Open, closed and other center conditions
• Internal and external pilot
• Valve terminology and symbols
Transmission Lines and Fittings
• Velocity and sizing
• Pipe, tubing and hose
Basic Circuits
• Open vs. closed center
• Series/parallel
• Unloading/sequencing
• Load sensing
• Troubleshooting and basic practices
• Failure symptoms
Hands-On Lab Exercises
• Basic troubleshooting requirements
• Principles of fluids and fluid flow
• Principles of motion and force
• New vs. old systems
• What do we mean by failure
• Diagnostic equipment
• Noisy pumps, cavitations, aeration
• No system pressure
• Low or erratic system pressure
• No movement of actuator
• Slow or erratic operation of actuator
• System running hot
• Noise control
• Common cylinder problems
• Common cylinder circuit problems
• Solenoid failure
• Leakage control
• Hydrostatic transmission troubleshooting guide