Lesson 1Function an' operation of hydraulic pumps (gear, vane, piston)Introduce gear, vane, an' piston pumps, explainin' operatin' principles, efficiency, displacement control, an' typical failure modes, wid guidance pon recognizin' wear symptoms an' plannin' preventive maintenance.
External and internal gear pumpsVane pump operation and featuresAxial and radial piston pumpsFixed versus variable displacementCommon pump wear and noise signsLesson 2Hydraulic filters: types, micron ratings, an' installation locationsExplain hydraulic filter types, micron ratings, an' beta ratios, an' show how fi select an' locate filters in suction, pressure, an' return lines fi control contamination an' protect pumps, valves, an' actuators.
Suction, pressure, and return filtersMicron rating and beta ratio basicsFilter media types and dirt holdingChoosing filter locations in circuitsMonitoring clogging and changeoutLesson 3Directional, pressure, an' flow control valves: operation an' common wear patternsDetail directional, pressure, an' flow control valves, coverin' internal operation, symbols, an' typical wear patterns, an' explain how valve condition affect motion control, energy use, an' system stability.
Spool and poppet directional valvesRelief, reducing, and sequence valvesFlow control and throttle valvesValve symbols and port functionsErosion, sticking, and leakage wearLesson 4Auxiliary components: pressure gauges, coolers, accumulators, an' valvesCover auxiliary hydraulic components such as gauges, coolers, accumulators, an' check valves, explainin' dem functions, sizing basics, an' how dem contribute fi safe operation, diagnostics, an' energy efficiency.
Pressure and temperature gaugesAir and water oil coolersBladder and piston accumulatorsCheck and counterbalance valvesSafety devices and relief pathsLesson 5Hoses, fittings, an' piping: materials, pressure classes, an' failure modesReview hoses, fittings, an' rigid piping use in hydraulic systems, focusin' pon material choices, pressure ratings, routing practices, an' common failure modes dat influence safety, leakage, an' service intervals.
Hose constructions and standardsFitting types and sealing methodsPipe and tube materials and ratingsRouting, clamping, and bend radiusBurst, abrasion, and fatigue failuresLesson 6Reservoir design, breathers, an' oil managementCover reservoir sizing, internal layout, an' breather selection, along wid oil level control, contamination prevention, an' thermal management practices dat extend fluid life an' protect sensitive hydraulic components.
Reservoir sizing and dwell timeInternal baffles and return arrangementsBreather types and filtration levelsOil level monitoring and alarmsMoisture and air ingress controlLesson 7Overview of closed-loop an' open-loop hydraulic systemsCompare open-loop an' closed-loop hydraulic systems, explainin' circuit layouts, control behavior, efficiency, an' typical applications, wid emphasis pon how each architecture affect troubleshootin' an' maintenance tasks.
Basic open-loop circuit layoutBasic closed-loop circuit layoutEnergy efficiency and heat generationControl accuracy and responseMaintenance and failure tendenciesLesson 8Typical operating parameters: pressure ranges, temperatures, an' flow rates fi industrial presses (reference values an' sources)Define typical pressure, temperature, an' flow ranges fi industrial hydraulic presses, explain how fi interpret data sheets, an' show how fi use reference standards fi verify safe, efficient operatin' conditions.
Typical system and peak pressure rangesNormal and extreme oil temperature limitsCommon pump and actuator flow rangesReading OEM and ISO data sheetsUsing safety factors in sizingLesson 9Cylinders an' actuators: rod, seals, cushions, an' mounting considerationsDescribe hydraulic cylinders an' actuators, focusin' pon rod design, sealing systems, cushions, an' mounting styles, an' explain how dese features influence load capacity, motion control, leakage risk, an' service life.
Cylinder types and basic constructionRod materials, coatings, and finishesSeal types, functions, and failure signsCushion design and adjustment methodsMounting styles and alignment issues
