Session Listing

A complete list of all the subjects we cover.

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20 Electrical Sessions

Basic Electrical Concepts

Updated March, 2018 • 4 Materials

When studying electrical circuits, you need to start with the fundamentals: Voltage, Current, and Resistance.

Learn about: Resistance, Power, Amps, Voltage, Ohms, Ohm's Law, Watts, and a whole lot more.

CAN Bus

Updated December, 2018 • 5 Materials

Ready to learn about the CAN Bus Protocol.

Learn about: Bus, Message Identifier, Start Field, Confirmation Field, CAN-H, Data Field, Transceiver, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Crimp, Flux, Plug, Solder Joint, Solder, Female, Male, and a whole lot more.

Diodes

Updated July, 2019 • 5 Materials

Learn to use your multimeter to test a diode.

Learn about: Multimeter, Light Emitting Diodes, Electrical, Rectifier, Bias, PNP, N-type, and a whole lot more.

Electrical Hazards & Safety

Updated March, 2018 • 3 Materials

Even low voltage systems can seriously injure or even kill.

Learn about: Electrical PPE, Electrically Insulated Footwear, Electrical Safety, Hazards, Burn, Zero Energy, Flame Resistant, and a whole lot more.

Electrical Measurements

Updated January, 2017 • 4 Materials

Digital Multimeters (DMM) are one of the most powerful tools available to electricians.

Learn about: Open Circuit, Fluke Meter, Digital Multimeter, Resistance Test, DMM, Ammeter, Test For Blown Fuse, and a whole lot more.

Flow Sensors

Updated July, 2018 • 3 Materials

Both the electromagnetic flow meter and the mass flow meter measure flow without adding a turbine or a restriction to the mix.

Learn about: Coriolis, MFMS, Mag Flow Meter, , Magnetic Field, Rate, Electrodes, and a whole lot more.

Fuses & Circuit Breakers

Updated January, 2017 • 2 Materials

This mini-session gives you a quick overview of these critical circuit protection devices.

Learn about: Fuse Test, Blown Fuse, Circuit breaker, Short Circuit, Digital Multimeter, Electrical Circuit Protection, Inspecting Fuses, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Tag, Wire Crossing, IES, Off-Page, Symbol, Schematic, Draft, and a whole lot more.

Open & Short Circuit Faults

Updated April, 2019 • 7 Materials

In this session, you'll apply electrical principles to troubleshooting.

Learn about: Troubleshooting, Short Circuit, Electrician, Short Circuit Fault, Hydraulic Loader Fault, Open Circuit Fault, Meter Reading, and a whole lot more.

Position Sensors

Updated July, 2018 • 9 Materials

Inductive, Capacitive, Photoelectric and Ultrasonic proximity sensors are covered in this session.

Learn about: Thru-Beam, Proximity, Ultrasonic, Retroreflective, Diffuse, Sensor, Photoelectric, and a whole lot more.

Pressure Sensors

Updated July, 2018 • 10 Materials

Pressure sensing can be done with one of several kinds of technologies.

Learn about: Piezoelectric Sensors, Pascal, Diaphragm Gauge, psia, Strain Gauges, psig, Bourdon Tube Gauge, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: Electrical Circuit, Switch, Throw, Relay, Diagnostic, Single Pole Double Throw, System, and a whole lot more.

Semiconductors

Updated January, 2017 • 3 Materials

Transistors are the focus of this session, plus you'll learn how to prevent damage to these sensitive components.

Learn about: Troubleshooting, JFET, Schematic, Metal Oxide Varistor, Electronics, Semiconductor, Maintenance, and a whole lot more.

Sensor Basics

Updated October, 2019 • 15 Materials

Sensors are everywhere in our electrical world.

Learn about: Transducer, Upper Range Value, Sourcing, Lower Range Value, Transmitter, Live Zero, Normalizing, and a whole lot more.

Series & Parallel Circuit Basics

Updated August, 2019 • 9 Materials

Series and parallel circuits are at the heart of every electrical system.

Learn about: Electrical Circuit, Series, Branch, Parallel, Industrial Maintenance, Troubleshooting, Electrician, and a whole lot more.

Starting & Charging Systems

Updated January, 2017 • 3 Materials

Dig into mobile electrical circuits with this session on starting and charging systems.

Learn about: 24V, Equalizer, Troubleshooting, 12V, Alternator, Electrical, Starter, and a whole lot more.

Switches

Updated July, 2019 • 13 Materials

Switches are one of most common control elements used in electrical circuit design.

Learn about: Control, Double Pole, Single Pole, Push Button, Toggle, Three Way Switching, Throw, and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: wiper, Variable Resistor, AC temperature control, Resistance, Rheostat, 2 lead, Potentiometer, and a whole lot more.

Waveforms & Signal Generation

Updated October, 2018 • 8 Materials

Direct current is common in low voltage systems, but as soon as you start working with high voltage, you'll need to know about alternating current.

Learn about: Hertz, DC, ECM, Control Voltage, Resistance, AC, Root Mean Square, and a whole lot more.

24 Hydraulics Sessions

Cartridge Valves

Updated July, 2020 • 5 Materials

In this session you'll find an in-depth introduction to slip-in cartridge valves.

Learn about: poppet, damping valves, throttle valves, hydraulics, valve cover plate, check valves, active control, and a whole lot more.

Counterbalance Valves

Updated September, 2019 • 7 Materials

Counterbalance valves allow raised loads to be lowered safely, with a minimum of wasted energy.

Learn about: Counterbalance Valve, Adjusting a Counterbalance Valve, Raised Load, Motion Control, Safety, Load Holding, Runaway Load, and a whole lot more.

Cross-Port Relief Valves

Updated February, 2020 • 5 Materials

Cross-port relief valves expand on the standard relief valve to control otherwise destructive pressures created by external forces acting against an actuator.

Learn about: Cross-Port Relief Valves, Flywheel Mass, Regenerative, Overpressure, Braking Valves, and a whole lot more.

Electro-Hydraulic Valves

Updated June, 2020 • 8 Materials

Enter the world of electro-hydraulic valves in this session.

Learn about: electro-hydraulic valves, proportional valves, servo valves, moog, and a whole lot more.

Fixed & Variable Displacement Pumps

Updated June, 2020 • 32 Materials

If you have questions about hydraulic pumps, this is the session for you.

Learn about: Rotating Group, Rotor, Variable Displacement, Heat, Unbalanced Vane Pump, Vanes, Outlet, and a whole lot more.

Flow & Directional Control Valves

Updated August, 2020 • 34 Materials

This session is absolutely packed with fun lessons and interactive animations.

Learn about: Infinite Position, Response, Operator, Spool, Position, Two Section Valves, Open, and a whole lot more.

Fluid Power Basics

Updated September, 2018 • 8 Materials

If you're looking for the starting point in your study of hydraulics, this is it.

Learn about: Laminar Flow, Fluidic Principles, Work, Litres Per Minute, Newtons, Static Pressure, Flow, and a whole lot more.

Hydraulic Accessories

Updated June, 2020 • 11 Materials

This session covers a handful of hydraulic accessories.

Learn about: Female, Filters, BSPT, Calipers, Metric Taper, Male, Dynamic Threads, and a whole lot more.

Hydraulic Actuators

Updated September, 2019 • 13 Materials

Linear and rotary actuators are the muscles of a hydraulic system.

Learn about: Blind End, Tube/Barrel, Rod End, Cylinder, TSTP, Gland, Piston, and a whole lot more.

Hydraulic Hazards & Safety

Updated January, 2017 • 3 Materials

Safe working habits around hydraulic systems save lives.

Learn about: Unexpected Motion, Heat, Hose and Fitting Failure, Flammability, Pinch Points, System Adjustment Hazards, Zero Energy State, and a whole lot more.

Hydraulic Schematic Symbols

Updated August, 2019 • 10 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: hydraulic pilot, flow control, Schematic symbols, accumulator, electrical line, solenoid, tank, and a whole lot more.

Hydraulic Steering

Updated September, 2019 • 6 Materials

This session will go into detail on hydraulic power steering and how it works.

Learn about: orbitrol, power steering, HMU, steering valve, Hand Metering Unit, hydraulic steering, and a whole lot more.

Hydrostatic (Closed Loop) Systems

Updated July, 2020 • 17 Materials

Get right into the design of closed loop systems with colourful graphics and detailed drawings.

Learn about: Hydrostatic Loop, Pressure Compensated Pump, Charge Pump, Mobile, Servo, Reversing Flow, Hot Loop, and a whole lot more.

Load Sensing Pumps

Updated August, 2020 • 18 Materials

This animated and interactive session takes the mystery out of load sense.

Learn about: Load Sensing Compensator, Equilibrium, Orifice, Margin Pressure, Hunting, Load Sense, Pressure Differential, and a whole lot more.

Open & Closed Center Systems

Updated July, 2020 • 10 Materials

This session tackles the differences and similarities between open and closed center systems.

Learn about: Sectional Valve Bank, Mobile, Open Loop, Open Center, Closed Loop, Closed Center, and a whole lot more.

Parallel & Series Systems

Updated March, 2020 • 19 Materials

Parallel and Series circuits behave very differently.

Learn about: Parallel Circuits, Restriction, Load, Branch, Series Circuits, System Pressure, Pressure Drops, and a whole lot more.

Pilot Controllers

Updated April, 2020 • 3 Materials

Whether you're using a joystick to raise or swing a boom, or floor pedals for forward or reverse track motion, you're interacting with a pilot controller.

Learn about: Pilot Controllers, Pilot Valve, Control Stick, Hydraulic Control, Manual Pilot Control, Joysticks, and a whole lot more.

Positive & Non-Positive Pumping

Updated August, 2020 • 15 Materials

Positive and Non-Positive Pumping tackles the differences between the two types of systems, and the design and maintenance needs of each.

Learn about: Cavitation, Net Positive Suction Head, Non Positive Displacement, Positive Pressure, Mechanical Erosion, Slippage, Partial Vacuum Pressure, and a whole lot more.

Pressure & Flow

Updated February, 2020 • 24 Materials

This session gets you started with a solid foundation on pressure and flow basics.

Learn about: Flow Rate, Velocity, Gauge, Resistance, Positive Displacement Pump, FPA Triangle, Fluid Velocity, and a whole lot more.

Pressure Reducing Valves

Updated June, 2020 • 7 Materials

Pressure reducing valves function very differently than relief valves, even though their schematic symbols look very similar.

Learn about: Pilot Operated, Normally Closed, Pressure Reducing Valve, Pressure, Downstream Pressure, Direct Acting, and a whole lot more.

Pressure Relief Valves

Updated September, 2020 • 29 Materials

Jump into relief valves with this colorful session.

Learn about: cartridge, pressure control valve, relief valves, limit maximum system pressure, direct acting relief, poppet, spring, and a whole lot more.

Sequence Valves

Updated August, 2019 • 5 Materials

Sequence valves are used on many machines to choreograph hydraulic functions.

Learn about: Hydraulic, Valve, Sequence, Training, Sub-Circuit, Order, Set Pressure, and a whole lot more.

Troubleshooting Processes

Updated January, 2017 • 7 Materials

Troubleshooting a hydraulic system can be a demanding and tricky task.

Learn about: Hit or Miss, TSTP, Downtime, Failure, easy-to-check order, Guess and Check, Ten Step Troubleshooting Process, and a whole lot more.

Unloading Valves

Updated January, 2020 • 7 Materials

Unloading valves are often confused with relief valves, but they play a unique role in hydraulic systems.

Learn about: Efficient, Balanced Relief Valve, High-Low Circuit, Volume Pump, Fast Approach Slow Feed Circuit, Energy Saving, External Pilot Section, and a whole lot more.

21 Machinery Sessions

Aerial Work Platforms

Updated April, 2020 • 1 Material

The world of the aerial work platform (AWP) or the mobile elevated work platform (MEWP) includes a group of machines that are very popular in construction and building maintenance.

Learn about: Slab Scissor Lift, Mobile Elevated Work Platform, MEWP, Aerial Work Platform, Scissor Lift Hydraulics, AWP, and a whole lot more.

Blast Hole Drills

Updated March, 2018 • 3 Materials

This session gets you right into the hydraulic circuit sections in a common blast hole drill.

Learn about: Propel, Brakes, Blast Hole Drill, Hydraulic Circuit, Diverter, Holdback, Simulation, and a whole lot more.

Cat Excavators

Updated March, 2020 • 3 Materials

Familiarize yourself with the inner workings of excavator hydraulic systems that are specific to Caterpillar.

Learn about: CAT, Bucket Circuit, Boom Circuit, Excavator, Track Drive, Swing Circuit, 385C, and a whole lot more.

Cat Haul Trucks

Updated May, 2019 • 2 Materials

Explore Caterpillar haul trucks with a couple animated circuits in this session.

Learn about: Simulations, Hoist Circuit, Steering Circuit, Haul Truck, and a whole lot more.

Coal Stacker-Reclaimer

Updated July, 2020 • 2 Materials

Coal stacker-reclaimers are used to either receive coal or to stockpile it.

Learn about: Coal, Hoist Circuit, Stacker, Mining Equipment, Reclaimer, and a whole lot more.

Coiled Tubing Units

Updated September, 2020 • 14 Materials

This session is specific to coiled tubing units and problems related to injector chain tension and traction.

Learn about: chain tension, hydraulic faults , Coil tubing injector, coiled tubing, injector traction, and a whole lot more.

Concrete Pump

Updated November, 2019 • 4 Materials

This session is all about truck-mounted concrete pumps.

Learn about: truck, duplex plunger pump, concrete, cement, and a whole lot more.

Deere-Hitachi Excavators & Shovels

Updated April, 2020 • 22 Materials

In the world of excavators & shovels, there are a lot of specialized hydraulic components used to solve problems specific to such large mobile machinery.

Learn about: heavy machinery, solenoid valves, pump controller, Electro-hydraulic control valve, pump regulator, EHC Valve, and a whole lot more.

Graders

Updated September, 2020 • 9 Materials

Enjoy this collection of videos and simulations about Graders, such as the Caterpillar H Series and the M Series.

Learn about: Implements, Brakes, Steering, 24M Series, Cat Grader Schematics, Caterpillar Hydraulics, 24H Series, and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

Learn about: generation, regulate, dam, governor, hydroelectric, power, engine, and a whole lot more.

Komatsu Haul Trucks

Updated July, 2020 • 8 Materials

Check this session out for a bundle of 830E and 930E Live Schematics, plus a 3D video.

Learn about: Hydraulic, Brakes, Bleeddown Manifold, Komatsu, 830E, Live Schematic, Split Spool Section, and a whole lot more.

Loaders

Updated February, 2020 • 9 Materials

Get to know your way around the hydraulics on a loader with the advanced simulations in this sessions.

Learn about: Loader Schematic, Bucket, Tilt, Steering, Lift, Wheel Loader, Shock Valve, and a whole lot more.

Lube Systems

Updated September, 2019 • 2 Materials

Keeping bearings and gears lubricated in a production environment often involves a pumped lubricant.

Learn about: Lubricant, Simulation, Bearings, Hydraulic Lube Systems, and a whole lot more.

Mobile Equipment Air Compressors

Updated December, 2019 • 4 Materials

This session is an introduction to some mobile pneumatic system basics.

Learn about: air governor, piston compressor, Mobile pneumatics, and a whole lot more.

Oilfield Cementing

Updated May, 2018 • 1 Material

Oilfield cementing has driven industrial process technology to produce many specialized components, which you'll learn about in this session.

Learn about: Oilfield, Cement Metering Valve, Dust, Air Entrainment, Mixing Head, Diffuser, Dry Blending, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Power End, Re-packing, Fluid End, Triplex, Discharge Valve, Reciprocating Plunger Pump, Quintuplex, and a whole lot more.

Paper Machine Winder

Updated August, 2020 • 3 Materials

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Learn about: , and a whole lot more.

Pulp Bale & Slab Presses

Updated August, 2020 • 4 Materials

Compacting sheet pulp or loose pulp to a bale size that is optimal for shipping requires a massive hydraulic press.

Learn about: Pulp bale press, pulp and paper, and a whole lot more.

Rail Car Dumper

Updated June, 2020 • 1 Material

Learn through play about a pulp-chip rail car dumper.

Learn about: Rail, Car, Pulp and Paper, slip-in cartridge, logic, Dumper, low pressure standby, and a whole lot more.

Sawmill

Updated August, 2020 • 4 Materials

Sawmills are full of specialized hydraulic and electrical equipment.

Learn about: Belt, Log, Hydraulic, Sawmill, Conveyor, Quadrant Feeder, and a whole lot more.

Truck Dumper

Updated July, 2020 • 2 Materials

Step through the operational stages as a truck dumper runs in schematic form.

Learn about: Truck Dumper, Valve Solenoid Sequence Chart, and a whole lot more.

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