Session Listing

Here is a complete list of all the subjects we cover.

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: Ohms, Watts, Work, Current, Voltage, Resistance, Amps, and a whole lot more.

CAN Bus

Updated December, 2018 • 5 Materials

Ready to learn about the CAN Bus Protocol.

Learn about: Controller, CAN-H, Data Field, Arbitration, Transceiver, Extended CAN, CAN-L, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Screw, Maintenance, Deutsch, Soldering Iron, Solder, Signal, Wick, and a whole lot more.

Diodes

Updated July, 2019 • 5 Materials

Learn to use your multimeter to test a diode.

Learn about: Electrical, Semiconductor, Troubleshooting, LED, Bias, Multimeter, NPN, 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: Hazards, Electrical PPE, , Burn, Flame Resistant, Electrical Safety, Zero Energy, 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: Ammeter, Digital Multimeter, Short Circuit, Resistance Test, Electrical, Measurement, Continuity Test, 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: Density, Rate, Magnetic Field, Faraday's Law of Electromagnetic Induction, MFMS, Conductive, Electromagnetic Flow Meter, 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, Inspecting Fuses, Circuit breaker, Digital Multimeter, Fast acting fuse, Electrical Circuit Protection, Testing Fuses, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Diagram, Standard, Tag, Schematic, Earth Ground, Troubleshooting, Chassis Ground, 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: Short Circuit, Open Circuit, Open Circuit Fault, System Diagnosis, Electrician, Digital Multimeter, Skill, 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: Inductive, Thru-Beam, Capacitive, Proximity, Photoelectric, Retroreflective, Diffuse, 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: Variable Capacitance Sensor, Piezoelectric Sensors, Pressure Sensor, Bar, Differential, psia, psi, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: Relay, Troubleshooting, System, Schematic Symbol, Pole, Diagnostic, Single Pole Double Throw, 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: Maintenance, Electronics, Component, JFET, Electrostatic Discharge, FET, MOV, and a whole lot more.

Sensor Basics

Updated October, 2019 • 15 Materials

Sensors are everywhere in our electrical world.

Learn about: Transmitter, Transducer, Normalizing, Live Zero, NPN, Lower Range Value, PNP, 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: Electrician, Electrical Circuit, Kirchoff's Voltage Law, Branch, Series, KVL, System Design, 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: Alternator, Battery, Electrical, 24V, Equalizer, Starter, 12V, 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: Double Pole, Switch, Normally Open, N.O., Toggle, Pole, Selector, and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: Potentiometer, Rheostat, Variable Resistor, Resistance, 2 lead, AC temperature control, wiper, 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: Digital Control, Volts, Voltage, Sin Wave, Resistance, Direct Current, Duty Cycle, and a whole lot more.

23 Hydraulics Sessions

Cartridge Valves

Updated December, 2018 • 4 Materials

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

Learn about: active control, damping valves, pressure valves, throttle valves, check valves, two-port slip-in cartridge valves, relief valves, 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: Adjusting a Counterbalance Valve, Counterbalance Valve, Raised Load, Load Holding, Motion Control, Safety, Runaway Load, and a whole lot more.

Cross-Port Relief Valves

Updated January, 2017 • 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, Braking Valves, Overpressure, Regenerative, and a whole lot more.

Electro-Hydraulic Valves

Updated April, 2019 • 6 Materials

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

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

Fixed & Variable Displacement Pumps

Updated September, 2019 • 30 Materials

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

Learn about: Volumetric Efficiency, Pressure, GPM, Gear Pump, Driven Gear, Main Gear, Inlet, and a whole lot more.

Flow & Directional Control Valves

Updated December, 2019 • 33 Materials

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

Learn about: Port, Operator, 2-Stage Valves, Two Section Valves, Open, Lands, Choke, 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: Flow, Viscosity, Rotational Force, FPA Triangle, Surface Area, Litres Per Minute, Static Pressure, and a whole lot more.

Hydraulic Accessories

Updated September, 2019 • 11 Materials

This session covers a handful of hydraulic accessories.

Learn about: Material, BSPT, Metric Taper, Piston, International, Thread Profile, Male, 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: TSTP, Piston, Rod End, , Tube/Barrel, Seal, Rotary Actuator, and a whole lot more.

Hydraulic Hazards & Safety

Updated January, 2017 • 3 Materials

Safe working habits around hydraulic systems save lives.

Learn about: Safety, System Adjustment Hazards, Pinch Points, Flammability, Hose and Fitting Failure, Unexpected Motion, 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: electrical line, manifold line, ball valve, orifice, variable, check valve, logic valve, 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: Hand Metering Unit, orbitrol, steering valve, power steering, HMU, hydraulic steering, and a whole lot more.

Hydrostatic (Closed Loop) Systems

Updated November, 2019 • 17 Materials

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

Learn about: Cross Port Relief, Closed Loop, Direct Linkage, Charge Pump, Pressure Compensated Pump, Reversing Flow, Hot Oil Shuttle Valve, and a whole lot more.

Load Sensing Pumps

Updated November, 2019 • 18 Materials

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

Learn about: Piston Pump, LS, Margin Pressure, Flow Control, Load Sense, Pressure Differential, Orifice, and a whole lot more.

Open & Closed Center Systems

Updated September, 2019 • 10 Materials

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

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

Parallel & Series Systems

Updated September, 2019 • 20 Materials

Parallel and Series circuits behave very differently.

Learn about: Load, Restriction, System Pressure, Branch, Path of Least Resistance, Pressure Drops, Series Circuits, and a whole lot more.

Positive & Non-Positive Pumping

Updated May, 2018 • 16 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: Net Positive Suction Head, Slippage, Cavitation, Starved Inlet, Partial Vacuum Pressure, Aeration, Positive Pressure, and a whole lot more.

Pressure & Flow

Updated October, 2019 • 23 Materials

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

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

Pressure Reducing Valves

Updated September, 2019 • 7 Materials

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

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

Pressure Relief Valves

Updated September, 2019 • 27 Materials

Jump into relief valves with this colorful session.

Learn about: normally open, normally closed, counterbalance valves, cartridge, pressure override, unloading valves, direct acting relief, 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: Sub-Circuit, Order, Training, Pressure, Valve, Hydraulic, 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: TSTP, Failure, Hit or Miss, Downtime, 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: High-Low Circuit, Balanced Relief Valve, Fast Approach Slow Feed Circuit, Pressure, Pressure Pump , External Pilot Section, Energy Saving, and a whole lot more.

19 Machinery Sessions

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: Drill, Brakes, Simulation, Hydraulic Circuit, Blast Hole Drill, Animation, Diverter, and a whole lot more.

Cat Excavators

Updated September, 2018 • 3 Materials

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

Learn about: Caterpillar, Bucket Circuit, 385C, Track Drive, Swing Circuit, CAT, Boom Circuit, 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, Haul Truck, Steering Circuit, Hoist Circuit, and a whole lot more.

Coal Stacker-Reclaimer

Updated June, 2018 • 2 Materials

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

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

Coiled Tubing Units

Updated September, 2019 • 4 Materials

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

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

Concrete Pump

Updated November, 2019 • 4 Materials

This session is all about truck-mounted concrete pumps.

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

Deere-Hitachi Excavators & Shovels

Updated January, 2020 • 25 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: EHC Valve, pump regulator, solenoid valves, heavy machinery, Electro-hydraulic control valve, pump controller, and a whole lot more.

Graders

Updated December, 2019 • 5 Materials

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

Learn about: , and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

Learn about: generation, engine, hydraulic, hydroelectric, governor, power, electricity, and a whole lot more.

Komatsu Haul Trucks

Updated December, 2019 • 8 Materials

Check this session out for a bundle of 830E and 930E Live Schematics.

Learn about: 830E, Steering, 930E, Inlet Section, Hoist, Split Spool Section, Hydraulic, and a whole lot more.

Loaders

Updated December, 2019 • 9 Materials

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

Learn about: Loader Schematic, Shock Valve, Front-End Loader, Mobile Equipment Hydraulic, Wheel Loader, Steering, Bucket, 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: Bearings, Hydraulic Lube Systems, Simulation, Lubricant, 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: piston compressor, Mobile pneumatics, air governor, 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: Diffuser, Dust, Cement Metering Valve, Cementing, Dry Blending, Slurry, Oilfield, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Discharge Valve, Re-packing, Reciprocating Plunger Pump, Packing, Quintuplex, Maintenance, High Pressure Pumping, and a whole lot more.

Pulp Bale Presses

Updated April, 2018 • 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, 2018 • 1 Material

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

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

Sawmill

Updated September, 2019 • 1 Material

Sawmills are full of specialized hydraulic and electrical equipment.

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

Truck Dumper

Updated November, 2018 • 1 Material

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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