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: Watts, Energy Conversion, Ohm's Law, Work, Ohms, Current, Voltage, and a whole lot more.

CAN Bus

Updated December, 2018 • 5 Materials

Ready to learn about the CAN Bus Protocol.

Learn about: Cyclic Redundancy Check Field, Network, NRZI, Node, CAN-L, Message Frame, Control Field, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Optical Fiber, Weather Pack, Deutsch, Data, Pin/Plug, Control, Plug, and a whole lot more.

Diodes

Updated August, 2018 • 4 Materials

Learn to use your multimeter to test a diode.

Learn about: N-type, Flyback, P-type, Circuit, PNP, Electrical, 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: Static Dissipative Footwear, Electrically Insulated Footwear, Electrocution, Electrical Safety, , Burn, 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: DMM, Digital Multimeter, Short Circuit, Fluke Meter, Resistance Test, Measurement, Ammeter, 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: Electromagnetic Flow Meter, , Conductive, Density, Rate, Mass Flow Measuring System, Mass Flow Rate, 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, Digital Multimeter, Circuit breaker, Slow blow fuse, Fast acting fuse, Testing Fuses, Inspecting Fuses, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Wire Crossing, Off-Page, Signal Ground, Draft, Tag, Layout, Standard, and a whole lot more.

Open & Short Circuit Faults

Updated January, 2017 • 5 Materials

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

Learn about: Digital Multimeter, Open Circuit, Ten Step Troubleshooting Process, Short Circuit, Open Circuit Fault, Hydraulic Loader Fault, System Diagnosis, 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: Retroreflective, Thru-Beam, Photoelectric, Diffuse, Proximity, Capacitive, Nominal Range, 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: Gauge Pressure, Indicator Fluids, Manometer, Pressure, Wheatstone Bridge, Gauge, Differential, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: Electrical Circuit, Diagnostic, Troubleshooting, Switch, Pole, Single Pole Double Throw, Schematic Symbol, 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: Component, JFET, Semiconductor, MOV, Metal Oxide Varistor, Electronics, Maintenance, and a whole lot more.

Sensor Basics

Updated August, 2018 • 14 Materials

Sensors are everywhere in our electrical world.

Learn about: Transmitter, PNP, Live Zero, Lower Range Value, Zero, Span, Transducer, and a whole lot more.

Series & Parallel Circuit Basics

Updated January, 2019 • 8 Materials

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

Learn about: Kirchoff's Voltage Law, Branch, Series, Parallel, Electrician, KVL, Troubleshooting, 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, 24V, Starter, Electrical, Troubleshooting, 12V, and a whole lot more.

Switches

Updated January, 2017 • 12 Materials

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

Learn about: Control, Selector, 3 Way Switching, Switch, N.O., Double Pole, N.C., and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: wiper, 2 lead, Potentiometer, AC temperature control, Variable Resistor, Rheostat, Resistance, 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: Pulse Width Modulation, Digital Control, Frequency, Analog Control, Resistance, Hertz, Voltage, 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: two-port slip-in cartridge valves, logic valve circuits, damping valves, hydraulics, relief valves, check valves, area ratio, and a whole lot more.

Counterbalance Valves

Updated January, 2017 • 5 Materials

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

Learn about: Motion Control, Adjusting a Counterbalance Valve, Safety, Counterbalance Valve, Raised Load, Runaway Load, Load Holding, 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: Regenerative, Flywheel Mass, Cross-Port Relief Valves, Braking Valves, Overpressure, and a whole lot more.

Electro-Hydraulic Valves

Updated July, 2018 • 5 Materials

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

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

Fixed & Variable Displacement Pumps

Updated March, 2019 • 25 Materials

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

Learn about: Piston Pump, Swash Plate, GPM, Volumetric Efficiency, Pressure Differential, Variable Displacement, LPM, and a whole lot more.

Flow & Directional Control Valves

Updated February, 2019 • 19 Materials

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

Learn about: TSTP, Port, Main Valve Section, Operator, Closed, Valve Stack, 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: FPA Triangle, Viscosity, Turbulent Flow, Litres Per Minute, Force Multiplication, lpm, Gravity, and a whole lot more.

Hydraulic Accessories

Updated July, 2018 • 10 Materials

This session covers a handful of hydraulic accessories.

Learn about: Crest, Complete Threads, Filters, Metric Parallel, Screw Pitch, Thread Size Chart, Compressed Gas, and a whole lot more.

Hydraulic Actuators

Updated July, 2018 • 10 Materials

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

Learn about: Rotary Actuator, Motor, Rod, Blind End, Semi-Rotary Actuators, Linear Actuator, Gland, 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, Hose and Fitting Failure, Zero Energy State, Heat, Flammability, Safety, System Adjustment Hazards, and a whole lot more.

Hydraulic Schematic Symbols

Updated January, 2017 • 7 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: variable, logic valve, tank, pilot line, flow control, reservoir, shuttle valve, and a whole lot more.

Hydraulic Steering

Updated January, 2018 • 6 Materials

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

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

Hydrostatic (Closed Loop) Systems

Updated July, 2018 • 13 Materials

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

Learn about: Mobile, Direct Linkage, Hydrostatic Loop, Heat, Closed Loop, Cavitation, Servo, and a whole lot more.

Load Sensing Pumps

Updated January, 2017 • 11 Materials

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

Learn about: Orifice, Equilibrium, Flow Control, LS, Piston Pump, Margin Pressure, Hunting, and a whole lot more.

Open & Closed Center Systems

Updated January, 2017 • 10 Materials

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

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

Parallel & Series Systems

Updated February, 2019 • 16 Materials

Parallel and Series circuits behave very differently.

Learn about: Parallel Circuits, Pressure Drops, Restriction, Load, Branch, Series Circuits, System Pressure, 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: Cavitation, Positive Pressure, Charge Pump, Starved Inlet, Breather, Net Positive Suction Head, Non Positive Displacement, and a whole lot more.

Pressure & Flow

Updated October, 2018 • 16 Materials

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

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

Pressure Reducing Valves

Updated February, 2019 • 5 Materials

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

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

Pressure Relief Valves

Updated March, 2019 • 19 Materials

Jump into relief valves with this colorful session.

Learn about: poppet, relief valves, counterbalance valves, unloading valves, pressure override, external pilot, normally open, and a whole lot more.

Sequence Valves

Updated January, 2017 • 5 Materials

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

Learn about: Set Pressure, Sub-Circuit, Order, Sequence, Pressure, Training, Hydraulic, 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: easy-to-check order, Hit or Miss, Ten Step Troubleshooting Process, Downtime, TSTP, Guess and Check, Failure, and a whole lot more.

Unloading Valves

Updated January, 2017 • 6 Materials

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

Learn about: High-Low Circuit, Volume Pump, Unloading Valve, Pressure, Restriction, External Pilot Section, Fast Approach Slow Feed Circuit, and a whole lot more.

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

Cat Excavators

Updated September, 2018 • 3 Materials

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Learn about: , and a whole lot more.

Cat Haul Trucks

Updated October, 2018 • 1 Material

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Learn about: , and a whole lot more.

Coal Stacker-Reclaimer

Updated June, 2018 • 2 Materials

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Learn about: , and a whole lot more.

Coiled Tubing Units

Updated April, 2018 • 3 Materials

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

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

Deere-Hitachi Excavators & Shovels

Updated July, 2018 • 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: solenoid valves, EHC Valve, pump regulator, heavy machinery, Electro-hydraulic control valve, pump controller, and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

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

Komatsu Haul Trucks

Updated September, 2018 • 7 Materials

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

Learn about: Hydraulic, 830E, Brakes, Split Spool Section, Hoist, Steering, Bleeddown Manifold, and a whole lot more.

Loaders

Updated October, 2018 • 5 Materials

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

Learn about: Boom, Bucket, Shock Valve, Lift, Auxiliary, Steering, Tilt, 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: Clumping, Dust, Slurry, Cement Metering Valve, Oilfield, Cementing, Air Entrainment, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Packing, Suction Valve, Reciprocating Plunger Pump, Quintuplex, Maintenance, Triplex, Positive Displacement 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 and paper, Pulp bale press, and a whole lot more.

Rail Car Dumper

Updated May, 2018 • 1 Material

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

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

Sawmill Conveyors

Updated April, 2018 • 1 Material

Sawmills are full of specialized hydraulic and electrical equipment.

Learn about: Quadrant Feeder, Log, Belt, Conveyor, Sawmill, Hydraulic, 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: Valve Solenoid Sequence Chart, Truck Dumper, and a whole lot more.

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