Resources for the Garnett Cross Hydraulic Maintenance Course available online

Hydraulic Principles

- Pascal's Law and Compressability of Oil

Hydraulic Oil Cleanliness

- Hydraulic Oil Filtration and Relative Micron Sizes

Hydraulic Hoses

- Hydraulic Hose Identification

- Hydraulic Hoses Notes

Hydraulic Cylinders

- Hydraulic Mill Cylinder Drawing

- Threaded Rod End Caps for Hydraulic Cylinder

- Hydraulic Cylinder with Center Piston Seal Drawing

Couplings

- Coupling between Prime mover and Pump or Hydraulic Motor and Device

Hydraulic Symbols

- Hydraulic Symbols - Set 1

- Hydraulic Symbols - Set 2

- Hydraulic Symbols - Set 3

- Hydraulic Symbols - Set 4

Pressure Control Valves

- Relief Valve

- Pilot Operated Relief Valve

- Pressure Reducing Valve

- Pilot Operated Pressure Reducing Valve

Hydraulic Directional Control Valves

- Solenoid Controlled Pilot Operated Directional Valve - Cross Section Drawing

- Soleniod Controlled Pilot Operated Directional Valve - Externally Piloted with Throttling Plate - Cross Section Drawing

- Soleniod Controlled Pilot Operated Directional Valve with Throttling Plate - Cross Section Drawing

- Solenoid Controlled Pilot Operated Valve Detailed Symbol

- Solenoid Controlled Pilot Operated Directional Valve - Simplified Symbol

- Soleniod Controlled Pilot Operated Directional Valve - Externally Piloted with Throttling Plate Circuit - Detailed Symbol

- Solenoid Controlled Pilot Operated - externally piloted - Simplified Symbol

Hydraulic Cylinders in Circuits

- Hydraulic Cylinders with Different Areas Connected In Parallel - Example

- Cylinder Systems

- Hydraulic Cylinder Circuit with 20 Litre Per Minute Pump - Exercise

- Hydraulic Cylinder Circuit with 90 Litre Per Minute Pump - Exercise

- Hydraulic Cylinder Controlled by Cartidge Valves

- Four Hydraulic Cylinder Set Speed Calculations with a Single Pump

Hydraulic Motor Circuits

- Motor Circuits

- Steps for Designing Hydraulic Motor System using a Motor Catalogue

Hydraulic Hydrostatic Drives

- Closed Circuit Hydrostatic Drive System

- Hydrostatic Drive with Proportional Valve Controlling the Pump

Hydraulic System Design

- Hydraulic Formulae

- Parameter to Design a Hydraulic System - Formulae with Example

- Steps for Desiging a Hydraulic System

Hydraulic Reservoirs

- Frame Mounted Hydraulic Oil Reservoir Plan View and Cover Assembly

- Frame Mounted Hydraulic Oil Reservoir - Pump with Flooded Suction

- Suggested Design for Hydraulic Oil Reservoir

Hydraulic Accumulators

- Hydraulic Accumulator Circuit