DIET 2001 Syllabus

 

Basic Hydraulic Fundamentals and Principles
Order           Description
   1               Explain principles of fluid power
   2               Implement Pascal's law
   3               Implement the relationship between force, pressure, and area
   4               Demonstrate force, pressure, and area in a hydraulic system
   5               Demonstrate fluid flow characteristics through an orifice
   6               Identify functions of oil in hydraulic systems
   7               Explain the effects of fluid viscosity
   8               Identify types of hydraulic oil
   9               Identify hazards when working on hydraulics
  10              Explain safety practices when working with hydraulics
  11              Perform pressure release before servicing hydraulics

Hydraulic System Components
Order           Description
   1               Identify type of hydraulic filtration system; verify filter application and flow direction.
   2               Service filters and breathers.
   3               Identify causes of system contamination; determine needed action.
   4               Take a hydraulic oil sample.
   5               Check reservoir fluid level and condition; determine needed action.
   6               Inspect and repair or replace reservoir, sight glass, vents, caps, mounts, valves, screens, supply
                    and return lines.
   7               Diagnose causes of component leakage, damage, and restriction; determine needed action.
   8               Inspect hoses and connections (length, size, routing, bend radii, and protection); repair or
                    replace as needed.
   9               Assemble hoses, tubes, connectors, and fittings in accordance with manufacturers'
                    specifications; use proper procedures to avoid contamination.
  10              Inspect and replace fitting seals and sealants.
  11              Identify hydraulic tank ISO symbols
  12              Identify three types of hydraulic pumps
  13              Demonstrate pump operation
  14              Demonstrate the difference between variable displacement pumps and fixed displacement
  15              Perform disassembly and inspection of a gear pump

 

Hydraulic Control Valves
Order           Description
   1               Pressure test system safety relief valve; determine needed action.
   2               Perform control valve operating pressure and flow tests; determine needed action.
   3               Inspect, test, and adjust valve controls (electrical/electronic, mechanical, and pneumatic).
   4               Identify causes of control valve leakage problems (internal/external); determine needed action.
   5               Inspect pilot control valve linkages, cables, and PTO controls; adjust, repair, or replace as
                    needed.

 

Load Sensing Pressure Control (LSPC) Hydraulic System Operation and Testing
Order           Description
   1               Explain LSPC operation and benefits
   2               Demonstrate and explain the operation of the signal network
   3               Explain stand-by pressure
   4               Explain margin pressure
   5               Describe work port pressure
   6               Demonstrate implement stall
   7               Identify a pressure differential gauge
   8               Use tool list to identify correct pressure gauges to use
   9               Demonstrate two ways to flow test a pump
  10              Perform stand-by pressure test
  11              Perform system pressure test
  12              Measure margin pressure
  13              Perform on-machine pump flow test
  14              Perform pressure test for line relief valves
  15              Perform hydraulic cycle time test
  16              Perform system drift test
  17              Identify causes for hydraulic oil overheating
  18              Identify causes for slow implement response
  19              Identify causes for too fast an implement response
  20              Identify causes for sticking control valves
  21              Identify causes for incorrect pressures
  22              Adjust relief valve settings
  23              Adjust stand-by pressure