STANDARD COMPETENCIES:

 

 1. Identify system type (closed and open) and verify proper operation.

 2. Read and interpret system diagrams and schematics.

 3. Perform system temperature, pressure, flow, and cycle time tests; determine needed action.

 4. Verify placement of equipment /component safety labels and placards; determine needed action.

 5. Identify type of filtration system; verify filter application and flow direction.

 6. Service filters and breathers.

 7. Identify causes of system contamination; determine needed action.

 8. Take a hydraulic oil sample for analysis.

 9. Check reservoir fluid level and condition; determine needed action.

 10. Inspect and repair or replace reservoir, sight glass, vents, caps, mounts, valves, screens, supply and return lines.

 11. Diagnose causes of component leakage, damage, and restriction; determine needed action.

 12. Inspect hoses and connections (length, size, routing, bend radii, and protection); repair or replace as needed.

 13. Assemble hoses, tubes, connectors, and fittings in accordance with manufacturers¿ specifications; use proper procedures to avoid contamination.

 14. Inspect and replace fitting seals and sealants.

 TOPICAL OUTLINE:

 

 I.      Hydraulics--How It Works

         A.      Basic Principles of Hydraulics

         B.      How a Hydraulic System Works

         C.      Comparing Open-and Closed-Center Systems

         D.      Variations on Open-and Closed-Center Systems

         E.      The Uses of Hydraulics

 II.     Hydraulic Filters

         A.      How and why Filters Are Used

         B.      Types of Filters

         C.      Contamination

         D.      Maintenance of Filters

 III.    Hydraulic Fluids

         A.      Properties of Fluids

         B.      Maintenance of Fluids

         C.      Keeping Fluids Clean

 IV.     General Maintenance

         A.      Cleanliness

         B.      Cleaning and Flushing Systems

         C.      Preventing Overheating

         D.      Preventing Air-In-Oil Problems

         E.      Checking System before Operation

         F.      Safety Rules

 V.      Diagnosis and Testing of Hydraulic Systems

         A.      Seven Basic Steps

         B.      Testing the Machine

         C.      Trouble Shooting Charts

 VI.     Symbols Used in Fluid Power Diagrams

         A.      Reading Hydraulic Symbol Drawings

         B.      Characteristics of Symbols

         C.      Hydraulic Components and Symbols

 VII.    Safety Rules for Hydraulics

         A.      Specific Hydraulic Hazard Information

         B.      General Safety Information

         C.      Recognizing Safety Information