STANDARD COMPETENCIES:

 

 

 1. Perform air intake system restriction and leakage tests; determine needed action.

 2. Perform intake manifold pressure (boost) test; determine needed action.

 3. Perform exhaust back pressure; determine needed action.

 4. Inspect turbocharger(s), wastegate, and piping systems; determine needed action.

 5. Inspect turbocharger(s) (variable ratio/geometry VGT), pneumatic, hydraulic, electronic controls, and actuators.

 6. Check air induction system: piping, hoses, clamps, and mounting, service or replace air filter as needed.

 7. Remove and reinstall turbocharger/waste gate assembly.

 8. Inspect intake manifold, gaskets, and connections; replace as needed.

 9. Inspect, clean, and test charge air cooler assemblies; replace as needed.

 10. Inspect exhaust manifold, piping, mufflers, and mounting hardware; repair or replace as needed.

 11. Inspect exhaust after treatment devices; determine necessary action.

 12. Inspect and test preheater/inlet air heater, or glow plug system and controls; perform needed action.

 13. Inspect and test exhaust gas recirculation (EGR) system including EGR valve, cooler, piping, filter, electronic

     sensors, controls, and wiring; determine needed action.

 14. Inspect diesel exhaust fluid (DEF) system, to include tanks, lines, gauge pump, and filter.

 15. Inspect selective catalyst reduction (SCR) system; including diesel exhaust fluid (DEF) for proper levels, leaks, mounting and connections.

 TOPICAL OUTLINE:

 

 I.      Induction, Exhaust and Turbocharger System Principles

         A.      Air Cleaner Function

         B.      Precleaners

         C.      Dry Type Air Cleaners

         D.      Oil Bath Air Cleaners

         E.      Turbocharger  and Blower Functions

         F.      Turbocharger Operation

         G.      Air Shutdown Valve

         H.      Two-Stroke Blower Design

         I.      Intercoolers and Aftercoolers

 II.     Induction, Exhaust and Turbocharger System Service

         A.      Diagnosis

         B.      Turbocharger Service

         C.      Turbocharger Overhaul

         D.      Blower Service (Two-Stroke-Cycle Engine

         E.      Dry-Type Air Cleaner Service

         F.      Oil Bath Cleaner Service

         G.      Cleaning the Dry Element