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Heavy Duty Diesel Engines Level I

HDD 112

Heavy Duty Diesel Engines Level I

HDD 112

Course Description

Corequisites: HDD 106 and HDD 108. Introduces student to inspection of heavy duty diesel engines. Practices NATEF tasks related to heavy duty diesel engines. (15-50)

Outcomes and Objectives

Complete NATEF tasks related to General Heavy Duty Diesel Engine as listed below.

Objectives:

  • Inspect fuel, oil, Diesel Exhaust Fluid (DEF) and coolant levels, and condition; determine needed action.
  • Identify engine fuel, oil, coolant, air, and other leaks; determine needed action.
  • Listen for engine noises; determine needed action.
  • Observe engine exhaust smoke color and quantity; determine needed action.
  • Identify engine vibration problems.
  • Check and record electronic diagnostic codes.

Complete NATEF tasks related to Heavy Duty Diesel Engine Block as listed below.

Objectives:

  • Inspect crankshaft vibration damper; determine needed action.
  • Inspect flywheel/flexplate (including ring gear) and mounting surfaces for cracks and wear; measure runout; determine needed action.

Complete NATEF tasks related to Heavy Duty Diesel Engine Lubrication Systems as listed below.

Objectives:

  • Test engine oil pressure and check operation of pressure sensor, gauge, and/or sending unit; test engine oil temperature and check operation of temperature sensor; determine needed action.
  • Check engine oil level, condition, and consumption; determine needed action.
  • Inspect, clean, and test oil cooler and components; determine needed action.
  • Inspect turbocharger lubrication systems; determine needed action.
  • Determine proper lubricant and perform oil and filter change.

Complete NATEF tasks related to Heavy Duty Diesel Engine Cooling System as listed below.

Objectives:

  • Check engine coolant type, level, condition, and consumption; test coolant for freeze protection and additive package concentration; determine needed action.
  • Inspect coolant conditioner/filter assembly for leaks; inspect valves, lines, and fittings; replace as needed.
  • Inspect, clean, and pressure test radiator. Pressure test cap, tank(s), and recovery systems; determine needed action.
  • Inspect thermostatic cooling fan system (hydraulic, pneumatic, and electronic) and fan shroud; replace as needed.
  • Inspect turbo charger cooling systems; determine needed action.

Complete NATEF tasks related to Heavy Duty Diesel Engine Fuel System as listed below.

Objectives:

  • Fuel Supply System
  • Electronic Fuel Management System