MTRK 152A: Medium and Heavy Truck Engines Service, Diagnosis, and Repair

• complete ninety-five percent (95%) of Priority 1 (P-1), seventy percent (70%) of Priority 2 (P-2) twenty-five percent (25%) of the Priority 3 (P-3) required National Automotive Technician Education Foundation (NATEF) objectives for Diesel Engines (T2). Please see attached NATEF objectives (pages 39-45) or www.natef.org for the most current objectives.
• Perform proper engine measurements using precision measurement tooling
• Perform valvetrain component removal, replacement and adjustment as per manufacturer recommendations
• Perform engine bottom end disassembly, reassembly and adjustment as per manufacturer recommendations
• Identify and perform procedures for proper front engine component gear timing
• Identify mechanical fuel injection component adjustments and repair
• Identify operation and repair of engine braking systems
• Identify operation and repair of engine subsystems such as intake preheat systems, exhaust gas recirculation systems, turbo chargers and superchargers

1. Engine mechanical related safety
   1. Audible voice commands when working with a helper
   2. Working around machinery in motion
   3. Shop ergonomics
   4. Tool placements
2. Fasteners, seals and gaskets related to engine repair.
   1. Fasteners
      1. Terminology
      2. Selection
      3. Repair
   2. Seals
      1. Terminology
      2. Installation
   3. Gaskets
      1. Terminology
      2. Selection
      3. Application
3. Theory of Operation of Various Engines and Related Systems
   1. Engine block-dry and wet liners
   2. Rotating assembly
   3. Reciprocating assembly
   4. Valve train
   5. Cooling system
   6. Exhaust system
4. Diagnosis, Repair and Service of Engines and Related Systems Using Manufacturer Standards and Service Information
   1. Engine block
   2. Rotating assembly
   3. Reciprocating assembly
   4. Valve train
   5. Cooling system
   6. Exhaust system
5. Engine Assembly Using Manufacturer Procedures and Service Information
   1. Engine block
   2. Rotating assembly
   3. Reciprocating assembly
   4. Valve train
   5. Cooling system
   6. Exhaust system
6. Mechanical fuel system component operation and repair
   1. Mechanical fuel pumps
   2. Fuel distribution systems
   3. Fuel injector types
   4. Fuel injector operation and adjustments
   5. Injector removal and replacement
7. Engine braking systems
   1. Compression release braking systems
   2. Exhaust braking systems
   3. Engine retarders
8. Engine subsystems
   1. Intake preheat systems
   2. Turbochargers
   3. Superchargers
   4. Throttle systems
   5. Exhaust gas recirculation systems

I. Diagnosis, Repair and Service of Engines and Related Systems Using Manufacturer Standards and Service Information

• Engine block
• Rotating assembly
• Reciprocating assembly
• Valve train
• Cooling system
• Exhaust system
• Mechanical fuel injection system

II. Engine Rebuilding Procedures Including Disassembly, Cleaning and Inspection Using Manufacturer Standards and Service Information

• Engine block
• Rotating assembly
• Reciprocating assembly
• Valve train
• Cooling system
• Exhaust system
• Mechanical fuel injection system

III. Engine Assembly Using Manufacturer Procedures and Service Information.

• Engine block
• Rotating assembly
• Reciprocating assembly
• Valve train
• Cooling system

IV. Exhaust System Inspection

• Aftertreatment removal
• Exhaust smoke analysis

V. Power Output Analysis

• Full load operation diagnosis
• Engine power down diagnosis