Diploma in Diesel Mechanic Works (Diesel Machanic)

Course Name:	Diploma in Diesel Mechanic Works (Diesel Machanic)
Course Short Name:	Diesel Mechanic Course
Course Code::	ARJ0168
Course Type:	Diploma
Duration:	1 Year
Eligibility:	10th/12th
Total Subjects:	5

Core Syllabus: Diesel Mechanic Works

The curriculum is typically divided into two semesters (or modules) over one year, with a strong emphasis on Trade Practical (hands-on skills).

1. Fundamentals and Workshop Practices (General Skills)

This initial module sets the foundation for safe and accurate work.

Module Area	Key Topics Covered
Occupational Safety & Health (OSH&E)	Workshop safety, PPE (Personal Protective Equipment), fire fighting (especially oil/fuel fires), first aid, and safe disposal of used oil and hazardous waste.
Tools and Measuring Instruments	Identification, use, and maintenance of hand tools. Precision measurement using Micrometers, Vernier Calipers, Dial Gauges, Feeler Gauges, and specialized engine measuring tools (e.g., cylinder bore gauge).
Basic Fitting & Fastening	Bench work practice (filing, marking, drilling, tapping). Study of threads, fasteners, gaskets, seals, and locking devices.
Welding	Basic practice in Arc Welding and Gas Welding for repair work on non-critical components.
Non-Destructive Testing (NDT)	Introduction to NDT methods (like liquid penetrant testing) to check engine components for cracks without damaging them.
Hydraulics and Pneumatics	Principles of fluid power, identification of components, and tracing simple hydraulic circuits (e.g., in a hydraulic jack or air brake system).

2. Diesel Engine Systems (Specialized Skills)

This forms the core of the course, covering the detailed repair and service of diesel engines.

System	Key Skills Covered (Practical Focus)
Diesel Engine Theory	Principle of the 4-stroke and 2-stroke diesel cycles. Comparison with petrol engines. Introduction to engine components and constructional details (Block, Head, Piston, Crankshaft, Camshaft).
Engine Overhaul & Reassembly	Dismantling, inspection, measurement, and reassembly of the cylinder head, valve train, piston/connecting rod assembly, crankshaft, and flywheel. Checking for wear and tear, and taking clearances.
Diesel Fuel System	Detailed study and service of the Fuel Feed Pump, Fuel Filters, Injectors, and the Fuel Injection Pump (FIP). Introduction to high-pressure modern systems like Common Rail Direct Injection (CRDI) (or Electronic Diesel Control - EDC).
Governors	Understanding the principle and servicing of mechanical and electronic governors that control engine speed and fuel delivery.
Cooling & Lubrication	Servicing the radiator, water pump, thermostat, and cooling fan. Diagnosing cooling system failures. Oil change procedures, understanding lubricants, and troubleshooting oil pressure issues.
Air Intake & Exhaust	Servicing the air filter. Understanding the operation and maintenance of Turbochargers and Superchargers. Basic principles of exhaust gas recirculation (EGR) and emission control.
Diagnosis	Performing engine vacuum tests, compression tests, and basic use of diagnostic scanners for Electronic Diesel Control (EDC) systems.

3. Electrical and Drivetrain Systems

These modules cover the essential support systems of the engine.

Electrical System: Basics of electricity (Ohm's Law), batteries (testing and charging), troubleshooting the Starter Motor and Alternator (Charging System).

Drivetrain (Introduction): Basic knowledge and simple maintenance of the clutch, gearbox (transmission), propeller shaft, and rear axle/differential.

Braking System: Basic knowledge of the hydraulic braking system and the components of an Air Brake System (common in heavy diesel vehicles).

4. Core Engineering and Employability Skills

Subject	Focus
Workshop Calculation & Science	Applied mathematics (area, volume, percentages, speed/velocity/power). Basic physics principles (heat, materials, properties of metals).
Engineering Drawing	Reading and interpreting engineering drawings and blueprints. Drawing orthographic views of simple components. Sketching system diagrams (e.g., fuel injection layout).
Employability Skills	IT literacy, basic English communication, entrepreneurial skills, and workplace ethics.

The final phase often includes Project Work and/or On-the-Job Training (OJT) to apply the learned skills in a real industrial setting.