Unit 3969: Introduction to Motor Vehicle Mechanics

1. Introduction to Motor Vehicle Mechanics

• Overview and history of motor vehicles
• Importance of motor vehicle mechanics in transportation and industry
• Basic principles of motor vehicle operation

2. Engine Fundamentals

• Components of a vehicle engine
  • Cylinder, piston, crankshaft, camshaft
• Internal combustion process
  • Four-stroke cycle: intake, compression, combustion, exhaust
• Types of engines
  • Petrol, diesel, electric hybrid engines
• Key engine parts and their functions

3. Fuel Systems and Ignition Systems

• Fuel systems
  • Carburetors: function and operation
  • Fuel injection systems: types (mechanical, electronic), advantages
• Ignition systems
  • Spark plugs: role and maintenance
  • Ignition coils and distributors
  • Timing and ignition control

4. Cooling and Lubrication Systems

• Cooling system components
  • Coolant, radiator, water pump, thermostat
• Cooling system operation and maintenance
• Lubrication system components
  • Engine oil, oil pump, oil filter
• Importance of lubrication for engine performance and longevity

5. Electrical Systems and Batteries

• Vehicle electrical system overview
• Batteries: types, maintenance, and testing
• Alternators and charging system
• Starters and starting system
• Wiring diagrams: reading and interpretation
• Common electrical issues and troubleshooting

6. Steering and Suspension Systems

• Steering system components
  • Steering wheel, column, rack and pinion, tie rods
• Suspension system components
  • Shocks, struts, springs, control arms
• Function and importance of steering and suspension for vehicle control and comfort

7. Braking Systems

• Types of brakes
  • Disc brakes, drum brakes
• Anti-lock Braking System (ABS): function and benefits
• Brake system components
  • Brake pads, rotors, calipers, master cylinder
• Brake maintenance and safety checks

8. Transmission and Drivetrain

• Transmission types
  • Manual vs automatic transmissions
• Transmission components
  • Clutch, gearbox, torque converter
• Drivetrain components
  • Driveshafts, differentials, axles
• Operation and maintenance of transmission and drivetrain

9. Diagnostic Tools and Techniques

• Overview of diagnostic tools
  • OBD (On-Board Diagnostics) scanners
  • Multimeters
  • Compression testers
• Diagnostic procedures and troubleshooting methodology
• Reading and interpreting fault codes

10. Maintenance and Servicing

• Routine maintenance tasks
  • Oil changes, filter replacements, fluid checks
• Servicing schedules and importance
• Best practices for inspections and preventive maintenance
• Record keeping and service documentation