Automotive Mechanics Level II: Engine Systems

Automotive Mechanics NTQF Level II, Learning Guide #3

• Unit of Competence: Perform minor engine electrical systems service
• Module Title: Performing minor engine electrical systems service
• LG Code: EIS AUM2 M02 LO3-01
• TTLM Code: EIS AUM2 M04 0322
• Unit 3: Replace/Reassemble System Assemblies

Instruction Sheet LG3: Replace/Reassemble System Assemblies

• Topic: Replace/Reassemble System Assemblies
• Carry out minor adjustments: Includes checking cooling system hoses for leaks or damage, inspecting radiator for leaks/dirt buildup, and checking coolant level
• Assembling system components: This involves putting components back together.
• Conducting post-service/pre-delivery check: Includes reviewing systems, confirming components were installed/replaced correctly, and ensuring that the vehicle meets the specifications
• Learning Activities: Read objectives, review 'Information Sheets' (pages 2), complete 'Self-check 3' (page 71), and receive feedback from instructor on work quality.

Replace/Reassemble System Assemblies, Unit Three

• Carrying out minor adjustments:

  • Inspect cooling system hoses for leaks
  • Check radiator for leaks and buildup of dirt/debris
  • Verify coolant level (should be between low and full marks)
  • Use correct coolant type
  • Flush coolant system if it's contaminated

• Coolant Condition:

  • Use coolant hydrometer to check antifreeze percentage
  • Check coolant color (should be green or orange, not rusty or cloudy)

• Drive Belts:

  • V-belts and V-ribbed belts used for various functions
  • Drive belts wear over time and may cause slippage
  • Inspection needed to check for damage: wear, glazing, tears, splits, or oil soaking
  • Pulleys should be inspected for rust, oil, or damage and aligned properly

• Belt Tension:

  • Inspect belt tension regularly (midway through the largest span)
  • Excessive belt tension issues can damage the associated components.

• Using service information: Consult service manuals for correct belt tightening procedures and specifications.

Assembling System Components

• System Components: Connect the injector nozzle, cooling system, exhaust, and fuel pipes correctly.
• Thermostat: Connect fuel pipe and electrical lead.
• Additional Connections: Connect air filter, induction/exhaust manifold and cooling system properly.

Conducting Post-Service/Pre-Delivery Check

• Documentation: Use documentation to record organization's development & acquisition of operating environments & systems.
• Technician Access: Provide technicians with operation manuals for effective maintenance.
• Automated Documentation: Utilize software to improve maintainability & accuracy

Final Inspection

• Consumer Expectations: Consumers expect vehicles to be in excellent working order upon return.
• Inspection Criteria: Ensure that all safety components are correctly positioned and working properly and meets expected specifications.
• Documentation: Maintain records of all service work and any necessary repairs

Completing and Delivering Report/Final Procedures

• Report Delivery: Technicians deliver completed reports to the appropriate personnel.
• Documentation Procedures: Use standardized records, concise summaries, flow diagrams, and checklist items for maintenance and transparency.

Test your knowledge on performing minor engine electrical systems service in Automotive Mechanics NTQF Level II. This quiz covers essential skills such as replacing and reassembling system assemblies, conducting post-service checks, and ensuring vehicles meet specifications.