Application

This unit of competency defines the skills and knowledge required to compression test and tune up the engine.

It applies to tune up procedures and evaluation of engine performance on compression ignition engines.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

What You'll Learn

Assessment Requirements

Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

identifying and interpreting specifications, charts, lists, drawings and service documents for tuning diesel engines

removing injectors from each cylinder, isolating fuel system and fitting appropriate adaptors to each of the cylinders

obtaining, recording and correcting compression readings for adaptor used

determining firing pressures and adjusting to specifications

performing tune up of diesel engine using appropriate tools, equipment and techniques.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

safe work practices and procedures and use of personal protective equipment (PPE)

procedures for:

removing injectors from cylinders and reasons for isolating the fuel system

fitting adaptors to the cylinders

compression testing diesel engines and recording compression readings

comparing the compression readings with specifications and identifying any deviations

adjusting firing pressures

starting, operating, loading and shutting down diesel engines

recording test results

determining exhaust smoke density and equipment and techniques

adjusting valve clearances and/or timing

adjusting injector pump and injector timing

adjusting the governor rack travel, torque spring load limit, over speed trips, aneroid or fuel ratio control

adjusting injector opening pressure

appropriate adaptors and reasons for using adaptors

likely causes of any detected deviations from specification

corrections required for compression readings to take account of the adaptor used

test equipment and procedures to be used in the tuning of diesel engines

manufacturer’s recommended tests and reasons for conducting the tests

timing and pressures to be achieved

governor specifications.

Assessment Conditions

Assessors must:

have vocational competency in tuning diesel engines at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires

Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions. This must cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills

Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Foundation Skills

• text: This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Prerequisite Units

• {'code': 'MEM09002', 'title': 'Interpret technical drawing'}
• {'code': 'MEM11011', 'title': 'Undertake manual handling'}
• {'code': 'MEM12023', 'title': 'Perform engineering measurements'}
• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}
• {'code': 'MEM18001', 'title': 'Use hand tools'}
• {'code': 'MEM18002', 'title': 'Use power tools/hand held operations'}
• {'code': 'MEM27002', 'title': 'Test and repair compression ignition systems'}
• {'code': 'MEM18055', 'title': 'Dismantle, replace and assemble engineering components'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

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