Application

This unit of competency defines the skills and knowledge required to assess the operation, test and repair starting systems requiring the use of amps, voltage and resistance (AVR) test equipment.

Where soldering of wires/connections is required unit MEM05001 Perform manual soldering/desoldering - electrical/electronic components should also be selected.

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, diagrams and service documents to diagnose and rectify low voltage starting systems

identifying the construction of electric starter motors

testing the cranking motor drive mechanism

dismantling and assembling given starter motors in accordance with manufacturer recommendations/procedures and specifications using appropriate tools, equipment and techniques

checking operation of given starter motors for electrical faults, including testing solenoids, relays and over-temperature devices, operation and conformance of the engagement mechanism, excessive voltage drops and all circuit connections for compliance with specifications

testing the repaired/overhauled starter motor to ensure that the locked armature current, voltage and torque for compliance to specifications.

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)

concepts of magnetism, electromagnetism and induced voltage

principles of operation of electric motors

components and functions of common starting motors

effect of multi-pole/winding/shunt wiring arrangements on starting motor performance

tests and test procedures that can be used to check the performance of the cranking motor drive mechanism

concept of ‘locked armature’ in terms of current, voltage and torque and specifications

tools and equipment used to test components and systems

procedures for:

determining locked armature current, voltage and torque

testing solenoids, relays and over-temperature devices for correct operation and operational specifications

testing and adjusting starter engagement mechanisms and specifications

checking starting systems for excessive voltage drops

manufacturers’ recommended dismantling/assembling procedures, tools and equipment for given starting motors

range of electrical tests that can be applied to starting motors and the purpose of these tests

equipment and procedures required to carry out the tests

function of solenoids, relays and over-temperature devices

effect and causes of voltage drops on starting system operation/performance

effect of loose, poorly joined and/or inappropriate insulation on starting motor performance/operation and specifications of all circuit connections.

Assessment Conditions

Assessors must:

have vocational competency in diagnosing and rectifying low voltage starting systems 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': 'MEM18055', 'title': 'Dismantle, replace and assemble engineering components'}
• {'code': 'MEM27006', 'title': 'Diagnose and rectify batteries, low voltage sensors and circuits'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

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