This unit applies to diagnostics and maintenance, repair, adjustment and commissioning of mechanical drives and mechanical transmission assemblies.

This unit should not be selected where either Unit MEM18042C (Diagnose and rectify manual transmissions), or Unit MEM18043C (Diagnose and rectify automatic transmissions) or Unit MEM18044C (Diagnose and rectify drive line and final drives) are also selected.

Band: A

Unit Weight: 4

Path 1

MEM09002B

Interpret technical drawing

MEM12023A

Perform engineering measurements

MEM18001C

Use hand tools

MEM18002B

Use power tools/hand held operations

MEM18003C

Use tools for precision work

MEM18006C

Repair and fit engineering components

MEM18009B

Perform levelling and alignment of machines and engineering components

MEM18055B

Dismantle, replace and assemble engineering components

ELEMENT

PERFORMANCE CRITERIA

1. Undertake maintenance checks of mechanical drives and mechanical transmission components

1.1. Principles of mechanical drives and mechanical transmission components are understood.

1.2. The function of the main parts of the designated mechanical drive/transmission assembly is understood.

1.3. Appropriate maintenance principles, techniques, tools and equipment, mechanical drive/transmission components are used to check for wear, distortion, tensions, misalignment, fatigue, lubrication, slackness, tooth wear, breakages and other related malfunctions.

1.4. Assembly requiring further diagnosis, repair or adjustment is identified and findings are documented.

2. Adjust mechanical drives and transmission assemblies

2.1. Adjustment requirements are determined.

2.2. A suitable adjustment method is determined from manufacturers' instruction sheets, standard workshop manuals/procedures or other means.

2.3. Adjustment tools and equipment are selected according to the type of assembly being serviced.

2.4. Appropriate maintenance principles, techniques, tools and equipment are used, and drives/transmission components are tensioned, aligned balanced or adjusted to manufacturers'/site specifications according to safe workshop practices.

2.5. Drive/transmission assembly is checked after adjustment for correct operation or identified for further diagnosis or repair.

2.6. Service report is completed.

2.7. Further diagnosis or repair requirements are actioned.

3. Diagnose faults

3.1. Service reports are read and visual and sensory inspection of the drive/transmission assembly is undertaken.

3.2. Given manufacturers' specifications, and where applicable, diagnostic equipment drive/transmission assembly is tested using sound maintenance principles and procedures.

3.3. Faults are localised at the component level and identified for repair or replacement.

3.4. Fault causes are analysed and preventative measures to avoid re-occurrence are developed, documented and actioned by appropriate means.

3.5. Requirements for repair or replacement are actioned.

4. Repair mechanical drives/transmission assemblies

4.1. Service reports are read and visual and sensory inspection of the drive/transmission assembly is undertaken.

4.2. Task requirements are ascertained.

4.3. Tools and equipment are selected according to the type of assembly being serviced.

4.4. Mechanical drive/transmission assembly is dismantled using appropriate maintenance principles, techniques, tools, equipment and safe workshop practices.

4.5. Serviceable items are repaired using appropriate maintenance procedures according to manufacturers' specifications and standard workshop practices.

4.6. Standard replaceable items are selected and obtained using manufacturers' catalogues, spare parts lists, engineering specifications.

4.7. Component parts are refitted to mechanical drive/transmission assembly using sound maintenance principles, techniques, tools and equipment in accordance with manufacturers'/site specifications.

5. Final adjustment and commissioning

5.1. Using applicable maintenance principles and procedures, drive/transmission components are tensioned, balanced, aligned or adjusted to suit specifications and operational requirements.

5.2. Drive/transmission assembly is checked after adjustment and operational performance is analysed.

5.3. Assembly is commissioned to specifications.

5.4. Service report is completed.

Required skills

Look for evidence that confirms skills in:

locating, reading and interpreting information on written job instructions, specifications, manufacturers' instructions, standard workshop manuals/procedures, drawings, charts, lists and other reference documentation

checking and clarifying task-related information

interpreting manufacturers' catalogues or engineering specifications

undertaking diagnostic and testing

analysing operational performance

planning and sequencing operations

completing proformas, standard workplace forms and short reports using relevant terminology

checking for conformance to specifications

measuring components to specified tolerances

undertaking calculations for determining cutting parameters and checking tolerances

undertaking numerical operations and engineering calculations/formulae within the scope of this unit

following verbal instructions

orally reporting information

Required knowledge

Look for evidence that confirms knowledge of:

uses and characteristics of lubricants

principles of operation of a range of mechanical drives and transmissions

techniques, tools and equipment to measure components

common malfunctions in mechanical drives, transmissions and their components

procedures for checking and adjusting mechanical drives, transmissions and their components

preventative measures that can be undertaken to avoid recurrence of the fault/failure

any applicable industry standards, national/Australian standards, NOHSC guidelines, State/Territory regulatory codes of practice/standards

use and application of personal protective equipment

safe work practices and procedures

hazards and control measures associated with maintaining and repairing mechanical drives and mechanical transmission assemblies

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to diagnose faults and repair drives and transmission assemblies and undertake final adjustment and commissioning. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with maintaining/repairing mechanical drives and mechanical transmission assemblies or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Mechanical drive/transmission

Worm and worm wheel, line shafts, plumber blocks, pulleys, sprockets, belts, taper bush assemblies, roller chains, chain drives, mechanical and hydraulic couplings, compression couplings, disc type flexible couplings, spider type, chain couplings, universal joints, bevel gearing, rack and pinion gearing, dog toothed clutches, cone type clutches, expanding shoe type clutches, friction/plate type clutches, centrifugal clutches, toggle action linkages, magnetic clutches, sprag clutches, band type brakes and other associated drive components.

Service reports

According to workplace procedures

Sensory inspection

Vibration, heat, smell, sound, sight

Commissioned

Confirming readiness for use or return to service

Unit sector

Maintenance and diagnostics

This unit contains employability skills.