Application
This unit describes the performance outcomes required to analyse and evaluate faults in heavy commercial vehicle braking systems in order to initiate action to sustain, vary or enhance performance. It involves identifying, evaluating, selecting, justifying and documenting the most appropriate rectification method or variation to the rectification method. The unit includes the analysis of multi-system and intermittent faults which may be caused by operating in adverse conditions.
It applies to those working in the automotive service and repair industry. The braking systems include those of heavy commercial vehicles and heavy trailers. This unit does not apply to agricultural machinery or mobile plant machinery.
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
Elements and Performance Criteria
Elements Elements describe the essential outcomes. | Performance Criteria Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section. |
1. Identify and confirm the work requirement | 1.1 Objective of the analysis and evaluation is determined from workplace instructions 1.2 Specifications for heavy commercial vehicle braking system are sourced and interpreted 1.3 System faults, deficiencies or discrepancies are identified and confirmed 1.4 Hazards associated with the work are identified and risks are managed according to workplace procedures and safety and environmental requirements |
2. Prepare for analysis and evaluation | 2.1 Evaluation criteria are developed or adopted to meet the objective of the analysis and evaluation 2.2 Analytical and evaluative methodology is developed or identified from technical information 2.3 Testing equipment is prepared according to manufacturer specifications and workplace procedures 2.4 Tools and materials required to support the diagnostic procedure are identified, selected and prepared for use 2.5 Braking system and components are prepared for the diagnostic process |
3. Carry out failure analysis | 3.1 Selected analytical and evaluative methodology is followed according to manufacturer specifications and workplace procedures 3.2 Tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements 3.3 Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes 3.4 Analytical findings and results are assessed against evaluation criteria 3.5 Valid conclusions are drawn from available evidence and documented according to workplace requirements |
4. Make recommendations | 4.1 Options for responding to the objective are determined from further research of technical support information 4.2 Rectification method is selected from an analysis of the options, operating conditions, regulatory requirements, Australian Design Rules, and financial implications 4.3 Report is prepared specifying analysis and evaluation process, and detailing and justifying rectification method or variation to the rectification method |
5. Complete work processes | 5.1 Final inspection is made to ensure work is to workplace expectations 5.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 5.3 Tools and equipment are checked and stored according to workplace procedures 5.4 Workplace documentation is processed according to workplace procedures |
Evidence of Performance
Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:
analyse and evaluate a fault in the braking systems of three different heavy commercial vehicles
the above faults must be in two of the following braking systems:
pneumatic system
air over hydraulic system
hydraulic system
electronic system
auxiliary braking system.
Evidence of Knowledge
Individuals must be able to demonstrate knowledge of:
work health and safety (WHS) and occupational health and safety (OHS) requirements relating to analysing and evaluating faults in heavy commercial vehicle braking systems, including procedures for:
handling and controlling brake dust and brake fluids
working with stored energy in springs, air springs, torsion bars and air storage
environmental requirements, including procedures for trapping, storing and disposing of brake dust and brake fluid released from braking systems
principles and processes involved in planning and implementing analysis and evaluation of braking system faults
design and planning of diagnostic procedures of heavy commercial vehicle braking systems, including procedures for diagnosing:
hydraulic faults
mechanical faults
pneumatic faults
electrical faults
types, functions, operation and limitations of the following systems and components:
foundation brakes
friction materials
anti-lock braking system (ABS)
electronic braking system (EBS)
pneumatic braking system
pneumatic and electronic control circuits and valves
hydraulic braking system
air over hydraulic braking system
heavy trailer braking system
auxiliary braking systems (compression and transmission retarders)
testing procedures for heavy commercial vehicle braking systems, including:
brake timing and balancing
air supply performance
vehicle stopping distance
types, functions, operation and limitations of diagnostic testing equipment required to analyse and evaluate faults in braking systems
procedures for documenting and reporting the analysis and evaluation process required to analyse and evaluate faults in braking systems
requirements of Australian Design Rules (ADRs) relating to heavy commercial vehicle braking systems.
Assessment Conditions
Assessors must satisfy NVR/AQTF assessor requirements.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the heavy commercial vehicle braking systems that they have worked on, e.g. repair orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
automotive repair workplace or simulated workplace
workplace instructions
manufacturer heavy commercial vehicle braking system specifications
three different heavy commercial vehicles with faults in the braking systems specified in the performance evidence
diagnostic equipment for heavy commercial vehicle braking systems
tools, equipment and materials appropriate for analysing and evaluating heavy commercial vehicle braking systems.
Foundation Skills
This section describes those language, literacy, numeracy and employment skills that are essential to performance and are not explicit in the performance criteria.
Skills | Description |
Learning skills to: | apply learning and processes to different situations. |
Reading skills to: | research, organise and interpret technical information relating to heavy commercial vehicle braking systems. |
Writing skills to: | legibly and accurately fill out workplace documentation when reporting failure analysis findings document and complete reports. |
Numeracy skills to: | use mathematical ideas and techniques to complete measurements, calculate analytical requirements, calibrate testing equipment and present analytical results. |
Planning and organising skills to: | plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed within workplace timeframes. |
Technology skills to: | use specialised heavy commercial vehicle braking system diagnostic equipment. |
Range Statement
This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.
Safety and environmental requirements must include: | work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: handling and controlling brake dust and brake fluids working with stored energy in springs, air springs, torsion bars and air storage environmental requirements, including procedures for trapping, storing and disposing of brake dust and brake fluid released from braking systems. |
Analytical and evaluative methodology must include: | diagnostic process, sequence, tests and testing equipment. |
Sectors
Technical - Brakes
Competency Field
Mechanical - Heavy Vehicle