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Unit of competency details

AURHTB004 - Overhaul air braking system components (Release 1)

Summary

Usage recommendation:
Current
Mapping:
MappingNotesDate
Supersedes and is equivalent to AURHTB4004 - Overhaul air braking systems and components 13/Apr/2016

Release Status:
Current
Releases:
ReleaseRelease date
1 1 (this release) 14/Apr/2016


Training packages that include this unit

Classifications

SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030503 Vehicle Mechanics  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030503 Vehicle Mechanics  09/Aug/2016 
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Unit Of competency

Modification History

Release 

Comment 

Release 1 

New unit of competency.

Application

This unit describes the performance outcomes required to return air braking system components to original manufacturer tolerances and clearances. It involves preparing for the task, dismantling and evaluating the braking system components, carrying out the overhaul procedures, reassembling and testing the braking system components, and completing workplace processes and documentation.

It applies to those working in the automotive service and repair industry. The air braking systems include those of agricultural machinery, heavy commercial vehicles or mobile plant machinery.

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

Competency Field

Mechanical - Heavy Vehicle

Unit Sector

Technical - Brakes

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. Prepare to dismantle air braking system components

1.1 Job requirements are determined from workplace instructions

1.2 Dismantling information is sourced and interpreted

1.3 Dismantling options are analysed and those most appropriate to the circumstances are selected

1.4 Hazards associated with the work are identified and risks are managed

1.5 Dismantling tools and equipment are selected and checked for serviceability

2. Dismantle and evaluate air braking system components

2.1 Braking system components are dismantled in a logical sequence according to manufacturer and workplace procedures, and safety and environmental requirements , and without causing unnecessary damage to components or systems

2.2 Components are cleaned for evaluation according to workplace procedures and safety and environmental requirements

2.3 Components are measured and compared with manufacturer specifications and serviceability is determined

2.4 Component repair method is determined

2.5 Unserviceable parts are identified and replacement parts sourced

3. Carry out overhaul

3.1 Overhaul information is sourced and interpreted

3.2 Overhaul options are analysed and those most appropriate to the circumstances are selected

3.3 Overhaul tools and equipment are selected and checked for serviceability

3.4 Components are machined, repaired and replaced as required, and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems

4. Assemble components

4.1 Air braking system components are assembled according to manufacturer specifications, workplace procedures, and safety and environmental requirements

4.2 Tolerances and clearances are measured against manufacturer specifications and necessary adjustments are made

4.3 Assembly of air braking system components is completed within workplace timeframes and without causing damage to other components or systems

4.4 Post-assembly testing is carried out according to workplace procedures and safety and environmental requirements, and any problems detected as having been introduced during the assembly process are rectified

5. Complete work processes

5.1 Final inspection is made to ensure work is to workplace expectations and air braking system components are presented ready for use or storage

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

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:

  • locate sources of information for air braking systems efficiently.

Reading skills to:

  • interpret and assess information from manufacturer and workshop literature when seeking air braking system specifications and procedures.

Writing skills to:

  • legibly and accurately fill out workplace documentation when reporting diagnostic findings, making repair recommendations, and recording parts and material used.

Oral communication skills to:

  • clarify instructions, report evaluation findings and make overhaul recommendations.

Numeracy skills to:

  • measure air braking system components and use basic mathematical operations, including addition, subtraction, multiplication and division, to calculate distances, areas, volumes, tolerances and deviations from manufacturer specifications.

Planning and organising skills to:

  • plan own work requirements and prioritise and sequence actions to achieve required outcomes and ensure tasks are completed within workplace timeframes.

Technology skills to:

  • use precision measuring equipment, such as vernier calipers and micrometers
  • use specialised air braking system component overhaul equipment, such as brake discs and drum lathes.

Range of Conditions

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:
  • operating specialised air braking system component overhaul tools, equipment and machinery
  • using chemicals and toxic substances
  • operating manual and mechanical lifting equipment
  • working with stored energy
  • environmental requirements, including procedures for trapping, storing and disposing of oils and fluids released from air braking systems.

Unit Mapping Information

Equivalent to AURHTB4004 Overhaul air braking systems and components

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

 

Assessment requirements

Modification History

Release 

Comment 

Release 1 

New unit of competency.

Performance Evidence

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:

  • overhaul the following air braking system components:
  • two different wheel end disc and drum brake components
  • two different air system components.

Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

  • workplace health and safety (WHS) and occupational health and safety (OHS) requirements relating to overhauling air braking system components, including procedures for:
  • operating specialised air braking system component overhaul tools, equipment and machinery
  • using chemicals and toxic substances
  • operating manual and mechanical lifting equipment
  • working with stored energy
  • environmental requirements, including procedures for trapping, storing and disposing of oils and fluids released from air braking systems
  • types, characteristics and operating principles of air braking systems and associated components
  • air braking system overhaul procedures, including:
  • methods for cleaning and preparing braking system components for overhaul
  • braking system component dismantling procedures
  • braking system component inspection, measuring and evaluation procedures, including methods for measuring and calculating tolerances and clearances
  • braking system component repair and adjustment procedures, including:
  • brake actuators
  • air compressors
  • air storage and valves
  • disc and drum wheel end components
  • slack adjusters
  • procedures for tolerance measuring and calculating and adjusting components
  • post-overhaul testing procedures for braking system components.

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 air braking systems and components 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 air braking system and component specifications
  • air braking system components specified in the performance evidence and requiring overhaul
  • tools, equipment and materials appropriate for overhauling and adjusting air braking system components.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1