Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

AURHTB001 Mapping and Delivery Guide
Diagnose and repair heavy vehicle air braking systems

Version 1.0
Issue Date: March 2024


Qualification -
Unit of Competency AURHTB001 - Diagnose and repair heavy vehicle air braking systems
Description
Employability Skills
Learning Outcomes and Application This unit describes the performance outcomes required to diagnose and repair faults in the air braking systems of heavy vehicles. It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation.It applies to those working in the automotive service and repair industry. The air braking systems include those in 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.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

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 vehicle air 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 braking system specifications

two different heavy vehicles with faults in the air braking systems specified in the performance evidence

diagnostic equipment for heavy vehicle air braking systems

Australian Design Rules ADR35 and ADR38

tools, equipment and materials appropriate for repairing and adjusting heavy vehicle air braking systems.

Prerequisites/co-requisites
Competency Field Mechanical - Heavy Vehicle
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities
Slides
PPT
Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Prepare to diagnose and repair air braking system
  • Job requirements are determined from workplace instructions
  • Diagnostic information is sourced and interpreted
  • Diagnostic options are analysed and those most appropriate to the circumstances are selected
  • Hazards associated with the work are identified and risks are managed
  • Diagnostic tools and equipment are selected and checked for serviceability
       
Element: Diagnose air braking system
  • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
  • Faults are identified from diagnostic test results and causes of faults are determined
  • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
       
Element: Repair air braking system
  • Repair information is sourced and interpreted
  • Repair options are analysed and those most appropriate to the circumstances are selected
  • Repair tools, equipment and materials are selected and checked
  • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
  • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
       
Element: Complete work processes
  • Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use
  • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • Tools and equipment are checked and stored according to workplace procedures
  • Workplace documentation is processed according to workplace procedures
       
Element: Prepare to diagnose and repair air braking system
  • Job requirements are determined from workplace instructions
  • Diagnostic information is sourced and interpreted
  • Diagnostic options are analysed and those most appropriate to the circumstances are selected
  • Hazards associated with the work are identified and risks are managed
  • Diagnostic tools and equipment are selected and checked for serviceability
       
Element: Diagnose air braking system
  • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
  • Faults are identified from diagnostic test results and causes of faults are determined
  • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
       
Element: Repair air braking system
  • Repair information is sourced and interpreted
  • Repair options are analysed and those most appropriate to the circumstances are selected
  • Repair tools, equipment and materials are selected and checked
  • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
  • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
       
Element: Complete work processes
  • Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use
  • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • Tools and equipment are checked and stored according to workplace procedures
  • Workplace documentation is processed according to workplace procedures
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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 diagnose and repair air braking system

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic 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 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose air braking system

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements

2.2 Faults are identified from diagnostic test results and causes of faults are determined

2.3 Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures

3. Repair air braking system

3.1 Repair information is sourced and interpreted

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

3.3 Repair tools, equipment and materials are selected and checked

3.4 Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems

3.5 Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified

4. Complete work processes

4.1 Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use

4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

4.3 Tools and equipment are checked and stored according to workplace procedures

4.4 Workplace documentation is processed according to workplace procedures

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:

diagnose and repair a fault in three heavy vehicle air braking systems as follows:

one disc braking system, in which the work must involve removing and refitting or replacing the brake actuators, disc pads and disc rotors

one drum braking system, in which the work must involve removing and refitting or replacing the brake actuators, brake shoes and drums

one air braking system, in which the work must involve removing and refitting or replacing the following:

air compressor, delivery and storage components

slack adjusters

pneumatic and electronic control circuits and valves.

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing air braking systems, including procedures for:

working safely with stored energy in springs and high air pressure systems

managing and controlling brake dust and brake fluids

removing and refitting wheel assemblies

environmental requirements, including procedures for trapping, storing and disposing of hazardous materials and substances released from braking systems, including brake dust and fibres

Australian Design Rules ADR35 and ADR38 relating to repairing heavy vehicle brakes

operating principles of air braking systems and associated components, including:

levers

friction

pneumatics

electronics

application, purpose and operation of heavy vehicle air braking systems and components, including:

disc braking systems

drum braking systems

air compressors, air storage, air dryers and valves

brake actuators

foot valves

air control valves

manual and automatic slack adjusters

trailer brake valves

pneumatic and electronic control circuits and valves

diagnostic testing procedures for air braking systems, including:

air control system testing

air brake component inspection and evaluation

brake system stationary and mobile performance tests

repair procedures for air braking system components, including:

wheel end components, including:

disc braking systems

drum braking systems

air compressors, air storage, air dryers and valves

brake actuators

foot valves

manual and automatic slack adjusters

trailer brake valves

pneumatic and electronic control circuits and valves

post-repair testing procedures for air braking systems, including stationary and mobile performance tests.


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)


Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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 diagnose and repair air braking system

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic 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 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose air braking system

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements

2.2 Faults are identified from diagnostic test results and causes of faults are determined

2.3 Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures

3. Repair air braking system

3.1 Repair information is sourced and interpreted

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

3.3 Repair tools, equipment and materials are selected and checked

3.4 Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems

3.5 Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified

4. Complete work processes

4.1 Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use

4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

4.3 Tools and equipment are checked and stored according to workplace procedures

4.4 Workplace documentation is processed according to workplace procedures

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.

Diagnostic tests must include:

friction material wear

drum brake component serviceability

disc brake component serviceability

air pressure testing.

Safety and environmental requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for:

working safely with stored energy in springs and high air pressure systems

managing and controlling brake dust and brake fluids

removing and refitting wheel assemblies

environmental requirements, including procedures for trapping, storing and disposing of hazardous materials and substances released from braking systems, including brake dust and fibres.

Repair information must include procedures relating to:

removing, replacing and adjusting system components

dismantling, repairing, reassembling and adjusting systems.

Post-repair testing must include:

stall testing of service, park, emergency and secondary brakes

dynamic brake performance testing using approved methods or equipment.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Job requirements are determined from workplace instructions 
Diagnostic information is sourced and interpreted 
Diagnostic options are analysed and those most appropriate to the circumstances are selected 
Hazards associated with the work are identified and risks are managed 
Diagnostic tools and equipment are selected and checked for serviceability 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures 
Repair information is sourced and interpreted 
Repair options are analysed and those most appropriate to the circumstances are selected 
Repair tools, equipment and materials are selected and checked 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems 
Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified 
Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use 
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 
Tools and equipment are checked and stored according to workplace procedures 
Workplace documentation is processed according to workplace procedures 
Job requirements are determined from workplace instructions 
Diagnostic information is sourced and interpreted 
Diagnostic options are analysed and those most appropriate to the circumstances are selected 
Hazards associated with the work are identified and risks are managed 
Diagnostic tools and equipment are selected and checked for serviceability 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements 
Faults are identified from diagnostic test results and causes of faults are determined 
Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures 
Repair information is sourced and interpreted 
Repair options are analysed and those most appropriate to the circumstances are selected 
Repair tools, equipment and materials are selected and checked 
Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems 
Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified 
Final inspection is made to ensure work is to workplace expectations and vehicle is presented ready for use 
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected 
Tools and equipment are checked and stored according to workplace procedures 
Workplace documentation is processed according to workplace procedures 

Forms

Assessment Cover Sheet

AURHTB001 - Diagnose and repair heavy vehicle air braking systems
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:


Assessment Record Sheet

AURHTB001 - Diagnose and repair heavy vehicle air braking systems

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: