Unit of competency Outline
Information current as of
20/10/2026 9:31 AM AWST
20/10/2026 9:31 AM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Service and repair trailers in excess of 4.5 tonnes
Service and repair trailers in excess of 4.5 tonnes
Unit of competency
National Code
AURHTA3002
AURHTA3002
State Code
WF135
WF135
TGA Status
Deleted
Deleted
DTWD Status
Deleted
Deleted
State Implementation and Classification
Approved Date
08/07/2013
Original Release Date
17/01/2013
Nominal Hours
20
Field of Education
030503 - Vehicle Mechanics
Description
This unit of competency describes the skills and knowledge required to service and repair load carrying trailers without motive power, with a gross trailer mass rating (GTMR) or an aggregate trailer mass (ATM) over 4.5 tonnes and designed to be hauled by another vehicle.It requires the ability to identify and confirm work requirements, to use technical skills to service, repair and/or maintain trailers over 4.5 tonnes and to complete the work finalisation processes. Licensing, legislative, regulatory or certification requirements may apply to this unit in some jurisdictions. Users are advised to check with the relevant regulatory authority.
General notes
N/A
Elements and Performance Criteria
1. Prepare for work
- 1.1. Confirm nature and scope of work to be carried out
- 1.2. Locate workplace health and safety (WHS) and workplace environmental and sustainable procedures and practices applicable to the work
- 1.3. Source service procedures and relevant workshop manuals and manufacturer information
- 1.4. Access and interpret state and territory regulations and requirements
- 1.5. Check and prepare tools, equipment and materials
- 1.6. Decide service and/or repair method in accordance with WHS, environmental and industry regulations and guidelines, and enterprise procedures
- 1.7. Set up work area
2. Adjust trailer to suit individual applications
- 2.1. Identify trailer application
- 2.2. Measure to ascertain ride height in preparation for trailer adjustment
- 2.3. Use methods, equipment and tolerances suitable to the trailer application and in accordance with manufacturer specifications
- 2.4. Carry out adjustment in accordance with manufacturer and component supplier specifications, and WHS and workplace environmental and sustainable procedures and practices
3. Test, service, repair and/or maintain trailer
- 3.1. Select appropriate diagnostic test
- 3.2. Undertake testing of trailer
- 3.3. Identify service, repair and/or maintenance requirements
- 3.4. Carry out service, repair and/or maintenance using methods, equipment and tolerances suitable to the trailer application in accordance with manufacturer specifications, WHS, and workplace environmental and sustainable procedures and practices
4. Verify system
- 4.1. Undertake visual and audible tests
- 4.2. Repair and eliminate identified issues
- 4.3. Organise for trailer to be test driven
5. Clean up work area and maintain equipment
- 5.1. Clean and inspect equipment and tooling according to workplace requirements
- 5.2. Tag unserviceable equipment and faults identified in accordance with workplace requirements
- 5.3. Finalise and process work completion documentation, update customer and warranty information and give to appropriate persons, as required
- 5.4. Clean work area, dispose of waste and scrap, and store re-useable material, tools and equipment in accordance with workplace procedures
RANGE STATEMENT
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.
Trailers with a GTMR or ATM of over 4.5 tonnes
Trailers with a GTMR or ATM over 4.5 tonnes may include:
box trailers (skeleton type)
heavy goods trailers
low loaders
farm trailers
multiple car carriers
mobile machinery/equipment
cane bin trailers
dolly trailers
semi-trailers
timber jinkers
bus semi-trailers
dog trailers
pig trailers
semi-trailer/B-double/B-triple/AB-triple/road train tail trailers
B-double lead trailers
B-triple lead trailers
B-triple middle trailers
converter dolly
low loader dolly
tandem trailers
Axles
Axles may include:
single
tandem
tri-axle
quad-axle
non-pivoting axles
pivoting front axles
Servicing, repair and/or maintaining
Servicing, repair and/or maintaining may include:
minor adjustments
operational testing
replacement of fluids and filters
Verify system
Verify system may include checking:
sub-frame
suspensions components
axles
wheel end
wheels
5th wheel
king pins
landing gear
coupling
Tooling and equipment
Tooling and equipment may include:
hand tools
testing equipment, including multimeters
power tools
air tools
specialist tools and equipment
lubricating equipment
measuring equipment
pressure gauges
vacuum gauges
manufacturer special stools
Materials
Materials may include:
spare parts
lubricants
fluids
cleaning materials
Safe operating procedures
Safe operating procedures may include:
operational risk assessment and treatments
toxic substances
electrical safety
machinery movement and operation
manual and mechanical lifting and shifting
working in proximity to others
Information/documents
Information/documents may include:
verbal, written and graphical instructions issued by authorised internal and external persons
parts listing prices and catalogues
inventory systems
Repair Times manuals
material safety data sheets (MSDS)
diagrams or sketches
engineer's design specifications and instructions
manufacturer specifications
industry standards e.g. Australian Design Rules
Australian Road Transport (ARTSA) - Brake Code of Practice
Australian standards
workplace specifications and requirements
current driver's licence
Legislative requirements
Legislative requirements are to be in accordance with applicable commonwealth, state or territory legislation, regulations, certification requirements and codes of practice, and may include:
award and enterprise agreements
industrial relations
Australian standards
Australian Design Rules
confidentiality and privacy
WHS
the environment
equal opportunity
anti-discrimination
duty of care
WHS requirements
WHS requirements are to be in accordance with applicable commonwealth, state or territory legislation and regulations, and organisational safety policies and procedures, and may include:
personal protective equipment and clothing
safety equipment
first aid equipment
hazard and risk control
elimination of hazardous materials and substances
manual handling, including shifting, lifting and carrying
emergency procedures
road rules
safe driving policy
Environmental requirements
Environmental requirements may include:
waste management
noise
dust
clean-up management
Organisational policies and procedures
Organisational policies and procedures may include:
quality policies and procedures, including Australian Standards
WHS, sustainability, environment, equal opportunity and anti-discrimination
manufacturer specifications and industry codes of practice
safe work procedures
reporting and recording procedures
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.
Trailers with a GTMR or ATM of over 4.5 tonnes
Trailers with a GTMR or ATM over 4.5 tonnes may include:
box trailers (skeleton type)
heavy goods trailers
low loaders
farm trailers
multiple car carriers
mobile machinery/equipment
cane bin trailers
dolly trailers
semi-trailers
timber jinkers
bus semi-trailers
dog trailers
pig trailers
semi-trailer/B-double/B-triple/AB-triple/road train tail trailers
B-double lead trailers
B-triple lead trailers
B-triple middle trailers
converter dolly
low loader dolly
tandem trailers
Axles
Axles may include:
single
tandem
tri-axle
quad-axle
non-pivoting axles
pivoting front axles
Servicing, repair and/or maintaining
Servicing, repair and/or maintaining may include:
minor adjustments
operational testing
replacement of fluids and filters
Verify system
Verify system may include checking:
sub-frame
suspensions components
axles
wheel end
wheels
5th wheel
king pins
landing gear
coupling
Tooling and equipment
Tooling and equipment may include:
hand tools
testing equipment, including multimeters
power tools
air tools
specialist tools and equipment
lubricating equipment
measuring equipment
pressure gauges
vacuum gauges
manufacturer special stools
Materials
Materials may include:
spare parts
lubricants
fluids
cleaning materials
Safe operating procedures
Safe operating procedures may include:
operational risk assessment and treatments
toxic substances
electrical safety
machinery movement and operation
manual and mechanical lifting and shifting
working in proximity to others
Information/documents
Information/documents may include:
verbal, written and graphical instructions issued by authorised internal and external persons
parts listing prices and catalogues
inventory systems
Repair Times manuals
material safety data sheets (MSDS)
diagrams or sketches
engineer's design specifications and instructions
manufacturer specifications
industry standards e.g. Australian Design Rules
Australian Road Transport (ARTSA) - Brake Code of Practice
Australian standards
workplace specifications and requirements
current driver's licence
Legislative requirements
Legislative requirements are to be in accordance with applicable commonwealth, state or territory legislation, regulations, certification requirements and codes of practice, and may include:
award and enterprise agreements
industrial relations
Australian standards
Australian Design Rules
confidentiality and privacy
WHS
the environment
equal opportunity
anti-discrimination
duty of care
WHS requirements
WHS requirements are to be in accordance with applicable commonwealth, state or territory legislation and regulations, and organisational safety policies and procedures, and may include:
personal protective equipment and clothing
safety equipment
first aid equipment
hazard and risk control
elimination of hazardous materials and substances
manual handling, including shifting, lifting and carrying
emergency procedures
road rules
safe driving policy
Environmental requirements
Environmental requirements may include:
waste management
noise
dust
clean-up management
Organisational policies and procedures
Organisational policies and procedures may include:
quality policies and procedures, including Australian Standards
WHS, sustainability, environment, equal opportunity and anti-discrimination
manufacturer specifications and industry codes of practice
safe work procedures
reporting and recording procedures
EVIDENCE GUIDE
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
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessors must be satisfied that the candidate can competently and consistently:
observe safety procedures and requirements
communicate effectively with others involved in or affected by the work
select servicing and repair methods and techniques appropriate to the circumstances and trailer type
complete preparatory activity in a systematic manner
service and repair a variety of trailer types with a GTMR or ATM of over 4.5 tonnes to regulatory and manufacturer and component supplier requirements
complete workplace and equipment records and workplace clean-up requirements.
Context of, and specific resources for assessment
The application of competency is to be assessed in the workplace or a simulated environment that reflects as far as possible the actual working environment.
Assessment is to occur using standard and authorised work practices, safety requirements and environmental constraints.
Assessment is to comply with relevant regulatory requirements, including specified Australian standards.
Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.
The following resources should be made available:
appropriate worksite
a range of trailers with a GTMR or ATM of over 4.5 tonnes requiring servicing and/or repairing
specifications and work instructions
equipment, hand and power tooling appropriate to servicing and repairing trailers with a GTMR or ATM of over 4.5 tonnes
relevant information, including manufacturer specifications.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of this Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of Required Skills and Knowledge.
Assessment methods must be by direct observation of tasks and include questioning on Required Skills and Knowledge to ensure its correct interpretation and application.
Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competency is able not only to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role.
Guidance information for assessment
Assessment processes and techniques must be culturally sensitive and appropriate to the language and literacy capacity of the candidate and the work being performed.
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
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessors must be satisfied that the candidate can competently and consistently:
observe safety procedures and requirements
communicate effectively with others involved in or affected by the work
select servicing and repair methods and techniques appropriate to the circumstances and trailer type
complete preparatory activity in a systematic manner
service and repair a variety of trailer types with a GTMR or ATM of over 4.5 tonnes to regulatory and manufacturer and component supplier requirements
complete workplace and equipment records and workplace clean-up requirements.
Context of, and specific resources for assessment
The application of competency is to be assessed in the workplace or a simulated environment that reflects as far as possible the actual working environment.
Assessment is to occur using standard and authorised work practices, safety requirements and environmental constraints.
Assessment is to comply with relevant regulatory requirements, including specified Australian standards.
Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.
The following resources should be made available:
appropriate worksite
a range of trailers with a GTMR or ATM of over 4.5 tonnes requiring servicing and/or repairing
specifications and work instructions
equipment, hand and power tooling appropriate to servicing and repairing trailers with a GTMR or ATM of over 4.5 tonnes
relevant information, including manufacturer specifications.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of this Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of Required Skills and Knowledge.
Assessment methods must be by direct observation of tasks and include questioning on Required Skills and Knowledge to ensure its correct interpretation and application.
Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competency is able not only to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role.
Guidance information for assessment
Assessment processes and techniques must be culturally sensitive and appropriate to the language and literacy capacity of the candidate and the work being performed.
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| D9308 | AURT337273A | Service and repair trailers in excess of 4.5 tonnes | Unit of competency |
