Work applies to the braking systems of mobile plant equipment in construction, mining and agricultural environments.

This unit does not apply to work relating to anti-lock braking systems (ABS) or to air braking systems.

ELEMENT

PERFORMANCE CRITERIA

1. Prepare to diagnose and repair a mobile plant braking system

1.1. Workplace instructions are used to determine job requirements

1.2. Workplace health and safety (WHS) requirements are observed and applied throughout the work

1.3. Procedures and information are sourced and interpreted

1.4. Safety issues and warnings in relation to working with heavy mobile equipment and its braking systems are identified and applied

1.5. Diagnosis options are analysed and those most appropriate to the circumstances are selected and prepared

1.6. Appropriate diagnostic tools and equipment are selected and prepared

2. Diagnose a mobile plant braking system

2.1. Diagnostic tests are performed according to workplace procedures and without causing damage to components or system

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

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

3. Repair a mobile plant braking system

3.1. Repair options are analysed and those most appropriate to the circumstances are selected and prepared

3.2. Tools and testing equipment are identified and checked for safe and effective operation

3.3. Repairs, component replacement and adjustment are carried out according to workplace procedures and manufacturer and component supplier specifications, and without causing damage to components or systems

3.4. Post-repair testing of braking system is carried out according to workplace procedures and relevant legislation

4. Clean up work area and finalise work processes

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

4.2. Tools and equipment are checked and stored according to workplace procedures

4.3. Workplace documentation is processed according to workplace procedures

Required skills

communication skills to:

clarify workplace instructions and determine job requirements

gain information from appropriate persons and assistance as required

coordinate work with site supervisor and other workers

report work outcomes and problems

initiative and enterprise skills to:

adapt to new and emerging situations in the workplace relating to repairing mobile plant braking systems

learning skills to:

ask questions to gain information

identify sources of information, assistance and expert knowledge to expand knowledge, skills and understanding

literacy skills to:

read workplace instructions, specifications, warnings and technical procedures

produce clear and understandable workplace documentation

numeracy skills to assess tolerances and apply accurate measurements and adjustments

planning and organising skills to:

plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed on time

identify risk factors and take action to minimise risk

problem-solving skills to:

determine job requirements

determine the underlying causes of faults

produce recommendations for necessary repairs or adjustments

self-management skills to:

select and use appropriate equipment, materials, processes and procedures

recognise limitations and seek timely advice

teamwork skills to work in a team, as applicable to the workplace’s procedures and practices, to repair mobile plant braking systems

technical skills to:

check and use mobile plant braking system testing and repair equipment

carry out measuring and testing, repair and adjustment procedures according to manufacturer and component supplier specifications

technology skills to:

operate diagnostic and testing equipment

conduct performance testing of components, systems and equipment

use tools and equipment efficiently and safely

store and care for components, parts, tools, test equipment and support equipment

Required knowledge

WHS regulations, requirements, equipment and material relating to mobile plant braking systems, including personal safety requirements

environmental regulations and requirements relating to mobile plant braking systems

application, purpose and operating principles of mobile plant braking systems, including:

multi-disc wet braking systems, including associated cooling systems

disc braking systems

drum braking systems

lifting and support procedures for mobile plant equipment

testing procedures of mobile plant braking systems

repair procedures of mobile plant braking systems

post-repair testing procedures of mobile plant braking systems

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, required Skills and Knowledge, the 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

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy all of the requirements of the performance criteria and required skills and knowledge.

A person who demonstrates competency in this unit must be able to:

observe safety procedures and requirements

communicate effectively with others involved in or affected by the work

select methods and techniques appropriate to the circumstances

complete preparatory activity in a systematic manner

diagnose and repair a range of mobile plant braking systems

conduct diagnosis and repair procedures according to workplace, manufacturer and component supplier requirements

present vehicle and equipment in a condition that complies with workplace requirements.

Context of, and specific resources for assessment

Competency is to be assessed in the workplace or a simulated workplace environment that accurately reflects performance in a real workplace setting.

Assessment is to occur:

using standard workplace practices and procedures

following safety requirements

applying environmental constraints.

Assessment is to comply with relevant:

regulatory requirements

Australian standards

industry codes of practice.

The following resources must be made available for the assessment of this unit:

workplace location or simulated workplace

material relevant to the repair of mobile plant braking systems

equipment, hand and power tools appropriate to the repair of mobile plant braking systems

specifications and work instructions.

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 the 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 correct interpretation and application.

Competence in this unit may be assessed in conjunction with other units which together form part of a holistic work role.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate the needs of diverse clients.

Assessment processes and techniques must be culturally sensitive and appropriate to the language, literacy and numeracy capacity of the candidate and the work being performed.

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, 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.

Workplace instructions may include:

computer-generated instructions

verbal instructions

written instructions.

Job requirements may include:

mobile plant equipment braking system diagnosis and repair methods, processes and equipment.

Workplace health and safety requirements:

is to include that prescribed under individual legislation, regulations, codes of practice, and workplace policies and practices

may include:

protective clothing and equipment

use of tools and equipment

handling of material

use of fire-fighting equipment

first aid equipment

hazard control, including control of hazardous materials and toxic substances.

Procedures and information may include:

verbal, written and graphical instructions

signage

work schedules, plans and specifications

work bulletins or memos

material safety data sheets (MSDS)

diagrams or sketches

safe work procedures relating to the repair and replacement of mobile plant braking systems

regulatory and legislative requirements relating to automotive industry

Australian Design Rules

engineer's design specifications and instructions

organisational work specifications and requirements

instructions issued by authorised workplace or external persons

Australian standards

heavy vehicle service requirements and repair manuals.

Safety issues and warnings must include:

safe use of tools and equipment

dangers associated with the workplace environment

hazard identification and control of hazardous materials and substances, including hydraulic fluid, brake fluid and brake lining fibres

machine tag-out, isolation and wheel chocking

stored fluid pressures from accumulators

high-pressure fluid hazards.

Diagnostic tools and equipment may include:

hand tooling

oil pressure gauges

nitrogen test and charging equipment

lifting and slinging equipment

bleeding and brake testing devices

dust-extraction equipment.

Diagnostic tests may include:

stall testing of service, park and secondary brakes

dynamic brake testing

friction material wear

brake drum component serviceability

disc brake component serviceability

multi-disc wet brake component serviceability

vehicle braking efficiency

accumulator pre-charge and oil application pressure testing.

Faults may include:

poor performance of service, park or secondary brakes

failure or partial failure of service, park or secondary brakes

binding of service, park or secondary brakes.

Diagnosis findings may include:

comparison of test results to manufacturer specifications

recommendations for repair, adjustment or replacement of parts.

Repair options may include:

removal, replacement and adjustment procedures

dismantle, repair, re-assembly and adjustment procedures.

Post-repair testing may include:

stall testing of service, park and secondary brakes

dynamic brake testing.

Mechanical – Mobile Plant

Unit sector

Technical – Brakes

This unit contains employability skills.