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Elements and Performance Criteria

1. Prepare to inspect suspension system
   • Task instruction is interpreted and vehicle to be worked on is identified
   • Inspection information is sourced and interpreted
   • Potential hazards and risks associated with task are identified and reported to workplace supervisor
   • Tools, equipment and materials are selected and checked for serviceability
2. Inspect suspension system
   • Inspection is carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Inspection results are compared with manufacturer specifications
   • Inspection findings are reported according to workplace procedures
3. Complete work processes
   • Final inspection is made to ensure work meets task instruction and workplace standards, 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
4. Prepare to inspect suspension system
   • Task instruction is interpreted and vehicle to be worked on is identified
   • Inspection information is sourced and interpreted
   • Potential hazards and risks associated with task are identified and reported to workplace supervisor
   • Tools, equipment and materials are selected and checked for serviceability
5. Inspect suspension system
   • Inspection is carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Inspection results are compared with manufacturer specifications
   • Inspection findings are reported according to workplace procedures
6. Complete work processes
   • Final inspection is made to ensure work meets task instruction and workplace standards, 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

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 requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: working with stored energy in springs, air springs and torsion bars lifting and supporting vehicles.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

inspect the front and rear suspension systems of one heavy commercial vehicle, including:

springs

spring dampers

arms, mountings and bushings

vehicle curb height.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

workplace health and safety (WHS) and occupational health and safety (OHS) requirements relating to inspecting heavy commercial vehicle suspension systems, including procedures for:

working with stored energy in springs, air springs and torsion bars

lifting and supporting vehicles

identification and function of major suspension system components, including:

airbag, coil spring, leaf spring and torsion bar

spring dampers

pneumatic, mechanical and rubber suspension

lateral and longitudinal arms

self-levelling device, ride control, height control

basic operation of suspension systems, including:

leaf spring

equaliser beam

rubber block

torsion bar

air spring

inspection procedures for suspension systems, including front and rear suspension.

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