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Elements and Performance Criteria

1. Carry out wheel alignment pre-checks
   • Job requirements are determined from workplace instructions
   • Alignment pre-check information is sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Alignment pre-checks of vehicle wheels, steering and suspension condition are carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Faults are identified and reported according to workplace procedures as necessary
2. Carry out vehicle wheel alignment activities
   • Vehicle wheel alignment specifications are sourced and interpreted
   • Wheel alignment measuring equipment is connected to vehicle according to manufacturer specifications and workplace procedures
   • Wheel alignment is carried out without causing damage to components or systems, and readings are recorded
   • Corrective adjustments are carried out according to workplace procedures and safety requirements, and within manufacturer specifications
   • Wheel alignment is re-checked to confirm accuracy of adjustments
   • Post-adjustment wheel alignment readings are recorded and reported according to workplace procedures
3. Complete work process
   • 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
4. Carry out wheel alignment pre-checks
   • Job requirements are determined from workplace instructions
   • Alignment pre-check information is sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Alignment pre-checks of vehicle wheels, steering and suspension condition are carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Faults are identified and reported according to workplace procedures as necessary
5. Carry out vehicle wheel alignment activities
   • Vehicle wheel alignment specifications are sourced and interpreted
   • Wheel alignment measuring equipment is connected to vehicle according to manufacturer specifications and workplace procedures
   • Wheel alignment is carried out without causing damage to components or systems, and readings are recorded
   • Corrective adjustments are carried out according to workplace procedures and safety requirements, and within manufacturer specifications
   • Wheel alignment is re-checked to confirm accuracy of adjustments
   • Post-adjustment wheel alignment readings are recorded and reported according to workplace procedures
6. Complete work process
   • 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

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 mustinclude:

work health and safety (WHS), occupational health and safety (OHS) requirements, including procedures for raising and supporting heavy vehicles or machinery.

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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:

align the wheels on at least three different heavy vehicles, in which the work must involve measuring, recording and adjusting the following angles to manufacturer specifications:

camber

caster

king pin inclination (KPI)

toe (toe-in and toe-out)

toe-out on turns.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to heavy vehicle wheel alignment operations, including procedures for raising and supporting heavy vehicles or machinery

application, purpose and operating principles of steering geometry and wheel alignment angles, including:

Ackermann principle of steering

camber

caster

KPI

toe-in and toe-out

toe-out on turns

steering axis inclination

two wheel and twin four wheel steer

vehicle pre-alignment inspection procedures, including:

analysing tyre wear

inflating tyre

adjusting wheel bearing

inspecting steering and suspension

determining wheel run-out

determining vehicle height

checking chassis and axle alignment

wheel alignment equipment types, application and operation

procedures for measuring and adjusting steering angles, including:

camber

caster

toe-in and toe-out

toe-out on turns

post-wheel alignment testing procedures for heavy vehicles.

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