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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Prepare to diagnose and repair mobile plant steering 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
2. Diagnose steering 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
3. Repair steering 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 according to manufacturer procedures
   • 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
4. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and machinery 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
5. Prepare to diagnose and repair mobile plant steering 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
6. Diagnose steering 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
7. Repair steering 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 according to manufacturer procedures
   • 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
8. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and machinery 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 and environmental requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: isolating and locking articulated steering systems isolating and stabilising machines working with stored fluid pressures from accumulators working with high pressure fluid hazards using lifting, jacking and supporting equipment environmental requirements, including procedures for trapping, storing and disposing of hydraulic fluid released from steering systems.

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Performance Evidence

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 mobile plant steering systems as follows:

one articulated steering system

two of the following systems:

front wheel steering

all wheel steering

differential steer

steering clutch and brake

inspect and charge one accumulator according to manufacturer specifications and relevant Australian standards.

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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 diagnosing and repairing mobile plant steering systems, including procedures for:

isolating and locking articulated steering systems

isolating and stabilising machines

working with stored fluid pressures from accumulators

working with high pressure fluid hazards

using lifting, jacking and supporting equipment

environmental requirements, including procedures for trapping, storing and disposing of hydraulic fluid released from steering systems

operating principles of mobile plant steering systems and associated components, including full hydraulic steering and:

safety protection valves in the circuits

hand metering units (HMUs) and flow amplifier

hydraulic and electrohydraulic control

accumulator steering circuit

application, purpose and operation of mobile plant steering systems and components, including:

articulated steering

front wheel steering

all wheel steering

differential steer

steering clutch and brake

identification, function and adjustment of toe-in and toe-out steering angles

diagnostic testing procedures for mobile plant steering systems, including:

pressure and flow testing the system and individual components

accumulator tests

HMU and flow amplifier tests

testing the pressure settings on all safety protection valves in the circuit

repair and adjustment procedures for mobile plant steering systems, including:

accumulator inspection and charging procedures that reflect manufacturer specifications and Australian standards

pressure settings and adjustment procedures for main and safety protection valves in the steering circuit

post-repair testing procedures for mobile plant steering systems.

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