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Elements and Performance Criteria

1. Prepare to inspect and test transmission
   • Job requirements are determined from workplace instructions
   • Inspection and testing procedures and information are sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and test equipment and materials are selected and checked for serviceability
2. Inspect and test transmission and analyse results
   • Inspection and tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Inspection and test results are compared with manufacturer specifications
   • Inspection and test findings are reported according to workplace procedures, including recommendations for necessary repairs, replacement or adjustments
3. Prepare to remove and replace transmission
   • Hazards associated with the work are identified and risks are managed
   • Removal and replacement procedures and information are sourced and interpreted
   • Tools, equipment and materials are selected and checked for serviceability
4. Remove and replace transmission
   • Transmission is removed and replaced according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Adjustments during removal and replacement are made according to manufacturer specifications and workplace procedures
   • Post-replacement testing is carried out according to workplace procedures
5. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and vehicle or 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
6. Prepare to inspect and test transmission
   • Job requirements are determined from workplace instructions
   • Inspection and testing procedures and information are sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and test equipment and materials are selected and checked for serviceability
7. Inspect and test transmission and analyse results
   • Inspection and tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Inspection and test results are compared with manufacturer specifications
   • Inspection and test findings are reported according to workplace procedures, including recommendations for necessary repairs, replacement or adjustments
8. Prepare to remove and replace transmission
   • Hazards associated with the work are identified and risks are managed
   • Removal and replacement procedures and information are sourced and interpreted
   • Tools, equipment and materials are selected and checked for serviceability
9. Remove and replace transmission
   • Transmission is removed and replaced according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Adjustments during removal and replacement are made according to manufacturer specifications and workplace procedures
   • Post-replacement testing is carried out according to workplace procedures
10. Complete work processes
    • Final inspection is made to ensure work is to workplace expectations and vehicle or 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: using lifting and supporting equipment when working with transmissions manually handling heavy vehicle transmissions environmental requirements, including procedures for trapping, storing and disposing of fluids released from transmissions.

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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:

inspect, test and replace the automatic transmissions of two different heavy vehicles or machinery.

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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 inspecting, testing and replacing heavy vehicle automatic transmissions, including procedures for:

using lifting and supporting equipment when working with transmissions

manually handling heavy vehicle transmissions

environmental requirements, including procedures for trapping, storing and disposing of fluids released from transmissions

operating principles of heavy vehicle automatic transmissions, including:

fluid couplings

mechanical systems, including:

gear types

gear ratios and torque

simple and compound planetary gear trains

gear range and transfer case power flows

hydraulic systems and components

electronic systems, including:

electronic control units (ECU)

electronic sensors

solenoids

inspection procedures for heavy vehicle automatic transmissions, including:

visual, aural and functional assessment, including:

fluid leakage

oil condition

speed and range selection

wear, damage, and corrosion

electrical circuit faults

testing procedures for heavy vehicle automatic transmissions, including:

stall testing

pressure testing

scan tool testing

replacement procedures for heavy vehicle automatic transmissions

post-replacement testing procedures for heavy vehicle automatic transmissions, including operational testing.

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