Assessor Resource

AURHTX003
Diagnose and repair heavy vehicle automatic transmissions

Assessment tool

Version 1.0
Issue Date: March 2024


This unit describes the performance outcomes required to diagnose and repair faults in the automatic transmissions of heavy vehicles.It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation.

It applies to those working in the automotive service and repair industry. The automatic transmissions include those in agricultural machinery, heavy commercial vehicles or mobile plant machinery. The unit does not apply to electronic control drive management systems or power shift transmissions.

No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)



Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

Elements

Elements describe the essential outcomes.

Performance Criteria

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.

1. Prepare to diagnose and repair heavy vehicle automatic transmission

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic options are analysed and those most appropriate to the circumstances are selected

1.4 Hazards associated with the work are identified and risks are managed

1.5 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose automatic transmission

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements

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

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

3. Repair automatic transmission

3.1 Repair information is sourced and interpreted

3.2 Repair options are analysed and those most appropriate to the circumstances are selected

3.3 Repair tools, equipment and materials are selected and checked according to manufacturer procedures

3.4 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

3.5 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

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

4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

4.3 Tools and equipment are checked and stored according to workplace procedures

4.5 Workplace documentation is processed according to workplace procedures

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:

disassemble and reassemble one heavy vehicle automatic transmission

diagnose and repair a fault in two of the following components of a heavy vehicle automatic transmission:

torque converter

transmission oil pump

front pump seal

valve body

shift or pressure solenoid

clutch pack

one-way clutch

planetary gear set

internal bearings or thrust washers

gasket and seal leaks

governor

sensors

heat exchanger

remove, refit or replace a heavy vehicle automatic transmission.

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 automatic transmissions, including procedures for:

using transmission lifting and supporting equipment

isolating and stabilising vehicles

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

operating principles of heavy vehicle automatic transmissions and associated components, 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

electronic systems, including:

electronic control unit (ECU)

electronic sensors

solenoids

application, purpose and operation of heavy vehicle automatic transmissions and components, including:

torque converters, including:

impeller, stator, one-way clutch and turbine operation

lock-up torque converters

automatic transmission mechanical components, including:

clutch packs, one-way clutches, simple and compound planetary gear sets, and transfer case

power flows, including:

longitudinal automatic transmissions

transfer case

power take-off

automatic transmission hydraulic components and hydraulic control components, including:

oil pumps

valve body and hydraulic valves

heat exchanger

automatic transmission electronic components, including:

ECU input sensors

ECU outputs

diagnostic testing procedures for heavy vehicle automatic transmissions, including:

stall testing

pressure testing

scan tool testing

repair procedures for heavy vehicle automatic transmissions, including for hydraulic, mechanical and electrical components

dismantling procedures for heavy vehicle automatic transmissions, including:

measuring clearances and tolerances

inspecting components

post-repair testing procedures for heavy vehicle automatic transmissions.

Assessors must satisfy NVR/AQTF assessor requirements.

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

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the heavy vehicle automatic transmissions that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

automotive repair workplace or simulated workplace

workplace instructions

manufacturer automatic transmission specifications

one heavy vehicle with faults in its automatic transmission

diagnostic equipment for heavy vehicle automatic transmissions

tools, equipment and materials appropriate for repairing and adjusting heavy vehicle automatic transmissions.


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)


Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Elements

Elements describe the essential outcomes.

Performance Criteria

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.

1. Prepare to diagnose and repair heavy vehicle automatic transmission

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic options are analysed and those most appropriate to the circumstances are selected

1.4 Hazards associated with the work are identified and risks are managed

1.5 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose automatic transmission

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety requirements

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

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

3. Repair automatic transmission

3.1 Repair information is sourced and interpreted

3.2 Repair options are analysed and those most appropriate to the circumstances are selected

3.3 Repair tools, equipment and materials are selected and checked according to manufacturer procedures

3.4 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

3.5 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

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

4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

4.3 Tools and equipment are checked and stored according to workplace procedures

4.5 Workplace documentation is processed according to workplace procedures

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:

using transmission lifting and supporting equipment

isolating and stabilising vehicles.

Environmental requirements must include:

procedures for trapping, storing and disposing of oils and fluids released from automatic transmissions.

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:

disassemble and reassemble one heavy vehicle automatic transmission

diagnose and repair a fault in two of the following components of a heavy vehicle automatic transmission:

torque converter

transmission oil pump

front pump seal

valve body

shift or pressure solenoid

clutch pack

one-way clutch

planetary gear set

internal bearings or thrust washers

gasket and seal leaks

governor

sensors

heat exchanger

remove, refit or replace a heavy vehicle automatic transmission.

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 automatic transmissions, including procedures for:

using transmission lifting and supporting equipment

isolating and stabilising vehicles

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

operating principles of heavy vehicle automatic transmissions and associated components, 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

electronic systems, including:

electronic control unit (ECU)

electronic sensors

solenoids

application, purpose and operation of heavy vehicle automatic transmissions and components, including:

torque converters, including:

impeller, stator, one-way clutch and turbine operation

lock-up torque converters

automatic transmission mechanical components, including:

clutch packs, one-way clutches, simple and compound planetary gear sets, and transfer case

power flows, including:

longitudinal automatic transmissions

transfer case

power take-off

automatic transmission hydraulic components and hydraulic control components, including:

oil pumps

valve body and hydraulic valves

heat exchanger

automatic transmission electronic components, including:

ECU input sensors

ECU outputs

diagnostic testing procedures for heavy vehicle automatic transmissions, including:

stall testing

pressure testing

scan tool testing

repair procedures for heavy vehicle automatic transmissions, including for hydraulic, mechanical and electrical components

dismantling procedures for heavy vehicle automatic transmissions, including:

measuring clearances and tolerances

inspecting components

post-repair testing procedures for heavy vehicle automatic transmissions.

Assessors must satisfy NVR/AQTF assessor requirements.

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

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the heavy vehicle automatic transmissions that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

automotive repair workplace or simulated workplace

workplace instructions

manufacturer automatic transmission specifications

one heavy vehicle with faults in its automatic transmission

diagnostic equipment for heavy vehicle automatic transmissions

tools, equipment and materials appropriate for repairing and adjusting heavy vehicle automatic transmissions.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
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 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety 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 
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 
Final inspection is made to ensure work is to workplace expectations and vehicle or transmission 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 
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 
Diagnostic tests are carried out according to manufacturer specifications, workplace procedures, and environmental and safety 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 
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 
Final inspection is made to ensure work is to workplace expectations and vehicle or transmission 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 

Forms

Assessment Cover Sheet

AURHTX003 - Diagnose and repair heavy vehicle automatic transmissions
Assessment task 1: [title]

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I declare that the assessment tasks submitted for this unit are my own work.

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Assessment Record Sheet

AURHTX003 - Diagnose and repair heavy vehicle automatic transmissions

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Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

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Overall assessment result: Competent Not yet competent

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