The unit applies to testing and repair or replacement activities associated with automatic, semi automatic and hydrostatic transmissions, and fluid coupling/torque converter assemblies. Control of lockup/shifting etc. can be either fully hydraulic or electronic. Testing and assessment of performance would typically require operation of the plant or equipment.

Band: A

Unit Weight: 8

Path 1

MEM09002B

Interpret technical drawing

MEM12023A

Perform engineering measurements

MEM18001C

Use hand tools

MEM18002B

Use power tools/hand held operations

MEM18055B

Dismantle, replace and assemble engineering components

ELEMENT

PERFORMANCE CRITERIA

1. Assess converter/transmission operation

1.1. Torque converter, simple and compound planetary gearing, and hydraulic control operating principles are understood.

1.2. Relevant information is obtained and is correctly interpreted prior to any testing.

1.3. Preliminary checks are undertaken safely and to prescribed procedures.

1.4. Faults are correctly isolated to component level and appropriate corrective action is determined.

1.5. Test equipment is adapted and used correctly.

1.6. Component parts are correctly assessed for reuse or replacement.

2. Repair/replace faulty components

2.1. Component wear and clearances are correctly determined using appropriate test equipment and manufacturers' recommendations.

2.2. Replacement components are correctly selected using manufacturers' data.

2.3. Components are removed and refitted to converter/transmission assembly following prescribed procedures.

2.4. Adjustments are made correctly using appropriate tooling/equipment and manufacturers' data.

2.5. Test and rectification activities are accurately recorded.

2.6. Converter/transmission assembly is free of excessive noise and operates to specification after repair work is carried out.

Required skills

Look for evidence that confirms skills in:

reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents

planning and sequencing operations

checking task-related information

checking for conformance to specification

identifying faulty automatic transmission components

checking the automatic transmission for correct operation

using test equipment correctly

testing the transmission components for conformance to specification

identifying component parts for reuse or replacement

removing and refitting components to the automatic transmission assembly

adjusting automatic transmission components using appropriate tools, techniques and equipment

recording test and rectification activities

identifying replacement components using manufacturers' data

operating the automatic transmission assembly free of excessive noise and in conformance to specifications

undertaking calculations and numerical operations within the scope of this unit

Required knowledge

Look for evidence that confirms knowledge of:

the principles of operation of automatic transmissions

the function of torque converters, planetary gearing and hydraulic controls in automatic transmissions

the procedures for checking automatic transmissions for correct operation

the appropriate action to correct the faulty component(s)

the test equipment to be used in checking/testing automatic transmissions for correct operation

the reasons for selecting the chosen test equipment

the procedures for testing automatic transmissions, including any necessary adaptation of test equipment

the procedures for checking automatic transmission components for wear and clearance

the tools, techniques and equipment to be used to determine component wear and clearance

the reasons for selecting the chosen tools, techniques and equipment

the procedures for removing and refitting automatic transmission components

the procedures for adjusting automatic transmission components

the tools, techniques and equipment to be used to maintain and repair automatic transmission assemblies

the effects of the adjustments on automatic transmission operation

the procedures for recording test and rectification activities

the automatic transmission assembly specifications

hazards and control measures associate with testing and rectifying automatic transmissions, including housekeeping

safe work practices and procedures

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to diagnose and rectify automatic transmissions. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with diagnosing and rectifying automatic transmissions, or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Unit sector

Maintenance&diagnostics

This unit contains employability skills.