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 drive line and final drives. 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 testing and diagnosing drive line and final drives, 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

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

checking the drive line and final drive for correct operation

using test equipment correctly

testing the drive line and final drive components for conformance to specification

removing and refitting components to drive line and final drive assemblies

adjusting drive line and final drive components using appropriate tools, techniques and equipment

recording test and work activities

operating the drive line and final drive 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 drive lines and final drives

the functions of universal and constant velocity joints, differentials and axles

the procedures for checking drive lines and final drives for correct operation

faulty drive line and final drive components

the appropriate action to correct the faulty component(s)

the test equipment to be used in checking/testing drive lines and final drives for correct operation

the procedures for testing drive lines and final drives, including any necessary adaptation of test equipment

component parts for reuse or replacement.

the procedures for checking drive line and final drive components for wear and clearance

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

replacement components using manufacturers' data.

the procedures for removing and refitting drive line and final drive components

the procedures for adjusting drive line and final drive components

the tools, techniques and equipment to be used to maintain and repair drive line and final drive assemblies

the effects of the adjustments on drive line and final drive operation

the procedures for recording test and work activities

the drive line and final drive assembly specifications

hazards and control measures associate with diagnosing and rectifying drive line and final drives, including housekeeping

safe work practices and procedures

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.