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 taskrelated information

checking for conformance to specification

removing the cylinder head from the engine

dismantling the cylinder head and ancillary components

identifying the cylinder head as serviceable or requiring repairreplacement

pressure testing the cylinder head

measuring and recording spring tension valve and guide dimensions and surface flatness

grounding valves and valve

cleaning cylinder head and ancillary equipment using appropriate solutions

identifying cylinder head components for repair or replacement

replacing cylinder head components

checking parts for abnormal wear or defects

identifying components for reuse or replacement

cleaning parts using appropriate solutions and procedures

racking and setting out engine parts according to their original position in readiness for reassembly

obtaining and recording measurements

undertaking calculations and numerical operations within the scope of this unit

Required knowledge

Look for evidence that confirms knowledge of

the characteristics of surface finishes and wear patterns as applied to valve operating mechanisms and cylinder heads

the specifications of valve operating mechanisms and cylinder heads

the procedures tools techniques and equipment for dismantling cylinder heads and ancillary equipment the hazards and control measures associated with the removal of cylinder heads and ancillary equipment including housekeeping

the procedures, tools, techniques and equipment for dismantling cylinder heads and ancillary equipment
the hazards and control measures associated with the removal of cylinder heads and ancillary equipment, including housekeeping

the procedures for storing parts in readiness for reassembly

the procedures tools techniques and equipment for pressure testing cylinder heads

the cylinder head specifications

the procedures tools techniques and equipment for measuring spring tension valve and guide dimensions and surface flatness

the procedures for recording cylinder head and valve mechanism measurements

the procedures tools techniques and equipment for removing the cylinder head from the engine

the procedures tools techniques and equipment for grinding valves and valve seats

the procedures and solutions for cleaning cylinder heads and ancillary equipment

the operational parameters of cylinder head components

the procedures tools techniques and equipment for reassembling cylinder heads and their components

the precautions to be taken when reassembling cylinder heads

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 perform engine topend overhaul 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 performing engine topend overhaul 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 supervisors 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