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Elements and Performance Criteria

1. Prepare to grind camshaft
   • Job requirements are determined from workplace instructions
   • Camshaft is cleaned and inspected, lobe lift is measured, and condition is reported
   • Camshaft grinding information is sourced, procedures and methods are analysed, and appropriate grinding machine and master are selected for camshaft
   • Hazards associated with the work are identified and risks are managed
   • Tools and measuring equipment are selected and checked for serviceability
   • Camshaft grinding wheel is dressed to match job requirements
   • Camshaft is positioned in grinder and clamped according to manufacturer specifications and workplace procedures, and centre run-out and bend are checked
2. Grind camshaft lobes
   • Camshaft grinder movement is set to master according to manufacturer procedures, and position of camshaft to master is verified statically
   • First set of camshaft lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Master is re-phased to suit next cylinder’s lobes, and lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Remaining camshaft lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft is measured to ensure compliance with specifications and that base circles are true
3. Finish camshaft grinding
   • Camshaft is prepared for phosphating according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft is phosphated according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Journals are linished according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft profile is identified on camshaft according to workplace procedures
   • Bright surfaces are treated with rust prevention solution and camshaft is prepared for further process or storage according to workplace procedures
4. Complete work processes
   • Final inspection is made to ensure finished work complies with workplace requirements and camshaft is presented ready for use or storage
   • 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
5. Prepare to grind camshaft
   • Job requirements are determined from workplace instructions
   • Camshaft is cleaned and inspected, lobe lift is measured, and condition is reported
   • Camshaft grinding information is sourced, procedures and methods are analysed, and appropriate grinding machine and master are selected for camshaft
   • Hazards associated with the work are identified and risks are managed
   • Tools and measuring equipment are selected and checked for serviceability
   • Camshaft grinding wheel is dressed to match job requirements
   • Camshaft is positioned in grinder and clamped according to manufacturer specifications and workplace procedures, and centre run-out and bend are checked
6. Grind camshaft lobes
   • Camshaft grinder movement is set to master according to manufacturer procedures, and position of camshaft to master is verified statically
   • First set of camshaft lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Master is re-phased to suit next cylinder’s lobes, and lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Remaining camshaft lobes are ground according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft is measured to ensure compliance with specifications and that base circles are true
7. Finish camshaft grinding
   • Camshaft is prepared for phosphating according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft is phosphated according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Journals are linished according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Camshaft profile is identified on camshaft according to workplace procedures
   • Bright surfaces are treated with rust prevention solution and camshaft is prepared for further process or storage according to workplace procedures
8. Complete work processes
   • Final inspection is made to ensure finished work complies with workplace requirements and camshaft is presented ready for use or storage
   • 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.

Cleaning and inspectingmust include:	determining camshaft lobe profile and timing requirements checking camshaft centre run-out checking camshaft for: bend drive pin position and condition fuel pump lobe gear condition.
Dressing must include:	dressing grinding wheel by truing preparing for: roughing finishing.
Verifying statically must include:	checking for lobe taper checking wheel to lobe contact.
Safety and environmental requirements must include:	work health and safety (WHS) and occupational health and safety (OHS) requirements, including: procedures for selecting and using personal protective equipment (PPE) for: handling camshafts using chemical cleaning agents operational risk assessment and treatments associated with: electrical safety of grinding machinery grinding machinery movement and operation procedures for trapping, storing and disposing of cleaning and lubricating fluids released during the grinding process.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

grind one camshaft of an in-line engine with at least four cylinders.

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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, including:

procedures for selecting and using personal protective equipment (PPE) for:

handling camshafts

using chemical cleaning agents

operational risk assessment and treatments associated with:

electrical safety of grinding machinery

grinding machinery movement and operation

environmental requirements, including procedures for trapping, storing and disposing of cleaning and lubricating fluids released during the grinding process

types, characteristics and limitations of camshaft grinding machines, including use of cam doctors

cleaning and inspection procedures, including:

determining camshaft lobe profile and timing requirements

checking camshaft centre run-out

checking camshaft for bend

procedures for preparing camshaft grinding wheel, including:

dressing and truing to restore original cutting geometry and correct flatness and roundness

procedures for camshaft lobe grinding, including:

roughing and finishing

procedures for finalising camshaft grinding, including:

linishing

phosphating

identifying camshaft profile on camshafts

requirements of Australian standards relevant to engine reconditioning, including:

AS 4182 Automotive repairs – Code of practice for reconditioning reciprocating spark ignition engines

AS 4427 Automotive repairs – Code of practice for reconditioning reciprocating compression ignition engines

post-grinding procedures, including protection of machined surfaces.

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