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Elements and Performance Criteria

1. Determine requirements
   • Component defect reports (removal tags) or customer order are correctly interpreted and matched by part and serial numbers
   • Crankcase assembly components are inspected and/or operated through prescribed test procedures to establish serviceability and confirm defects, if necessary, while observing relevant work health and safety (WHS) procedures, including the use of material safety data sheets (MSDS) and personal protective equipment (PPE)
   • Modification status is clearly established to assist in determining the overhaul requirements for the components
   • Extent of overhaul or repair is identified and documented in accordance with standard enterprise procedures
2. Dismantle and inspect piston engine crankcase assembly components/parts
   • Crankcase assembly component parts are dismantled in accordance with maintenance manual and/or enterprise procedures while observing relevant WHS procedures, including the use of MSDS and PPE
   • Component parts are assessed for serviceability in accordance with the relevant maintenance documentation
   • Parts requiring specialist repair are tagged and repair instructions are specified in accordance with standard enterprise procedures
   • Parts requiring non-destructive testing (NDT) are prepared for testing in accordance with the relevant maintenance documentation
   • Parts lists are compiled and processed in accordance with standard enterprise procedures
3. Repair and/or modify piston engine crankcase assembly components or parts
   • Component parts are repaired or replaced in accordance with the relevant maintenance documentation
   • Modification of components is undertaken where required by reference to relevant manufacturer's bulletins or procedures, regulatory requirements and/or customer requirements while observing relevant WHS procedures, including the use of MSDS and PPE
4. Assemble, test and adjust piston engine crankcase assembly components
   • Crankcase assembly component parts are assembled within specified tolerances and in accordance with the appropriate maintenance documents while observing relevant WHS procedures, including the use of MSDS and PPE
   • Components are tested, adjusted or calibrated to operate within prescribed specifications
   • Crankcase assembly is prepared for engine reassembly
   • Where components are not to be assembled into an engine the finished components are tagged, sealed and packaged in accordance with standard enterprise procedures
   • Required maintenance documentation and modification records are completed and processed in accordance with standard enterprise procedures

Range Statement

This field allows for different 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.
Piston engine crankcase assembly components include:	Crankshaft, gears, con rods and counterweights Camshaft, hydraulic tappets/cam followers and gears Propeller shaft, reduction drive gear and quill shaft Component gear drives/trains Crankcase castings, bearings, component mounting pads and studs Oil system components Supercharger and turbocharger components (where applicable to the enterprise) Propeller governor (where applicable to the enterprise)
Testing and adjustment:	Complex testing and adjusting of components, where required, will be carried out under supervision at the appropriate level
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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Performance Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:

applying relevant WHS procedures, including the use of MSDS and PPE

using relevant maintenance documentation, specifications and aircraft/component manuals to:

recognise state of serviceability and overhaul or repair requirements for piston engine crankcase assembly components as listed in the Range of Conditions

dismantle and inspect crankcase assembly component parts for serviceability and identify repair requirements as applicable

repair/replace/modify crankcase component parts

assemble, test for correct operation and adjust crankcase assembly components

correctly tagging, sealing and packaging completed components.

Evidence of transferability of skills and knowledge related to repair is essential. This shall be demonstrated through application across a number of different piston engine crankcase assembly components. Ability to assess component serviceability and interpret parts requirements will be necessary to supplement the required evidence. Capability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical. The application of testing procedures should also clearly indicate knowledge of crankcase assembly operation.

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Knowledge Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

how to obtain relevant MSDS

the use of applicable items of PPE

WHS procedures

component inspection and wear measurement procedures

non-destructive testing methods and application

component repair and overhaul procedures and processes.

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