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AURTTM007 — Carry out crankshaft grinding

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What an assessment for AURTTM007 must cover

53 assessable components: 5 elements (33 performance criteria), 1 performance evidence and 13 knowledge evidence requirements, plus 6 foundation skills. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Prepare to grind crankshaft

  • 1.1Job requirements are determined from workplace instructions
  • 1.2Crankshaft is cleaned and inspected and condition reported
  • 1.3Information is sourced, procedures and methods are analysed, and appropriate crankshaft grinding machine and equipment are selected for the crankshaft
  • 1.4Hazards associated with the work are identified and risks are managed
  • 1.5Tools and measuring equipment are selected and checked for serviceability
  • 1.6Crankshaft grinding wheel is prepared according to machine manufacturer specifications and tolerances, and workplace procedures
  • 1.7Crankshaft is measured to determine under size and tolerances, including journal diameters and sizes of grind
  • 1.8Crankshaft is positioned in grinder in correct direction of rotation, and clamped according to manufacturer specifications and workplace procedures

2 Grind crankshaft big end bearing journals

  • 2.1Chuck offsets are set according to the stroke of crankshaft
  • 2.2Crankshaft grinder wheel head position is set according to machine manufacturer procedures
  • 2.3Constant measuring gauge and steady rest are positioned on big end journal taking into account position of oil hole
  • 2.4Crankshaft is ground at correct rotational speed for crankshaft material and diameter according to safety requirements, and following machinery safe operating procedures
  • 2.5Crankshaft is measured to ensure compliance with specifications and tolerances
  • 2.6Grinding operations are completed to required specifications and tolerances according to safety requirements, and following machinery safe operating procedures

3 Grind crankshaft main bearing journals

  • 3.1Crankshaft is removed from grinder
  • 3.2Chucks are centralised for main bearings and counterweights are adjusted
  • 3.3Crankshaft is refitted to grinder in correct direction of rotation, and is clamped according to manufacturer specifications and workplace procedures
  • 3.4Datum is set in relation to crankshaft rear flange and nose
  • 3.5Crankshaft grinder wheel head movement is set according to manufacturer procedures
  • 3.6Constant measuring gauge and steady rest are positioned on main bearing journal taking into account position of oil hole
  • 3.7Crankshaft is ground at correct rotational speed for crankshaft material and diameter according to safety requirements, and following machinery safe operating procedures
  • 3.8Crankshaft is inspected to ensure compliance with specifications and tolerances
  • 3.9Grinding operations are completed to required specifications and tolerances according to safety requirements, and following machinery safe operating procedures

4 Finish crankshaft grinding

  • 4.1Oil holes are chamfered and dressed
  • 4.2Journals are linished with correct grade of belt and in right direction of rotation and required finish
  • 4.3Flange ends and seal areas are faced
  • 4.4Crankshaft is examined and measured according to manufacturer specifications and tolerances, and workplace procedures
  • 4.5Crankshaft is cleaned according to workplace procedures
  • 4.6Bright surfaces are treated with rust prevention solution and crankshaft is prepared for further process or storage according to workplace procedures

5 Complete work processes

  • 5.1Final inspection is made to ensure finished work complies with workplace requirements and crankshaft is presented ready for use or storage
  • 5.2Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
  • 5.3Tools and equipment are checked and stored according to workplace procedures
  • 5.4Workplace documentation is processed according to workplace procedures

Performance evidence

  • grind one crankshaft of an in-line petrol engine with at least four cylinders.

Knowledge evidence

  • work health and safety (WHS) and occupational health and safety (OHS) requirements relating to grinding crankshafts, including procedures for: - selecting and using personal protective equipment (PPE) for using grinding machines and chemical cleaning and lubricating agents - identifying hazards associated with rotating grinding machines - manual handling techniques relating to grinding crankshafts
  • types, characteristics and limitations of crankshaft grinding machines, including: - hand-held machines for oil hole dressing - types and grades of grinding wheels, including grit grades
  • dismantling procedures for crankshafts, including: - numbering and removing counterweights - drive gears - oil seal sleeves and dowels
  • cleaning and inspection procedures, including: - chemically cleaning crankshafts, including methods of avoiding damage to nitride and Tufftride crankshafts - identifying crankshaft material - identifying heat treatment process, including nitriding, Tufftriding and induction hardening - identifying radius treatment, including deep fillet rolling, radius rolling and shot peening - checking alignment of crankshaft in V blocks - measuring journals against specifications and identifying damaged journals
  • testing procedures for crankshaft, including: - crack testing coil shot and end shot - testing hardness of journals
  • procedures for preparing crankshaft grinding wheel, including: - wheel preparation, including selecting wheel to suit radius and journal width of crankshaft - dressing procedures for wheel, including: - types of diamonds for front and radius dressing - procedures for dressing wheel to suit crankshaft radius - procedures for dressing front of wheel
  • procedures for big end grinding, including: - setting crankshaft rotation speed according to crankshaft material and big end diameter - setting crankshaft grinder wheel head position - setting chuck offsets for big end bearings and adjusting counterweights to suit - fitting crankshaft in correct direction of rotation and ensuring that critical surfaces are not damaged by the chuck - measuring journal diameters during grinding with constant measuring gauge
  • procedures for adjusting crankshaft grinder to suit main bearing journal grinding, including: - removing crankshaft from grinder - fitting crankshaft in correct direction of rotation - setting datum in relation to rear flange and nose for main bearing grinding
  • procedures for main bearing journal grinding, including: - setting crankshaft rotation speed according to crankshaft material and journal size - setting crankshaft grinder wheel head position - measuring journal diameters during grinding with constant measuring gauge
  • procedures for finishing journal grinding, including: - chamfering and dressing oil holes - linishing journals according to grade of belt, required finish, and rotational direction - setting up and facing flange ends and seal areas - final grinding inspections of crankshaft, including: - journal surface finish - taper, ovality, barrelling, and hourglass - grinding chatter - burning of radius and journals - methods of correcting faults
  • procedures for removing crankshaft from grinder and checking crankshaft for straightness in V blocks using dial indicator
  • requirements of Australian standards relating 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 operations, including rust protection of machined surfaces.

Foundation skills

  • Learning skills to:: locate appropriate sources of information efficiently.
  • Reading skills to:: interpret crankshaft specifications from workshop literature interpret machinery safe operating procedures from operating manuals.
  • Writing skills to:: legibly and accurately fill out workplace documentation to record measurements.
  • Numeracy skills to:: interpret numerical information in manufacturer specifications, workshop literature, and machinery dials, gauges and computer readouts use basic mathematical operations, including addition and subtraction, to: convert metric dimensions to imperial, and imperial dimensions to metric calculate tolerances and clearances.
  • Planning and organising skills to:: select best tooling option for the work and sequence procedure to reduce time and material wastage.
  • Technology skills to:: use metric and imperial precision measuring equipment.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing AURTTM007

What does an assessment tool for AURTTM007 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for AURTTM007 needs to address all 53 unit components: 5 elements with 33 performance criteria, 1 performance evidence requirements, 13 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for AURTTM007?

Auditori pulls the current release of AURTTM007 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for AURTTM007 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing AURTTM007 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of AURTTM007, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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