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ព្រះរាជាណាចក្រកម្ពុជា · KINGDOM OF CAMBODIA

Cambodian Skills Delivery Model

SEAL National Course Catalogue · MLVT / National Training Board

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1,164

Qualifications

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Competency Units

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Elements

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2,822

Assessment Packages

Carry out crankshaft grinding

KHU-AUT-0433

Australian Equivalent

AURTTM007

Elements

Learning Outcomes

This unit describes the performance outcomes required to carry out grinding operations on engine crankshafts to specific under sizes. It involves preparing for the task, determining crankshaft damage and required repair action, preparing and using grinding machines to grind crankshafts to specifications, tolerances and workplace requirements, and completing workplace processes and documentation. It applies to those working in the automotive service and repair industry. The crankshafts include those in vehicles from all sectors of the industry. No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.

Elements & Learning Outcomes

E1Prepare to grind crankshaft

0433.E1.O1Job requirements are determined from workplace instructions

0433.E1.O2Crankshaft is cleaned and inspected and condition reported

0433.E1.O3Information is sourced, procedures and methods are analysed, and appropriate crankshaft grinding machine and equipment are selected for the crankshaft

0433.E1.O4Hazards associated with the work are identified and risks are managed

0433.E1.O5Tools and measuring equipment are selected and checked for serviceability

0433.E1.O6Crankshaft grinding wheel is prepared according to machine manufacturer specifications and tolerances, and workplace procedures

0433.E1.O7Crankshaft is measured to determine under size and tolerances, including journal diameters and sizes of grind

0433.E1.O8Crankshaft is positioned in grinder in correct direction of rotation, and clamped according to manufacturer specifications and workplace procedures

E2Grind crankshaft big end bearing journals

0433.E2.O1Chuck offsets are set according to the stroke of crankshaft

0433.E2.O2Crankshaft grinder wheel head position is set according to machine manufacturer procedures

0433.E2.O3Constant measuring gauge and steady rest are positioned on big end journal taking into account position of oil hole

0433.E2.O4Crankshaft is ground at correct rotational speed for crankshaft material and diameter according to safety requirements, and following machinery safe operating procedures

0433.E2.O5Crankshaft is measured to ensure compliance with specifications and tolerances

0433.E2.O6Grinding operations are completed to required specifications and tolerances according to safety requirements, and following machinery safe operating procedures

E3Grind crankshaft main bearing journals

0433.E3.O1Crankshaft is removed from grinder

0433.E3.O2Chucks are centralised for main bearings and counterweights are adjusted

0433.E3.O3Crankshaft is refitted to grinder in correct direction of rotation, and is clamped according to manufacturer specifications and workplace procedures

0433.E3.O4Datum is set in relation to crankshaft rear flange and nose

0433.E3.O5Crankshaft grinder wheel head movement is set according to manufacturer procedures

0433.E3.O6Constant measuring gauge and steady rest are positioned on main bearing journal taking into account position of oil hole

0433.E3.O7Crankshaft is ground at correct rotational speed for crankshaft material and diameter according to safety requirements, and following machinery safe operating procedures

0433.E3.O8Crankshaft is inspected to ensure compliance with specifications and tolerances

0433.E3.O9Grinding operations are completed to required specifications and tolerances according to safety requirements, and following machinery safe operating procedures

E4Finish crankshaft grinding

0433.E4.O1Oil holes are chamfered and dressed

0433.E4.O2Journals are linished with correct grade of belt and in right direction of rotation and required finish

0433.E4.O3Flange ends and seal areas are faced

0433.E4.O4Crankshaft is examined and measured according to manufacturer specifications and tolerances, and workplace procedures

0433.E4.O5Crankshaft is cleaned according to workplace procedures

0433.E4.O6Bright surfaces are treated with rust prevention solution and crankshaft is prepared for further process or storage according to workplace procedures

E5Complete work processes

0433.E5.O1Final inspection is made to ensure finished work complies with workplace requirements and crankshaft is presented ready for use or storage

0433.E5.O2Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

0433.E5.O3Tools and equipment are checked and stored according to workplace procedures

0433.E5.O4Workplace documentation is processed according to workplace procedures