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ព្រះរាជាណាចក្រកម្ពុជា · KINGDOM OF CAMBODIA

Cambodian Skills Delivery Model

SEAL National Course Catalogue · MLVT / National Training Board

Sector Frameworks

1,164

Qualifications

15,161

Competency Units

10,938

Elements

41,782

Learning Outcomes

2,822

Assessment Packages

Repair bearing tunnels and connecting rods in engines

KHU-AUT-0428

Australian Equivalent

AURTTM002

Elements

Learning Outcomes

This unit describes the performance outcomes required to repair bearing tunnels and connecting rods in engines. It involves preparing for the task, line boring and honing engine bearing tunnels, repairing connecting rods to specifications and workplace requirements in an engine reconditioning process, and completing workplace processes and documentation. It applies to those working in the automotive service and repair industry. The engine components 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

E1Determine line boring requirements

0428.E1.O1Job requirements are determined from workplace instructions

0428.E1.O2Engine block is cleaned and main bearing bolt holes are crack tested according to workplace procedures and safety requirements

0428.E1.O3Information is sourced and repair options are analysed and those most appropriate to the circumstances are selected

0428.E1.O4Required tools and measuring equipment are checked and prepared for operation according to manufacturer specifications and workplace procedures

0428.E1.O5Hazards associated with the work are identified and risks are managed

E2Prepare engine and line boring machine

0428.E2.O1Engine is measured and calibration requirements for line boring are determined

0428.E2.O2Engine block or cylinder head is prepared for line boring according to workplace procedures and safety and environmental requirements

0428.E2.O3Line boring machine is prepared to accept cylinder engine block or cylinder head according to manufacturer specifications and workplace procedures

0428.E2.O4Engine block or cylinder head is positioned and clamped according to manufacturer specifications and workplace procedures

E3Line bore engine bearing tunnels

0428.E3.O1Tool is set and locked and a test cut is taken according to workplace procedures and safety requirements, and following machinery safe operating procedures

0428.E3.O2Engine tunnels are line bored at correct speeds and feed rates according to workplace procedures and safety requirements, and following machinery safe operating procedures

0428.E3.O3Line boring tool sharpness is checked and maintained throughout boring operation according to manufacturer specifications and workplace procedures

0428.E3.O4Engine block thrust faces and seal diameter are machined to original size

0428.E3.O5Tunnels are measured to ensure compliance with manufacturer specifications

0428.E3.O6Line boring operations are completed according to required specifications and honing allowances, workplace procedures and safety requirements, and following machinery safe operating procedures

E4Prepare to hone engine bearing tunnels

0428.E4.O1Line-bored engine block or cylinder head is cleaned of residue and swarf according to workplace procedures and safety requirements

0428.E4.O2Tools and equipment for honing are selected and checked for serviceability

0428.E4.O3Measuring and calibration requirements for honing are determined

0428.E4.O4Honing machine is prepared to accept engine block or cylinder head according to manufacturer specifications and workplace procedures

0428.E4.O5Engine block or cylinder head is positioned and securely clamped, and required hone stroke is set according to manufacturer specifications and workplace procedures

0428.E4.O6Hone stones are selected and speed is set to achieve required finish

E5Hone engine bearing tunnels

0428.E5.O1Tunnels are honed at correct speed and rate to required finish according to workplace procedures and safety requirements, and following machinery safe operating procedures

0428.E5.O2Components are measured to ensure compliance with manufacturer specifications

0428.E5.O3Honing operations are completed to required tunnel to journal clearance according to workplace procedures and safety requirements, and following machinery safe operating procedures

E6Prepare to repair connecting rods

0428.E6.O1Connecting rods are cleaned and checked for serviceability according to workplace procedures and safety requirements

0428.E6.O2Connecting rods are checked for straightness and straightened as required according to workplace procedures and safety requirements, and following machinery safe operating procedures

0428.E6.O3Connecting rod boring machine is prepared to accept connecting rod

0428.E6.O4Connecting rod is positioned ready for honing, and securely clamped if machining

E7Repair connecting rod

0428.E7.O1Connecting rod little ends and big ends are resized according to workplace procedures and safety requirements, and following machinery safe operating procedures

0428.E7.O2Components are measured to ensure compliance with manufacturer specifications

E8Complete repair process

0428.E8.O1Engine block or cylinder head is thoroughly cleaned of residual honing oil according to workplace procedures

0428.E8.O2Final inspection is made to ensure finished work complies with workplace requirements

0428.E8.O3Bright surfaces are treated with rust prevention solution and engine block or cylinder head is prepared for further process or storage according to workplace procedures

0428.E8.O4Workplace documentation is processed according to workplace procedures