Elements and Performance Criteria
- Determine line boring requirements
- Job requirements are determined from workplace instructions
- Engine block is cleaned and main bearing bolt holes are crack tested according to workplace procedures and safety requirements
- Information is sourced and repair options are analysed and those most appropriate to the circumstances are selected
- Required tools and measuring equipment are checked and prepared for operation according to manufacturer specifications and workplace procedures
- Hazards associated with the work are identified and risks are managed
- Prepare engine and line boring machine
- Engine is measured and calibration requirements for line boring are determined
- Engine block or cylinder head is prepared for line boring according to workplace procedures and safety and environmental requirements
- Line boring machine is prepared to accept cylinder engine block or cylinder head according to manufacturer specifications and workplace procedures
- Engine block or cylinder head is positioned and clamped according to manufacturer specifications and workplace procedures
- Line bore engine bearing tunnels
- Tool is set and locked and a test cut is taken according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Engine tunnels are line bored at correct speeds and feed rates according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Line boring tool sharpness is checked and maintained throughout boring operation according to manufacturer specifications and workplace procedures
- Engine block thrust faces and seal diameter are machined to original size
- Tunnels are measured to ensure compliance with manufacturer specifications
- Line boring operations are completed according to required specifications and honing allowances, workplace procedures and safety requirements, and following machinery safe operating procedures
- Prepare to hone engine bearing tunnels
- Line-bored engine block or cylinder head is cleaned of residue and swarf according to workplace procedures and safety requirements
- Tools and equipment for honing are selected and checked for serviceability
- Measuring and calibration requirements for honing are determined
- Honing machine is prepared to accept engine block or cylinder head according to manufacturer specifications and workplace procedures
- Engine block or cylinder head is positioned and securely clamped, and required hone stroke is set according to manufacturer specifications and workplace procedures
- Hone stones are selected and speed is set to achieve required finish
- Hone engine bearing tunnels
- Tunnels are honed at correct speed and rate to required finish according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Components are measured to ensure compliance with manufacturer specifications
- Honing operations are completed to required tunnel to journal clearance according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Prepare to repair connecting rods
- Connecting rods are cleaned and checked for serviceability according to workplace procedures and safety requirements
- Connecting rods are checked for straightness and straightened as required according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Connecting rod boring machine is prepared to accept connecting rod
- Connecting rod is positioned ready for honing, and securely clamped if machining
- Repair connecting rod
- Complete repair process
- Engine block or cylinder head is thoroughly cleaned of residual honing oil according to workplace procedures
- Final inspection is made to ensure finished work complies with workplace requirements
- Bright surfaces are treated with rust prevention solution and engine block or cylinder head is prepared for further process or storage according to workplace procedures
- Workplace documentation is processed according to workplace procedures
- Determine line boring requirements
- Job requirements are determined from workplace instructions
- Engine block is cleaned and main bearing bolt holes are crack tested according to workplace procedures and safety requirements
- Information is sourced and repair options are analysed and those most appropriate to the circumstances are selected
- Required tools and measuring equipment are checked and prepared for operation according to manufacturer specifications and workplace procedures
- Hazards associated with the work are identified and risks are managed
- Prepare engine and line boring machine
- Engine is measured and calibration requirements for line boring are determined
- Engine block or cylinder head is prepared for line boring according to workplace procedures and safety and environmental requirements
- Line boring machine is prepared to accept cylinder engine block or cylinder head according to manufacturer specifications and workplace procedures
- Engine block or cylinder head is positioned and clamped according to manufacturer specifications and workplace procedures
- Line bore engine bearing tunnels
- Tool is set and locked and a test cut is taken according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Engine tunnels are line bored at correct speeds and feed rates according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Line boring tool sharpness is checked and maintained throughout boring operation according to manufacturer specifications and workplace procedures
- Engine block thrust faces and seal diameter are machined to original size
- Tunnels are measured to ensure compliance with manufacturer specifications
- Line boring operations are completed according to required specifications and honing allowances, workplace procedures and safety requirements, and following machinery safe operating procedures
- Prepare to hone engine bearing tunnels
- Line-bored engine block or cylinder head is cleaned of residue and swarf according to workplace procedures and safety requirements
- Tools and equipment for honing are selected and checked for serviceability
- Measuring and calibration requirements for honing are determined
- Honing machine is prepared to accept engine block or cylinder head according to manufacturer specifications and workplace procedures
- Engine block or cylinder head is positioned and securely clamped, and required hone stroke is set according to manufacturer specifications and workplace procedures
- Hone stones are selected and speed is set to achieve required finish
- Hone engine bearing tunnels
- Tunnels are honed at correct speed and rate to required finish according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Components are measured to ensure compliance with manufacturer specifications
- Honing operations are completed to required tunnel to journal clearance according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Prepare to repair connecting rods
- Connecting rods are cleaned and checked for serviceability according to workplace procedures and safety requirements
- Connecting rods are checked for straightness and straightened as required according to workplace procedures and safety requirements, and following machinery safe operating procedures
- Connecting rod boring machine is prepared to accept connecting rod
- Connecting rod is positioned ready for honing, and securely clamped if machining
- Repair connecting rod
- Complete repair process
- Engine block or cylinder head is thoroughly cleaned of residual honing oil according to workplace procedures
- Final inspection is made to ensure finished work complies with workplace requirements
- Bright surfaces are treated with rust prevention solution and engine block or cylinder head is prepared for further process or storage according to workplace procedures
- Workplace documentation is processed according to workplace procedures