Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

Range Statement

This section specifies 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. Bold italicised wording, if used in the performance criteria, is detailed below.

Calibration requirements must include:	determining depths of cuts and required honing allowances determining tunnel to journal clearance.
Preparing engine block or cylinder head must include:	removing main bearing caps from engine block machining bearing cap and engine block parting faces fitting bearing caps to required tensions.
Safety and environmental requirements must include:	work health and safety (WHS), and occupational health and safety (OHS) requirements, including: procedures for: selecting and using personal protective equipment (PPE), including safety glasses, ear protection and safety footwear using hand tools and lifting equipment operational risk assessment and treatments associated with: electrical safety of line boring and honing machinery line boring and honing machinery movement and operation environmental requirements, including procedures for trapping, storing and disposing of cooling and lubricating fluids released during machining process.
Preparing line boring machine must include:	sharpening and shaping cutting tools identifying worn and damaged cutting tools mounting and positioning cutting tools correctly using clamps, jigs and rails.
Positioning and clamping must include:	setting work piece into line boring machine and aligning work piece to centre line of boring bar using appropriate and sufficient clamping of work piece.
Setting and locking tool must include:	setting tool to required diameter locking tool according to manufacturer specifications.
Line boring at correct speeds and feed ratesmust include:	using coolant and lubricant correctly setting machining parameters to achieve job requirements and maximise tool life setting speed and feed rates for tunnel material and diameter.
Specifications and honing allowancesmust include:	consideration of speed and feed and nose radius of boring tool.
Cleaning and checking for serviceability must include:	crack testing connecting rod measuring little end and big end size checking big end fitment in connecting rod.

Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unitâ€™s elements, performance criteria, range of conditions and foundation skills:

set up the following multi-cylinder engine configurations on a line boring machine:

a V configured engine

an in-line configured engine

line bore the main bearing tunnels of a cylinder block, including each of the following:

relocating a main bearing cap

fitting a semi-finished main bearing cap

sleeving a main bearing tunnel

repair camshaft bearing tunnels of an overhead camshaft cylinder head

repair full set of connecting rods

repair one connecting rod with a stepped parting face.

Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS), and occupational health and safety (OHS) requirements relating to repairing bearing tunnels and connecting rods in engines, including:

procedures for:

selecting and using personal protective equipment (PPE), including safety glasses, ear protection and safety footwear

using hand tools and lifting equipment

operational risk assessment and treatments associated with:

electrical safety of line boring and honing machinery

line boring and honing machinery movement and operation

environmental requirements, including procedures for trapping, storing and disposing of cooling and lubricating fluids released during machining process

types, characteristics and limitations of line boring and honing machines, including:

types and grades of boring tools

types and grades of honing stones

tool sharpening and dressing methods, including:

maintaining sharpness of tools throughout boring operations

dressing procedures for stones

line boring methods and procedures, including:

preparing line borer to accept engine block or cylinder head

setting engine block or cylinder head into line boring machine and aligning to centre line of boring bar

setting line boring tool to correct diameter and locking boring tool

welding and relocating main bearing caps

machining top and bottom of bearing caps

machining parting faces of cylinder head camshaft bearing

line boring cylinder head camshaft tunnels

line boring damaged tunnels to oversize to accept sleeving operation

machining parting faces of cylinder block

line boring cylinder block tunnels to accept oversized back bearings

line boring tunnels to leave a honing allowance

line boring rear main bearing areas and thrust bearing diameters to original size

machining and squaring thrust faces in engine blocks

line boring semi-finished camshaft bearings

line honing methods and procedures, including:

procedures for setting diameter of honing stone

rotational and oscillating speeds of honing bar

connecting rod repair methods and procedures, including:

removing rod eye bush and measuring rod eye bore

checking alignment of connecting rod and straightening connecting rod

boring rod eye for oversized bush

removing cap bolts and nuts and machining parting faces on connecting rod and big end cap, including cracked rods

resizing big end for standard and oversize back bearings

fitting new little end bushes and pin boring little ends

types and application of cleaning and lubricating agents

requirements of Australian standards relevant to engine reconditioning, including:

AS 4182 Automotive repairs â€“ Code of practice for reconditioning reciprocating spark ignition engines

AS 4427 Automotive repairs â€“ Code of practice for reconditioning reciprocating compression ignition engines

post-repair operations, including rust protection of machined surfaces.