Assessment Requirements for AURTTF006 Diagnose and repair petrol carburettor systems

Release: 1

Assessment Requirements for AURTTF006 Diagnose and repair petrol carburettor systems

Modification History

Release	Comment
Release 1	New unit of competency.

Performance Evidence

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

diagnose and repair a fault in three of the following different petrol carburettor systems fitted to different vehicles or engines:

one type of variable venturi carburettor

one type of multi-barrel carburettor

one simple carburettor.

Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing petrol carburettor systems, including procedures for working with flammable petrol fuel

environmental requirements, including procedures for trapping, storing and disposing of fluids released from fuel systems

operating principles of petrol carburettor systems and associated components, including:

fuel atomisation

air-fuel ratios and combustion cycles

detonation and pre-ignition

venturi action

application, purpose and operation of petrol carburettor systems and components, including:

carburettor systems, including:

float system

idle system

fast idle system

main system

choke system

power system

accelerating system

single barrel carburettor operation, including:

mixture correction, including air-bleed, compensating jet, and metering rod mixture correction

manual and automatic choke operation

multi-barrel carburettors, including:

two-barrel and four-barrel carburettors

two-stage carburettors, including vacuum and mechanical control of second stage

diagnostic testing procedures for petrol carburettor systems, including:

fuel pump pressure, volume and vacuum testing

air-leak testing

cold-start enrichment testing

exhaust gas analysis

repair procedures for petrol carburettor systems, including procedures for:

installing fuel pumps

dismantling, cleaning, repairing and reassembling carburettors

removing, replacing and adjusting carburettors

post-repair testing procedures for petrol carburettor systems.

Assessment Conditions

Assessors must satisfy NVR/AQTF assessor requirements.

Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the carburettors that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

automotive repair workplace or simulated workplace

workplace instructions

manufacturer vehicle petrol carburettor system specifications

three different vehicles or engines with faults in the petrol carburettor systems specified in the performance evidence

diagnostic equipment for petrol carburettor systems, including an exhaust gas analyser,

tools, equipment and materials appropriate for repairing petrol carburettor systems.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.education.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

Companion Volume implementation guides are found in VETNet - https://vetnet.education.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1