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 light vehicle hydraulic braking systems, including procedures for:
lifting and supporting light vehicles
handling and controlling brake dust and brake fluids
environmental requirements, including procedures for trapping, storing and disposing of brake dust and brake fluid released from hydraulic braking systems
operating principles of light vehicle hydraulic braking systems and associated components, including:
levers
friction
hydraulics, including the relationship between force, pressure and area
properties of brake fluids, including:
Department of Transportation (DOT) classification
synthetic and non-synthetic
compatibility of fluid types
application, purpose and operation of light vehicle hydraulic braking systems and components, including:
front and rear split systems
diagonal split systems
master cylinders, including:
tandem master cylinders
compensating-type master cylinders
centre-valve master cylinders
drum braking system and components, including:
self-energising or servo effect
leading and trailing shoe braking systems
duo-servo braking systems
two-leading shoe braking systems
wheel cylinders
manual and self-adjustment systems of drum braking systems
disc braking systems and components, including:
types of brake discs
disc pads
self-adjustment of disc pads
fixed, floating and dual-piston brake calipers
parking brake systems and components, including:
parking brake levers
drum parking brakes
disc parking brakes
electronic parking brake systems
braking system valves and switches, including:
pressure differential valves and switches
proportioning valves
load-sensing proportioning valves
drum brake check valves
fluid-level warning devices
vacuum operated brake boosting systems
diagnostic testing procedures for light vehicle hydraulic braking systems, including procedures for:
checking brake pedal
operational tests of brake booster
operational tests of master cylinder
testing brake fluid
operational tests of hand brake
operational tests of drum and disc brakes
measuring and evaluating brake drums, shoes, discs and pads
repair procedures for light vehicle hydraulic braking systems, including procedures for:
removing, replacing and adjusting hydraulic system components, including master cylinder, proportioning valves, switches, brake hoses and lines, disc calipers and wheel cylinders
removing, replacing and adjusting braking system components, including brake booster, master cylinder, hand brake lever and cables, brake shoes and drums, brake pads and brake discs
bleeding brakes, including anti-lock braking systems (ABS)
post-repair testing procedures for light vehicle hydraulic braking systems, including procedures for road testing and bedding in brakes.
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 light vehicle hydraulic braking systems 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 braking system specifications
two different light vehicles with four-wheel hydraulic disc brake systems with faults
one light vehicle with a rear drum brake system
diagnostic equipment for light vehicle hydraulic braking systems
tools, equipment and materials appropriate for repairing light vehicle braking systems.