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Elements and Performance Criteria

  1. Prepare to diagnose and repair mobile plant braking system
  2. Diagnose braking system
  3. Repair braking system
  4. Complete work processes
  5. Prepare to diagnose and repair mobile plant braking system
  6. Diagnose braking system
  7. Repair braking system
  8. Complete work processes

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.

Safety and environmental requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for:

working with high fluid pressure and high pneumatic pressure

working with stored hydraulic accumulator pressures and stored pneumatic pressures

isolating and stabilising machines

environmental requirements, including procedures for trapping, storing and disposing of hydraulic fluids, brake fluids and brake fibres released from braking systems.


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 two different spring applied hydraulically released mobile plant braking systems

diagnose and repair a fault in one of the following mobile plant braking systems:

hydraulic applied

full air actuated

air over full hydraulic.


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 mobile plant braking systems, including procedures for:

working with high fluid pressure and high pneumatic pressure

working with stored hydraulic accumulator pressures and stored pneumatic pressures

isolating and stabilising machines

environmental requirements, including procedures for trapping, storing and disposing of hydraulic fluids, brake fluids and brake fibres released from braking systems

operating principles of mobile plant braking systems and associated components, including:

levers

friction

pneumatics

hydraulics, including the relationship between force, pressure and area

mobile plant braking systems, including:

multi-disc wet braking systems, including associated cooling systems

disc braking systems

parking brake systems

application, purpose and operation of mobile plant braking systems and components, including:

air over full hydraulic

full air actuated

hydraulic applied

spring applied hydraulically released

diagnostic testing procedures for mobile plant braking systems, including:

component wear analysis

system operation analysis

repair procedures for mobile plant braking systems, including procedures for repairing and adjusting the following braking system components:

multi-disc wet braking systems, including wheel end and inboard mounted

disc braking systems

parking brake systems

post-repair testing procedures for mobile plant braking systems.