Assessment Requirements for MEM27017 Maintain, fault find and rectify hydraulic systems for mobile plant

Release: 1

Assessment Requirements for MEM27017 Maintain, fault find and rectify hydraulic systems for mobile plant

Modification History

Release 1. Supersedes and is equivalent to MEM18052B Maintain fluid power systems for mobile plant

Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

identifying and interpreting specifications, charts, lists, drawings and other applicable reference documents to maintain hydraulic systems on mobile plant

identifying sources of stored energy and hazardous situations/conditions, including bleeding down accumulators and position actuators, and applying appropriate safety measures

fault finding hydraulic system down to component level using appropriate fluid power principles and procedures

inspecting and testing components using appropriate equipment in accordance with procedures

identifying and tracing fieldbus circuits and control modules related to hydraulic systems on equipment

removing/refitting faulty components to system, including pipes, hoses, conductors and fittings and where appropriate cutting and assembling conductors to length using appropriate tooling/machine, techniques and procedures

undertaking calculation and numerical operations associated with maintaining fluid power systems on mobile plant

testing and adjusting replacement components for correct operation and compliance to specifications

dismantling linear actuators without damage using appropriate tools, techniques/procedures and safety measures and using specifications to identify performance/condition of cylinders and rams for wear and damage

fitting seals and bearings and reassembling cylinder/ram in accordance with manufacturer instructions

refitting and testing assembly to machine and verifying repairs on machine circuit and/or test rig to specifications

carrying out general servicing of hydraulic system in accordance with manufacturer instructions

recording/reporting service activities in accordance with SOPs.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

safe work practices and procedures and use of personal protective equipment (PPE)

different sources of stored energy and their applications and reasons for bleeding accumulators and actuators and the hazards associated with working on pressurised systems

open circuit hydraulic systems, including:

applications

fixed displacement pump systems, including simple Open centre DCV systems and closed centre with bypass (3 port) compensator inlet

variable displacement pump systems, including pre and post-compensated systems

open centre systems

pump control systems, including proportional displacement control for open circuit pumps

common faults and preventative maintenance

closed circuit systems, including:

applications

simple fixed/variable pumps with manual control

common faults and preventative maintenance

full range of hydraulic system components in a mobile plant application

information on circuit diagram or manufacturer instructions

characteristics and operational function of each system component

impact of other equipment systems on the hydraulic system

methods and techniques for tracing and localising faults and problems and reasons relating to faulty hydraulic system components/ operation in accordance with specifications

procedures for:

inspecting and testing hydraulic system components and equipment to be used

checking and adjusting the system

dismantling linear actuators and tools, techniques, procedures and safety measures to be used

fitting bearings and seals

reassembly/fitting of cylinder/ram and sequence to be used

testing and verifying repairs using machine circuits and/or test rigs and necessary remedial action

common faults in hydraulic components

specifications and correct operation of each hydraulic system component and conductors

removal methods for various components

information in catalogues or electronic media and procedures to obtain replacement parts

typical conductor types and fittings their applications

methods for cutting/assembling hoses/tubes/pipework

tools and techniques for fitting replacement components and conductors

methods of inspection and measurement and guides and specifications for reusable parts

manufacturer scheduled service timeframes, service items and service procedures.

Assessment Conditions

Assessors must:

have vocational competency in maintaining, fault finding and rectifying hydraulic systems for mobile plant at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires

Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions. This must cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills

Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b7050d37-5fd0-4740-8f7d-3b7a49c10bb2