Modification History
Not Applicable
Unit Descriptor
Unit descriptor |
This unit covers testing, fault finding and rectifying basic fluid power systems used in the earthmoving, agricultural and transport industries. |
Application of the Unit
Application of the unit |
The general servicing of systems is also covered by this unit and includes fluid replacement, filtration requirements and oil sampling. This competency does not cover skills required in the design or modification of systems, component re-manufacture or the diagnosis, maintenance and repair of control systems (solenoid and electro proportional systems). If these skills are required, then Units MEM18023B (Modify fluid power system operation), MEM18047B (Diagnose and maintain electronic controlling systems on mobile plant) and MEM18053B (Modify fluid power control systems) should be selected as appropriate. Where Unit MEM18020B (Maintain hydraulic system components) and/or MEM18021B (Maintain hydraulic systems) are selected, this unit should not be selected. Band : A Unit Weight : 4 |
Licensing/Regulatory Information
Not Applicable
Pre-Requisites
Prerequisite units |
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Path 1 |
MEM09002B |
Interpret technical drawing |
MEM12023A |
Perform engineering measurements |
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MEM18001C |
Use hand tools |
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MEM18002B |
Use power tools/hand held operations |
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MEM18055B |
Dismantle, replace and assemble engineering components |
Employability Skills Information
Employability skills |
This unit contains employability skills. |
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Secure system from potentially hazardous situations |
1.1. Sources of stored energy are identified. 1.2. Mobile plant is assessed for potentially hazardous situations and conditions. 1.3. Accumulators and position actuators are bled down to remove stored energy as per manufacturers' instructions. |
2. Check hydraulic system components |
2.1. System components are identified correctly, using appropriate circuit diagrams or manufacturers' instruction. 2.2. Faults are traced and localised with reference to manufacturer troubleshooting procedures and flow charts. 2.3. The operational function of components is inspected and tested in accordance with standard operating procedures. |
3. Replace faulty system components |
3.1. Faulty components are correctly removed from system using appropriate tools, techniques and procedures. 3.2. Replacement components are sourced where appropriate from manufacturer/supplier. 3.3. Hoses, tubes and pipework are prepared and assembled using appropriate tools, techniques and procedures. 3.4. Replacement components and conductors are correctly assembled and refitted to system. 3.5. System is tested and adjusted for correct operation according to standard operating procedures. |
4. Dismantle, inspect and rectify linear actuators |
4.1. Hydraulic cylinders and rams are dismantled using appropriate tools, techniques and procedures. 4.2. Component parts are evaluated for condition. 4.3. Seals and bearings are fitted as per manufacturer specifications. 4.4. Cylinders/rams are reassembled and fitted as per manufacturer instructions. 4.5. Assembly is tested by use of machine circuit or equivalent. |
5. Service hydraulic systems |
5.1. Hydraulic systems are serviced according to manufacturers' schedules and instructions. |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
This section describes the skills and knowledge required for this unit. |
Required skills |
Look for evidence that confirms skills in:
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Required knowledge |
Look for evidence that confirms knowledge of:
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Evidence Guide
EVIDENCE GUIDE |
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The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. |
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Overview of assessment |
A person who demonstrates competency in this unit must be able to maintain fluid power systems for mobile plant. Competency in this unit cannot be claimed until all prerequisites have been satisfied. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit |
Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts. |
Context of and specific resources for assessment |
This unit may be assessed on the job, off the job or a combination of both. Where assessment occurs off the job, i.e. the candidate is not in productive work, an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate. This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with maintaining fluid power systems for mobile plant, or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment |
Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. |
Guidance information for assessment |
Range Statement
RANGE STATEMENT |
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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
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Check |
Pressure and flow testing, cycle times, basic interrogation of diagnostic system and basic electronic servicing |
Components |
Hoses, pipes, actuators, pumps, valves, cylinders and rams |
Service of hydraulic systems |
Change out of hydraulic components such as pumps, valves and actuators and the associated remedial actions required such as system flushing and purging and setting of component parameters |
Rectify |
May include the assembly and fitting of hydraulic hoses, tubing and pipework. Resealing and repairs to cylinders and rams. |
Unit Sector(s)
Unit sector |
Co-requisite units
Co-requisite units |
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Competency field
Competency field |
Maintenance and diagnostics |