Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MEM27017 Mapping and Delivery Guide
Maintain, fault find and rectify hydraulic systems for mobile plant

Version 1.0
Issue Date: June 2024


Qualification -
Unit of Competency MEM27017 - Maintain, fault find and rectify hydraulic systems for mobile plant
Description
Employability Skills
Learning Outcomes and Application This unit of competency defines the skills and knowledge required to test, fault find and rectify hydraulic systems used in the earthmoving, agricultural and transport industries. It covers identifying the hydraulic system and components used on mobile plant, general servicing and identifying faults that are related to electronic and fieldbus controls and communication.Where the rectification of electronic controls is required unit MEM27016 Diagnose and maintain electronic controlling systems on mobile and stationary plant should also be selected.Where the rectification of communication systems is required unit MEM27018 test, diagnose and rectify mobile and stationary plant external monitoring and control systems should also be selected.Where the rectification of fieldbus controls is required unit MEM27023 Diagnose and rectify fieldbus circuits in mobile and stationary plant and equipment should also be selected.No licensing, legislative or certification requirements apply to this unit at the time of publication.Band: AUnit Weight: 4
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites
Competency Field Fixed and Mobile Plant
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Determine job requirements
  • Follow standard operating procedures (SOPs)
       
Element: Comply with work health and safety (WHS) requirements at all times
       
Element: Use appropriate personal protective equipment (PPE) in accordance with SOPs
       
Element: Identify job requirements from specifications, drawings, job sheets or work instructions
       
Element: Secure system from potentially hazardous situations
  • Identify sources of stored energy and assess mobile plant for potentially hazardous situations and conditions
       
Element: Bleed down accumulators and position actuators to remove stored energy in accordance with manufacturer instructions
       
Element: Identify equipment hydraulic systems and relevant operational data
  • Check specifications and drawings for mobile equipment systems, actuators and accessories dependent on hydraulic power
       
Element: Identify control modules and fieldbus wiring locations for hydraulic systems
       
Element: Consult equipment operator where appropriate and collect additional data on equipment performance and faults
       
Element: Check previous maintenance reports and preventative maintenance schedules and review for additional fault-finding data
       
Element: Check hydraulic system components and fluid
  • Identify system components using appropriate circuit diagrams or manufacturer instructions
       
Element: Inspect equipment for obvious faults, leaks and contamination
       
Element: Access, inspect and test the operational function of components in accordance with SOPs
       
Element: Trace and localise faults with reference to manufacturer troubleshooting procedures, including using accessing and interpreting fault codes in controllers
       
Element: Determine parts that require repair or replacement
       
Element: Check hydraulic fluid and components for signs of contamination
       
Element: Rectify component faults
  • Remove faulty components from system using appropriate tools, procedures and techniques
       
Element: Source replacement components from manufacturer/supplier
       
Element: Prepare and assemble hoses, tubes and pipework
       
Element: Assemble and refit replacement components and conductors to system
       
Element: Replace filter or fluid where required
       
Element: Test and adjust system for correct operation according to SOPs
       
Element: Dismantle, inspect and rectify linear actuators
  • Dismantle hydraulic cylinders and rams using appropriate tools, procedures and techniques
       
Element: Evaluate component parts for condition
       
Element: Fit seals and bearings in accordance with manufacturer specifications
       
Element: Reassemble and fit cylinders/rams in accordance with manufacturer instructions
       
Element: Test assembly in accordance with manufacturer instructions
       
Element: Complete maintenance and fault rectification work
  • Perform scheduled preventive maintenance and other hydraulic systems servicing according to manufacturer schedules and instructions
       
Element: Verify correct operation of the system using fluid power principles and manufacturer instructions
       
Element: Instigate appropriate follow-up procedures
       
Element: Update maintenance and service records
       

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

This field allows for different 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.

General servicing includes the following:

fluid replacement

filtration requirements

oil sampling

checking for and rectifying faults

preventative maintenance

checks and adjustments to suit changes in operating conditions

Hydraulic systems include the following:

open circuit

closed circuit

systems used for one (1) or more of the following:

direct motive power

powering actuators

braking

transmissions and gearboxes

pumping

Contaminants include one (1) or more of the following:

dirt

metal particles

other particulates

water

fuel

non-hydraulic oil

Rectifying includes the following:

replacement of components and fittings

filtering or replacement of hydraulic fluid

assembly and fitting of hydraulic hoses

flushing/cleaning of tubing and pipework

resealing and repairs to cylinders and rams

resetting of controls

Checks include one (1) or more of the following:

pressure and flow testing

cycle times

basic interrogation of diagnostic system controllers

basic electronic servicing

Components include one (1) or more of the following:

actuators

fixed and variable displacement pumps

pressure, directional and flow control valves

electro-hydraulic servo and servo-proportional valve (EHSV)

hydraulic motors

reservoirs

contamination control components (filtration)

fluid conductors/fittings

other associated equipment

Service of hydraulic systemsinclude the following:

change out of hydraulic components, including:

pumps

valves

actuators

the associated remedial actions required, including:

system flushing and purging

setting of component parameters

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Follow standard operating procedures (SOPs) 
 
 
 
Identify sources of stored energy and assess mobile plant for potentially hazardous situations and conditions 
 
Check specifications and drawings for mobile equipment systems, actuators and accessories dependent on hydraulic power 
 
 
 
Identify system components using appropriate circuit diagrams or manufacturer instructions 
 
 
 
 
 
Remove faulty components from system using appropriate tools, procedures and techniques 
 
 
 
 
 
Dismantle hydraulic cylinders and rams using appropriate tools, procedures and techniques 
 
 
 
 
Perform scheduled preventive maintenance and other hydraulic systems servicing according to manufacturer schedules and instructions 
 
 
 

Forms

Assessment Cover Sheet

MEM27017 - Maintain, fault find and rectify hydraulic systems for mobile plant
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

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

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: