Assessor Resource

MEM21021A
Restore clockwork mechanisms

Assessment tool

Version 1.0
Issue Date: May 2024


This unit of competency applies to restoration and repair work on clock escapements and servicing of power equalisation systems undertaken in clock service and repair workshops. This work would normally be undertaken by specialist clock repairers. The unit includes restoration and repair work to antique clocks where parts are no longer available.

For machine manufacture of clock components, MEM21022A Manufacture watch and clock components, should also be selected.

Band: B

Unit weight: 6 points

This unit of competency covers restoring and repairing clock components by manufacturing parts using hand skills and machine tools. It also covers servicing power equalisation systems.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

MEM21020A

Service and repair clock chiming mechanisms

MEM21019A

Service and repair clock striking mechanisms

MEM21017A

Service and repair clock timepieces

MEM18001C

Use hand tools

MEM09002B

Interpret technical drawing

MEM06007B

Perform basic incidental heat/quenching, tempering and annealing

Employability Skills

This unit contains employability skills.



Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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.

Overview of assessment

A person who demonstrates competency in this unit must be able to restore clockwork mechanisms to industry standards, manufacturer specifications and in accordance with safety regulations and procedures.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently:

manufacture by hand and fit replacement parts to specification

plan and conduct repairs to maintain originality of timepiece

dismantle, assemble and set up fusee systems.

Context of and specific resources for assessment

Assessment may occur on the job or in an appropriately simulated environment. Access is required to real or appropriately simulated situations, including work areas, materials and equipment, and information on workplace practices and OHS practices.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure its correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, 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.

Required skills

Required skills include:

saw piercing

transferring designs

precision filing

component fitting

dismantling, reassembling and setting up power equalisation devices

measuring components

re-pivoting arbors

Required knowledge

Required knowledge includes:

clock design and manufacture

gear forms (e.g. cycloidal and involute)

gear terminology (e.g. pitch and root diameter)

types and uses of files, including shapes and cuts

jewellers saws and blades

metal types and applications to clock components

power equalisation devices and their function

finishing and polishing techniques and media

occupational health and safety (OHS) regulations and procedures

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.

Clock design and manufacture

Clock design and manufacture may include:

remaining faithful to original design and finish

accounting for value and provenance

maintaining originality of parts

Record and document repair

Record and document repair may include:

date and extent of repair

cost of replacement part

time spent on procedure

Working drawings and templates

Working drawings and templates may include:

sketch or illustration by hand

photocopy original component then adhere to stock

Appropriate tools and equipment

Appropriate tools and equipment may include:

files

burnishers

oil stones

jewellers saw

finishing papers

needle files

marking out equipment

lathe/drilling tailstock

Produce components by hand

Produce components by hand may include:

hands

pallets

striking and chiming levers

ratchet wheels

clickwork

taper pins

Heat treatment

Heat treatment may include:

annealing

hardening

tempering (bluing)

Refinishing process

Refinishing process may include:

filing

honing

graining and polishing

Clock components

Clock components may include:

arbors and pinions

clicks

pallets

screws

taper pins

Fixing method

Fixing method may include:

loctite

low melting solder

electronic soldering iron

spirit lamp

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
Identify missing, damaged or worn parts 
Identify prior modifications and repairs, including non-standard or non-original components 
Plan repairs in consideration of original clock design and manufacture 
Record and document repair 
Identify fusee and stopwork device 
Release mainspring power 
Diagnose system faults 
Replace fusee chains or cables 
Set up fusee and stopwork systems 
Prepare working drawings and templates of replacement parts 
Plan suitable method and sequence of production 
Select materials suitable for manufacturing 
Transfer designs and mark out templates and work pieces 
Select appropriate hand tools to undertake process 
Produce components by hand to required specifications 
Conduct finishing, heat treatment, polishing of components 
Verify function of manufactured components 
Select appropriate refinishing process to repair worn or corroded clock components 
Refinish parts to replicate original finish 
Adjust refinished components for correct function 
Identify worn or damaged teeth 
Fit, file and shape replacement teeth 
Re-pivot arbors 
Secure replacement part using appropriate fixing method 
Test run with matched component 

Forms

Assessment Cover Sheet

MEM21021A - Restore clockwork mechanisms
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

MEM21021A - Restore clockwork mechanisms

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: