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Evidence Guide: MEM21009A - Inspect, diagnose, adjust and repair mechanical watches

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM21009A - Inspect, diagnose, adjust and repair mechanical watches

What evidence can you provide to prove your understanding of each of the following citeria?

Establish servicing requirements

  1. Identify watch construction, function and characteristics
  2. Source manufacturer technical guidance information to determine correct tolerances and specifications
  3. Prepare watch for handover
  4. Record and document repair process
Identify watch construction, function and characteristics

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Source manufacturer technical guidance information to determine correct tolerances and specifications

Completed
Date:

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Prepare watch for handover

Completed
Date:

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Record and document repair process

Completed
Date:

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Inspect mechanical watches

  1. Undertake inspections of watch movements in accordance with manufacturer tolerances and procedures
  2. Make accurate observations of the condition and function of components and sub-assemblies
  3. Remove and replace components and sub-assemblies in a sequence designed to accurately assess condition and faults during the process of dismantling and assembling
  4. Inspect lubrication quantity and condition
Undertake inspections of watch movements in accordance with manufacturer tolerances and procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Make accurate observations of the condition and function of components and sub-assemblies

Completed
Date:

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Remove and replace components and sub-assemblies in a sequence designed to accurately assess condition and faults during the process of dismantling and assembling

Completed
Date:

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Inspect lubrication quantity and condition

Completed
Date:

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Diagnose faults in mechanical watches

  1. Evaluate observations and watch performance characteristics to determine appropriate repair procedure
  2. Analyse timekeeping performance using appropriate techniques and equipment
  3. Make alterations in a logical sequence to diagnose faults
Evaluate observations and watch performance characteristics to determine appropriate repair procedure

Completed
Date:

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Analyse timekeeping performance using appropriate techniques and equipment

Completed
Date:

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Make alterations in a logical sequence to diagnose faults

Completed
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Repair and adjust mechanical watches

  1. Select and use appropriate hand tools
  2. Undertake dismantling and reassembling of watch movements according to industry standard procedures and manufacturer guidelines
  3. Make precise corrections to sub-assemblies
  4. Remove, dismantle, replace and reassemble sub-assemblies and components in correct order without damaging or marking
  5. Select appropriate replacement components
Select and use appropriate hand tools

Completed
Date:

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Undertake dismantling and reassembling of watch movements according to industry standard procedures and manufacturer guidelines

Completed
Date:

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Make precise corrections to sub-assemblies

Completed
Date:

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Remove, dismantle, replace and reassemble sub-assemblies and components in correct order without damaging or marking

Completed
Date:

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Select appropriate replacement components

Completed
Date:

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Test and adjust watch function and performance

  1. Verify and confirm function of watch movement and sub-assemblies
  2. Verify watch performance and rate testing
  3. Adjust, as required, according to manufacturer specifications
  4. Repeat testing, as required, to confirm performance
Verify and confirm function of watch movement and sub-assemblies

Completed
Date:

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Verify watch performance and rate testing

Completed
Date:

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Adjust, as required, according to manufacturer specifications

Completed
Date:

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Repeat testing, as required, to confirm performance

Completed
Date:

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Apply industry workshop standards to perform work

  1. Use hand tools and equipment safely and correctly
  2. Handle components without damaging or marking
  3. Establish a clean and safe work environment
Use hand tools and equipment safely and correctly

Completed
Date:

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Handle components without damaging or marking

Completed
Date:

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Establish a clean and safe work environment

Completed
Date:

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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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 inspect and evaluate the condition and performance of mechanical watches, diagnose faults and make repairs and adjustments 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:

apply dextrous hand skills to manipulate components and sub-assemblies

select and use appropriate bench tools when adjusting

interpret readings and make accurate observations to recognise faults

determine appropriate sequence to accurately assess condition and faults during the process of dismantling and assembly.

Context of and specific resources for assessment

Assessment may occur on the job or in a simulated working 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.

Required Skills and Knowledge

Required skills

Required skills include:

good manual dexterity

assembling and dismantling in accordance with procedures and manufacturer guidelines of mechanical watches including movements

undertaking inspection and adjustment of watch mechanisms and sub-assemblies, including:

escapement end shake and freedom checks

observation of gear train backlash

wear checks

performing timekeeping analysis and adjustment techniques

Required knowledge

Required knowledge includes:

function and operating principles of mechanical watches:

mainspring

gear train

escapement

oscillator

winding and setting mechanisms

procedures for fault-finding and inspection of watch mechanisms and sub-assemblies

manufacturer specifications and tolerances for performance and timekeeping

Range Statement

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.

Watch construction, function and characteristics

Watch construction, function and characteristics may include:

mainspring variation of motive force

gear train freedom (e.g. end shakes, side shakes and backlash)

escapement operation performance

oscillator amplitude, balance spring positional changes and influences

winding and setting mechanisms

Condition and faults

Condition and faults may include:

end shakes, side shakes and clearances of operating components

oscillators balance spring condition, shock protection operation, condition and component replacement

functioning, clearances and safety action of the escapement system

mainspring and barrel assembly condition

gear train (e.g. pivot, pinions and bearings conditions - wear and corrosion)

winding and setting components (e.g. wear and end shake freedom)

lubrication including type, application, quantity and cleanliness

Timekeeping performance

Timekeeping performance may include:

regulating system components adjustment

balance spring condition (e.g. flat, concentric, beating evenly between curb pins)

beat error diagnosis and adjustment

Sub-assemblies and components

Sub-assemblies and components may include:

balance and cock assembly (e.g. shock spring replacement)

escapement components (e.g. pallet and escape wheel)

barrel and mainspring assembly (e.g. barrel arbor, barrel wall hooking device )

gear train (e.g. observe backlash)

winding and setting mechanisms, including motion work and canon pinion

hand setting tension (e.g. cannon pinions and friction wheel)

shock-resistance system

calendar, winding system and other mechanisms

power reserve

Watch performance/rate testing

Watch performance and rate testing may include:

in-beat adjustment without movable stud holder

rate adjustment

amplitude evaluation of watches performance

Hand tools and equipment

Hand tools and equipment may include:

timing machine

staking set

jewel press

eyeglass, screwdrivers and tweezers

case opening and closing tools

Clean and safe work environment

Clean and safe work environment may be specified through:

relevant legislation and regulations

enterprise operating procedures

5S housekeeping related principles and procedures (e.g. sort, straighten, shine, standardise, sustain)