Unit of competency Outline
Date retreived
22/07/2026 1:58 PM AWST
22/07/2026 1:58 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Tune diesel engines
Tune diesel engines
Unit of competency
National Code
MEM18029B
MEM18029B
State Code
W5573
W5573
TGA Status
Replaced
Replaced
DTWD Status
Transition (Replaced)
Transition (Replaced)
State Implementation and Classification
Approved Date
18/06/2009
Field of Education
030503 - Vehicle Mechanics
Original Release Date
18/06/2009
Nominal Hours
36
Description
This unit covers compression testing and tuning up the engine.
Notes
Elements and Performance Criteria
1. Compression test engine
- 1.1. Injectors are removed and fuel system for each cylinder is isolated correctly.
- 1.2. Appropriate adaptors are selected and fitted.
- 1.3. Readings obtained are accurately recorded and interpreted.
- 1.4. Compression readings are corrected for adaptor used.
2. Perform tune up
- 2.1. If applicable, firing pressures are accurately determined and adjusted to specification.
- 2.2. Engine is started, operated, loaded, and shut down safely.
- 2.3. Test equipment is correctly applied.
- 2.4. Air restriction, boost, back pressure and flow tests are performed according to manufacturers' recommendations.
- 2.5. Readings are recorded and variances from specifications are correctly determined.
- 2.6. Density of exhaust smoke is correctly determined.
- 2.7. Valve clearance and/or timing is correctly adjusted.
- 2.8. Injection pump or injector timing is adjusted to specification.
- 2.9. Governor rack travel, torque spring load limit, overspeed trips, aneroid or fuel ratio control is adjusted to specification.
- 2.10. Injector opening pressure is correctly determined and adjusted.
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.
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.
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 tune diesel engines. 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 on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then 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 tuning diesel engines, 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
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 tune diesel engines. 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 on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then 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 tuning diesel engines, 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
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| M0438 | MEM18.29AA | Tune diesel engine | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| OAT33 | MEM27005 | Tune diesel engines | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| W245 | MEM40105 | Certificate IV in Engineering | Qualification |
| W233 | MEM20105 | Certificate II in Engineering | Qualification |
| W247 | MEM50105 | Diploma of Engineering - Advanced Trade | Qualification |
| W237 | MEM30205 | Certificate III in Engineering - Mechanical Trade | Qualification |
| W234 | MEM20205 | Certificate II in Engineering - Production Technology | Qualification |
| W726 | LMT31909 | Certificate III in Engineering - TCF Mechanic | Qualification |