NZQA Expiring unit standard
19304 version 4
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Title
Describe turbocharger diagnostic procedures and recondition an
automotive turbocharger
Level
4
Credits
7
Purpose
This unit standard is for people in the automotive fuel injection
industry. People credited with this unit standard are able to:
describe turbocharger diagnostic procedures; prepare a
turbocharger for reconditioning; dismantle a turbocharger and
complete a condition report; and renew and replace
turbocharger components and assemble unit.
Classification
Motor Industry > Automotive Fuel Systems and Exhaust
Available grade
Achieved
Explanatory notes
1
The following legislation and amendments are required to be consulted and followed
where applicable:
Health and Safety in Employment Act, 1992.
2
Reference to suitable tools and workshop equipment means industry approved tools
and equipment that are recognised within the industry as being the most suited to
complete the task to a professional and competent manner with due regard to safe
working practices.
Outcomes and evidence requirements
Outcome 1
Describe turbocharger diagnostic procedures.
Evidence requirements
1.1
The importance of cleanliness when working with turbochargers is identified.
Range
1.2
contamination, precise machine tolerances and close operating fits
of components, damage and premature failure.
Faults that affect turbocharger operation are described according to
turbocharger manual description.
Range
air contamination and restrictions, air leaks, impact damage, wear,
oil contamination and feed, housing damage, excessive shaft play,
imbalance of rotating parts.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
1.3
Wear patterns on components are identified according to turbocharger manual
illustrations.
Range
1.4
19304 version 4
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lack of lubricant, foreign object ingestion, contamination of
lubricant.
Symptoms that can indicate turbocharger faults are identified.
Range
engine lacks power, black exhaust smoke, blue exhaust smoke,
excessive engine oil consumption, noisy turbocharger operation.
Outcome 2
Prepare a turbocharger for reconditioning.
Evidence requirements
2.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment and workshop safety.
2.2
Suitable tools and workshop equipment are selected and used, to enable a
turbocharger to be cleaned.
2.3
The turbocharger is prepared for reconditioning by cleaning the unit, so that no
foreign matter will enter the internal components.
Outcome 3
Dismantle a turbocharger and complete a condition report.
Evidence requirements
3.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment and workshop safety.
3.2
Suitable tools and workshop equipment are selected and used, to enable a
turbocharger to be dismantled and inspected.
3.3
The end plate and turbocharger housing are marked to facilitate reassembly in
the same position.
3.4
The turbocharger unit is dismantled according to manufacturer's instructions.
3.5
All parts are cleaned, to enable an inspection to be carried out.
3.6
A condition report is completed, and given to the supervisor.
Range
inspection of parts, identifying and recording faults, recommending
repairs and replacement of parts.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
19304 version 4
Page 3 of 4
Outcome 4
Renew and replace turbocharger components and assemble unit.
Evidence requirements
4.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment and workshop safety.
4.2
Suitable tools and workshop equipment are selected and used, to enable
turbocharger components to be replaced and the unit to be assembled.
4.3
All parts to be replaced are ordered from a supplier.
Range
interpreting parts catalogues, including updates and
supersessions, obtaining pricing and delivery details.
4.4
Turbines are cleaned of all foreign matter, and balanced according to
manufacturer's recommendations.
4.5
The turbocharger unit is reassembled with new and existing parts according to
manufacturer's instructions and specifications.
Range
4.6
cleanliness, clearances, alignment marks.
Advice is given to the customer on installation procedures recommended by
manufacturer.
Replacement information
This unit standard has been replaced by unit standard
24232 and unit standard 24233.
This unit standard replaces unit standard 15383.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
19 April 2002
31 December 2016
Review
2
25 January 2008
31 December 2020
Rollover
3
19 November 2010
31 December 2020
Rollover
4
22 August 2014
31 December 2020
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
19304 version 4
Page 4 of 4
Consent and Moderation Requirements (CMR) reference
0014
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016