NZQA Expiring unit standard
989 version 5
Page 1 of 4
Title
Retrofit a turbocharger to a diesel engine
Level
5
Credits
4
Purpose
This unit standard is for people in the automotive repair
industry. People credited with this unit standard are able to:
demonstrate knowledge of turbocharging a non-turbo diesel
engine; test the engine prior to installing a turbocharging
system; and install a turbocharger kit.
Classification
Motor Industry > Automotive Fuel Systems and Exhaust
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 15440, Remove and replace a heavy vehicle or machine
diesel engine cylinder head; and Unit 967, Measure and
interpret engine performance; or demonstrate equivalent
knowledge and skills.
Explanatory notes
1
The following legislation, regulations, and their amendments are required to be
consulted and followed where applicable:
– Health and Safety in Employment Act, 1992
– Transport (Vehicle Standards) Regulations, 1990.
2
Reference to suitable tools and 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
Demonstrate knowledge of turbocharging a non-turbo diesel engine.
Evidence requirements
1.1
The reason for turbocharging an engine is explained in terms of improved
power output.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
1.2
Costs associated with turbocharging an engine are identified.
Range
1.3
cost of kit, conversion cost, economic viability, other external
modifications.
Engine modifications necessary as a result of retrofitting are described
according to manufacturer’s installation instructions.
Range
1.4
989 version 5
Page 2 of 4
compression ratio, valves and cylinder head, reciprocating
components, oil pump and oil cooler, cooling system, fuel pump,
boost control unit.
Possible effects on vehicle and/or machine mechanical systems when
retrofitting a turbocharger are described according to manufacturer’s
specifications.
Range
engine, transmission, driveline.
Outcome 2
Test the engine prior to installing a turbocharger system.
Evidence requirements
2.1
Safe working practices are observed throughout the task.
Range
2.2
The technical information on the engine is consulted to ensure that correct
modifications are carried out.
Range
2.3
personal safety, safety of others, equipment and vehicle safety.
manufacturer's workshop manual, turbocharger kit.
The engine condition and performance is checked to ensure that it is capable of
successful modification.
Range
mechanical inspection, state of engine tune, existing cooling,
induction and exhaust system condition, transmission and
driveline condition.
Outcome 3
Install a turbocharger kit.
Evidence requirements
3.1
Safe working practices are observed throughout the task.
Range
3.2
personal safety, safety of others, equipment and vehicle safety.
Suitable tools and equipment are selected and used to enable the kit to be
fitted.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
989 version 5
Page 3 of 4
3.3
The turbocharger kit selected is compatible with the engine specifications.
3.4
The modifications required are completed according to the kit manufacturer's
instructions.
3.5
The turbocharger unit is installed according to kit manufacturer's instructions
and to ensure accessibility for maintenance.
3.6
Associated engine systems function as intended by the kit manufacturer.
Range
fuel system, air induction system, exhaust system, cooling system.
3.7
The completed unit operates and performs to kit manufacturer's specifications.
3.8
The performance results are recorded for employer and customer information.
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
9 November 1993
31 December 2016
Review
2
4 October 1996
31 December 2016
Review
3
26 February 1999
31 December 2016
Review
4
25 January 2008
31 December 2016
Rollover
5
19 November 2010
31 December 2016
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP 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, or
an inter-institutional body with delegated authority for quality assurance, 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.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
989 version 5
Page 4 of 4
Consent requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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