NZQA Expiring unit standard
938 version 5
Page 1 of 4
Title
Inspect and overhaul braking system hydraulic componentry off the
vehicle
Level
3
Credits
4
Purpose
This unit standard is for people in the automotive repair
industry. People credited with this unit standard are able to
inspect braking system hydraulic brake components off the
vehicle, and overhaul braking system hydraulic components.
Classification
Motor Industry > Vehicle Braking Systems
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 8184, Explain the operation and servicing requirements of
car and light commercial vehicle braking systems, 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.
3
Because of the particular nature of this unit standard, it is essential that the practical
assessment evidence is obtained from commercial jobs in the workplace under
normal workplace conditions.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
938 version 5
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Inspect braking system hydraulic brake components off the vehicle.
Range
single and double acting wheel cylinders, single and tandem master cylinders,
brake boosters (vacuum operated), vacuum pumps, single and multi piston
callipers (fixed and floating types).
Evidence requirements
1.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment safety.
1.2
Suitable tools and equipment are selected and used to enable components to
be dismantled.
1.3
Component parts are dismantled in a logical sequence in accordance with
manufacturer's manual instructions.
1.4
Component parts are laid out in order of disassembly to ensure that any
variance from the manufacturer's manual instructions is noted.
1.5
Component parts are cleaned without damaging precision surfaces and rubber
seals to enable an assessment of their condition to be made.
1.6
Component parts are inspected for wear, corrosion, and damage, and a report
is given to the supervisor.
Range
1.7
The feasibility of a repair is determined, based on relevant factors.
Range
1.8
visual inspection, precision measurement.
type and extent of repair required, cost of repair, availability and
cost of replacement, life expectancy and guarantee.
A recommendation based on the feasibility of repair is presented to the
supervisor.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
938 version 5
Page 3 of 4
Outcome 2
Overhaul braking system hydraulic components.
Range
single and double acting wheel cylinders, single and tandem master cylinders,
single and multi piston callipers (fixed and floating types).
Evidence requirements
2.1
Safe working practices are observed throughout the task.
Range
2.2
The work area is clean to ensure that no dust, dirt, and foreign matter
contaminate the components on reassembly.
Range
2.3
personal safety, safety of others, equipment safety.
work bench, parts tray, hands, tools.
A brake cylinder hone is used according to the equipment manufacturer's
instructions, and in a manner that ensures that the cylinder bore surface is free
of surface imperfections.
Range
cast iron bores.
2.4
Suitable tools and equipment are selected and used to enable component parts
to be assembled.
2.5
The component is reassembled without damage to any of the parts and
according to manufacturer's specifications.
2.6
The component is tested, and any rectifications are made to ensure that it
complies with the manufacturer's specifications for a fully serviceable unit.
Replacement information
This unit standard has been replaced by unit standard
24408 and unit standard 24409.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
938 version 5
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
29 October 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.
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