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Repair and replace heavy vehicle tyres
Level
3
Credits
10
Purpose
This unit standard is for people in the automotive repair industry. People
credited with this unit standard are able to: remove wheels from heavy
vehicles; remove heavy vehicle tyres from wheels; repair punctured tubes
and damage to tyres from heavy vehicles; repair punctured tubeless tyres
from heavy vehicles; fit heavy vehicle tubed tyres to wheels; fit heavy vehicle
tubeless tyres to wheels; and fit wheels to heavy vehicles.
Subfield
Motor Industry
Domain
Tyres
Status
Registered
Status date
25 January 2008
Date version published
25 January 2008
Planned review date
31 December 2012
Entry information
Prerequisite: Unit 24463, Demonstrate knowledge of
heavy vehicle tyres and wheels, or demonstrate
equivalent knowledge and skills;
Recommended: Unit 24458, Prepare to repair, and
repair punctures in tubes and tubeless tyres on light
vehicles, or demonstrate equivalent knowledge and
skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
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Special notes
1
Legislation and publications relevant to this unit standard include but are not limited
to – Health and Safety in Employment Act 1992; Health and Safety in Employment
Regulations 1995; Land Transport Rule: Tyres and Wheels 2001, Rule 32013; New
Zealand Standard AS/NZS 2230:1999 New pneumatic tyres for light trucks and
trucks/buses, NZS 5423:1996 Specification for repairing and retreading car, truck
and bus tyres; Health and Safety Guidelines for Tyre Fitters (Wellington:
Occupational Safety and Health Service, Department of Labour, 2001).
2
Land Transport Rules are produced for the Minister of Transport by Land Transport
New Zealand. These rules are available online at
http://www.landtransport.govt.nz/rules/.
New Zealand Standards are available from Standards New Zealand, Private Bag
2439, Wellington; phone 04 498 5990; or website http://www.standards.co.nz.
Health and Safety Guidelines for Tyre Fitters is available online from the Department
of Labour website http://www.osh.govt.nz/order/catalogue/106.shtml.
3
Definitions
Heavy vehicle refers to a motor vehicle that is of Class MD3, MD4, ME, NB, NC, TC
or TD; or has a gross vehicle mass that exceeds 3500 kg and is not of a class
specified in the Table of vehicle classes as listed from Land Transport New Zealand
website http://www.landtransport.govt.nz/publications/infosheets/infosheet-110.html#classes.
Service information may include but is not limited to – technical information of a
vehicle, machine, or product detailing operation; installation and servicing
procedures; manufacturer instructions and specifications; technical terms and
descriptions; and detailed illustrations. This can be accessed in hard copy or
electronic format and is normally sourced from the manufacturer.
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 in a
professional and competent manner with due regard to safe working practices.
4
For the purpose of this unit standard, plugging of tyre punctures excludes exterior
applications.
Elements and performance criteria
Element 1
Remove wheels from heavy vehicles.
Range
single wheels, dual wheels.
Performance criteria
1.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
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1.2
Suitable tools and equipment are selected and used to enable the wheel to be
removed in accordance with service information.
1.3
Wheel type is identified to enable manufacturer’s removal procedures to be
followed in accordance with company requirements.
Range
1.4
The vehicle is raised and secured to enable the wheel to be removed in
accordance with company requirements.
Range
1.5
closed centre wheels, artillery wheels, alloy wheels, pressed steel
wheels, hub-piloted wheels, stud-piloted wheels.
ensuring load capacity of jack is sufficient for the lift, jacking
carried out on hard even surface, park brake applied, vehicle
empty of people, jacking point on a load bearing structure that will
support the weight of the vehicle, axle stands of sufficient load
capacity and secure.
The wheel is removed from the vehicle in a safe manner and without damage to
the wheel retaining threads.
Range
valve core(s) removed and tyre (or dual paired tyres) deflated
before attempting to remove from the vehicle, nuts loosened
diagonally, wedges freed from artillery wheels before nuts
removed, wheels removed without risk of personal injury.
Element 2
Remove heavy vehicle tyres from wheels.
Range
tubed tyre, tubeless tyre.
Performance criteria
2.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
2.2
Suitable tools and equipment are selected and used to enable the tyre to be
removed from the wheel in accordance with tyre manufacturer
recommendations.
2.3
The tyre is completely deflated before attempting to remove the tyre.
Range
2.4
removing valve core, ensuring valve stem is not obstructed.
The tyre bead is removed from its seat on the rim without damage to the tyre
wall and wheel rim.
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2.5
The lock ring and flange are removed from the wheel without stretching or
bending components.
2.6
The tyre is removed from the wheel without damage to the beads or wheel rims.
Range
lubricating beads, ensuring beads are in the wheel well,
commencing removal of the bead at the valve, guiding the tube
valve through the rim, removing the rust band and tube from the
tyre.
Element 3
Repair punctured tubes and damage to tyres from heavy vehicles.
Performance criteria
3.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
3.2
Suitable tools and equipment are selected and used to enable the tube to be
repaired in accordance with repair kit manufacturer recommendations.
3.3
The tyre is inspected for damage and suitability to return to service, and any
signs of faults causing the puncture are marked.
Range
as a result of under-inflation, puncture damage.
3.4
Suitability of repair is established in accordance with repair kit manufacturer
recommendations and the condition of the tube.
3.5
The source of the puncture in the tube is located and marked to enable the
repair to be carried out.
Range
3.6
The puncture is repaired in accordance with puncture repair kit instructions,
depending on the type of tyre, and size and location of the puncture.
Range
3.7
inflating the tube, visual inspection, using water trough.
repair patch vulcanised in place by the application of localised
heat with a spot vulcaniser, tubes repaired with a cold vulcanising
repair kit.
The tyre is patched or plugged in accordance with tyre manufacturer or repair kit
manufacturer recommendations.
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Element 4
Repair punctured tubeless tyres from heavy vehicles.
Performance criteria
4.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
4.2
Suitable tools and equipment are selected and used to enable the tyre to be
repaired in accordance with tyre manufacturer recommendations.
4.3
The tyre is inspected and verified that it is suitable to return to service in
accordance with legislative requirements.
Range
4.4
as a result of under-inflation, puncture damage.
The damage to the tyre is located and marked to enable the repair to be carried
out.
Range
inflating the tyre in a secure position, visual inspection, using water
trough, removing tyre and inspecting inside case.
4.5
Cause of the puncture is removed from the tyre without rendering the tyre
unsuitable for further use.
4.6
The feasibility of repair is determined by the condition of the tyre and the extent
of the puncture damage.
4.7
The tyre is repaired in accordance with repair kit instructions, so that the tyre
retains operating pressure and conforms to legislative requirements.
Element 5
Fit heavy vehicle tubed tyres to wheels.
Performance criteria
5.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
5.2
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
Suitable tools and equipment are selected and used to enable the tyre to be
fitted to the wheel in accordance with tyre equipment manufacturer
recommendations.
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5.3
Components are checked for condition and cleaned, and any faults or damage
are reported to the supervisor.
Range
flange, locking ring, rim, rust band, tube, valve, removing rust and
dirt from the rim, removing foreign objects from inside the tyre,
inner casing damage, beading damage, compliance to legislative
requirements.
5.4
The tyre and tube assembly is assembled to the wheel without damage to
components in accordance with tyre manufacturer or tyre equipment
manufacturer recommendations.
5.5
The wheel assembly is placed in a safety cage before inflating above 35kPa
(5psi).
5.6
The tyre is inflated to tyre manufacturer recommended operating pressure, and
the valve cap replaced.
5.7
The tyre is checked to ensure that no leaks exist as a result of fitting the tyre
and tube assembly.
Element 6
Fit heavy vehicle tubeless tyres to wheels.
Performance criteria
6.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
6.2
Suitable tools and equipment are selected and used to enable the tyre to be
fitted to the wheel in accordance with tyre equipment manufacturer
recommendations.
6.3
Components are checked for condition, and any faults or damage are reported
to the supervisor.
Range
valve, sealing washers, inner liner, removing rust and dirt from the
rim, removing foreign objects from inside the tyre, inner casing
damage, beading damage, compliance to legislative requirements.
6.4
The tyre assembly is assembled to the wheel without damage to components,
ensuring that beads are seated on the rim.
6.5
The wheel assembly is placed in a safety cage or made secure before inflating
above 35kPa (5psi).
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6.6
The tyre is inflated to the tyre manufacturer recommended operating pressure,
and the valve cap replaced.
6.7
The tyre is checked to ensure that no leaks exist as a result of fitting the tyre
assembly.
Element 7
Fit wheels to heavy vehicles.
Range
single wheels, dual wheels.
Performance criteria
7.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, vehicle safety, site safety,
environmental safety, tools and equipment safety.
7.2
Suitable tools and equipment are selected and used to enable the wheel to be
fitted to the vehicle in accordance with service information.
7.3
Wheel to be fitted is compatible to the vehicle's application, and conforms to
legislative requirements.
Range
7.4
The wheel is fitted to the vehicle in a safe manner and without damage to
components.
Range
7.5
spacers, inner and outer nuts, location lugs or tangs, tyre type and
size, tyre condition, load capacity, wheel mounting system.
wheel lifted without risk of personal injury, threads checked, nuts
tightened and torqued to vehicle manufacturer specifications,
vehicle lowered to the ground and rendered safe, inflation
pressure to vehicle manufacturer specifications;
may include – radial runout checked.
Arrangements are made for the wheel nuts to be re-torqued within a specified
distance of 80-160 kilometres, or when specified by the vehicle manufacturer,
after wheel has been removed and replaced.
Please note
Providers must be 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 accredited by NZQA before they can register
credits from assessment against unit standards.
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Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation 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.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016