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Level 3
Credits 4
Purpose This theory-based unit standard is for people who work in the motor industry.
People credited with this unit standard are able to demonstrate knowledge of: light vehicle tyre legislation and standards; light vehicle tyres, types and sizes; tyre abnormalities and demounting and remounting tyres; and light vehicle wheels.
Subfield Motor Industry
Domain
Status
Status date
Date version published
Tyres
Registered
25 January 2008
25 January 2008
Planned review date
Entry information
31 December 2012
Open.
Replacement information
Accreditation
This unit standard and unit 24458 replaced unit standard
916 and unit standard 9074.
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
.
Special notes
1 Legislation and publications relevant to this unit standard include but are not limited to – Health and Safety in Employment Act 1992; Land Transport Rules: Tyres and
Wheels 2001, Rule 32013; Tyres and Wheels Amendment 2005, Rule 32013/1; New
Zealand Standards NZS 5419:1991 Motor vehicles – Light alloy road wheels , NZS
5423:1996 Specification for repairing and retreading car, truck and bus tyres ; NZS
5453:1989 New tyres for passenger vehicles ; Vehicle Inspection Requirements
Manual (VIRM) In-service Certification, Section 10 Tyres, wheels and hubs; Health and Safety Guidelines for Tyre Fitters (Wellington: Occupational Safety and Health
Service, Department of Labour, 2001).
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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
.
The VIRM is published by Land Transport New Zealand and is available online at http://www.landtransport.govt.nz/certifiers/virm-in-service/index.html
.
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 Definition
Light vehicle refers to classes as listed from Land Transport New Zealand website table http://www.landtransport.govt.nz/publications/infosheets/infosheet-1-
10.html#classes : passenger vehicle MA, MB, MC; omnibus MD, MD1, MD2; and goods vehicle NA.
Element 1
Demonstrate knowledge of light vehicle tyre legislation and standards.
Performance criteria
1.1 New Zealand standards for tyres are identified in accordance with legislative requirements.
Range new, used, imported; load capacity, tread pattern, inflation limits, speed rating.
1.2 Specific requirements relating to the regrooving of tyres are identified in accordance with manufacturer specifications and legislative requirements.
Range vehicle types, tyre types.
1.3 Standards for rejection of tyres are identified in accordance with the VIRM requirements.
Range cuts; exposed, worn, and damaged cords; bulges in side wall; repairs; separations; zipper.
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Element 2
Demonstrate knowledge of light vehicle tyres, types and sizes.
Performance criteria
2.1 Tyre types, sizes and applications are described in accordance with tyre manufacturer specifications.
Range includes but is not limited to – tubed, tubeless, crossply, radial ply, fabric and steel belted, run-flat, space saver.
2.2 Side wall markings are described in accordance with tyre manufacturer specifications.
Range load rating, speed rating, date of manufacture, size, manufacturer, tyre type.
2.3 Types of tyre tread patterns and their uses are described in accordance with tyre manufacturer specifications.
Range pattern direction (angle of pattern), length of pattern, pattern design (standard, asymmetrical, directional).
2.4 Tyre construction and component parts are described in accordance with tyre manufacturer specifications.
Range construction
– cross-ply/bias-ply, belted cross-ply/bias-ply, radialply, run-flat; components – casing ply, fabric belts, steel belts, overlay, tread, sidewall, beads, apexes, chafers.
2.5 Dynamic rolling circumference characteristics are described in accordance with tyre manufacturer specifications.
Range tyre circumferences, tyre profiles, air pressure, tyre section width, tyre-to-rim match, aspect ratio, overall diameters, static loaded radius.
2.6 Tyre valve types are described in accordance with tyre manufacturer specifications.
Range rubber, metal, tube, tubeless.
2.7 Purpose of driving and directional tyres is explained in accordance with tyre manufacturer specifications.
Range driving tyres compared to non-driving standard, asymmetrical and directional tyres; design; wear characteristics.
2.8 Tyre pressure monitoring and inflation systems are described in accordance with manufacturer specifications.
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Element 3
Demonstrate knowledge of tyre abnormalities and demounting and remounting tyres.
Performance criteria
3.1 Causes of abnormal tyre wear are described in accordance with vehicle manufacturer specifications.
Range includes but is not limited to
– under-inflation, over-inflation, wheel alignment and suspension geometry, accident damage, tyre size, tyre fitting, tyre rotation, tyre not to specification, tyre damage, handling, mechanical characteristics of the vehicle.
3.2 The effects tyres can have on vehicle handling are identified in accordance with vehicle manufacturer specifications.
Range includes but is not limited to – air pressures relating to load and tyre manufacturer specifications, non-matching tyres, tyre defects, foreign objects lodged in treads, radial tyre pull, uneven wear, tread depth, ply rating, type of tyre; oversteer, understeer, straight ahead driving, slip angle.
3.3 Procedures for demounting and mounting tyres are described in accordance with tyre and tyre equipment manufacturer instructions and the publication
Health and Safety Guidelines for Tyre Fitters .
Range includes but is not limited to – prevention of damage to wheel rims and tyre beads, valve positioning, avoidance of tube pinching and folding, breaking and seating of tyre beads, cleaning, inspection, inspecting and lubricating wheel assemblies.
3.4 Safety precautions when inspecting, demounting, and mounting tyres are described in accordance with tyre and equipment manufacturer instructions and the publication Health and Safety Guidelines for Tyre Fitters .
Range includes but is not limited to
– tyres under pressure, using compressed air, tyre and tube deflation and inflation, wheel support, using a tyre changing machine, using a safety cage, using hand tools and tyre tools, preventing damage to tyre pressure monitoring system (TPMS) sensors.
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Element 4
Demonstrate knowledge of light vehicle wheels.
Performance criteria
4.1 Wheel types and sizes are identified in accordance with vehicle manufacturer specifications.
Range includes but is not limited to – alloy, steel, wheel dimensions, wheel offset and effects, tube type, tubeless, spacesaver.
4.2 The effects wheels can have on vehicle handling are identified, and abnormalities that may affect vehicle handling described, in accordance with vehicle manufacturer specifications.
Range includes but is not limited to – wheel balance, wheel shape, accident damage, vibration, wheel fitment, wheel nut or stud torque.
4.3 Repair restrictions to wheels and rims are identified in accordance with legislative requirements.
4.4 Procedures for removing and fitting wheels to light vehicles are described in accordance with vehicle manufacturer instructions.
Range includes but is not limited to – safety protection, vehicle support, wheel removal, wheel fitment, wheel nut or stud torque.
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.
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.
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New Zealand Qualifications Authority 2020