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Level 3
Credits 4
Purpose This theory-based unit standard is for people employed or starting work in heavy vehicle and transport industry. People credited with this unit standard are able to demonstrate knowledge of: heavy vehicle tyres, types and sizes; tyre faults in heavy vehicles; heavy vehicle tyre hazards; heavy vehicle wheels; and inspection check procedures for tyres and 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.
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
.
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 .
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
.
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3 Definitions
Company requirements refer to instructions to staff on policy and procedures which are documented in memo or manual format and are available in the workplace.
These requirements include but are not limited to
– company specifications and procedures, work instructions, manufacturer specifications, product quality specifications, and legislative requirements.
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-1-
10.html#classes .
Element 1
Demonstrate knowledge of heavy vehicle tyres, types and sizes.
Performance criteria
1.1 Tyre types and sizes are described in accordance with tyre manufacturer specifications.
Range tubed, tubeless, crossply, radial ply, fabric and steel belted; sizes – section width, rim diameter.
1.2 Side wall markings are identified in accordance with tyre manufacturer specifications and AS/NZS 2230.
Range load rating, speed rating, date of manufacture, size, manufacturer, tyre type.
1.3 Types of tyre tread patterns are identified in accordance with tyre manufacturer specifications.
Range pattern direction (angle of pattern); length of pattern; pattern design (standard, asymmetrical, directional).
1.4 Tyre construction and component parts are identified.
Range construction – crossply/bias ply, textile radial, steel-belted radial; components – tread, casing ply, fabric belts, steel belts, carcass, sidewall, bead, apex, chafer.
1.5 Dynamic rolling circumference characteristics are identified in accordance with tyre manufacturer specifications.
Range tyre circumference, tyre profile, air pressure, tyre section width, tyre-to-rim match, aspect ratio, overall diameter, static loaded radius.
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1.6 Heavy vehicle and trailer tyre pressure monitoring and inflation systems are described in accordance with manufacturer specifications.
Element 2
Range includes but is not limited to
– Central Tire Inflation System (CTIS).
Demonstrate knowledge of tyre faults in heavy vehicles.
Performance criteria
2.1 Causes of abnormal tyre wear are identified in accordance with manufacturer specifications.
Range incorrect wheel alignment; steering, braking, and suspension faults; under-inflation, over-inflation; incorrect loading; tyre out of balance; driving technique; terrain conditions; mismatching tyres; incorrect sizes.
2.2 The effects tyres can have on vehicle handling are identified in accordance with manufacturer specifications.
Element 3
Range stability, steering, braking, vibration.
Demonstrate knowledge of heavy vehicle tyre hazards.
Performance criteria
3.1 Tyre hazards and their causes are identified and described in accordance with tyre manufacturer specifications and legislative requirements.
Range may include but is not limited to
– explosive energy, excessive tyre inflation, impact damage, abnormal heat build-up, road side hazards.
3.2 Safety precautions when handling and inspecting tyres are described in accordance with vehicle and tyre manufacturer specifications, and legislative requirements.
Range may include but is not limited to – lifting, jacking, using tools, checking tyre condition, inflating.
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Element 4
Demonstrate knowledge of heavy vehicle wheels.
Performance criteria
4.1 Wheel types are identified in accordance with vehicle manufacturer specifications.
Range types – drop centre rim, flat base rim, wide base rim, multi-piece rim, semi-drop centre rim, divided wheels.
4.2 The effects wheels can have on vehicle handling and safety are identified in accordance with manufacturer specifications.
Range wheel balance, wheel shape, accident damage, vibration, wheel fitment, wheel nut/stud torque.
Element 5
Demonstrate knowledge of inspection check procedures for tyres and wheels.
Performance criteria
5.1 Tyre and wheel inspection checks on and off heavy vehicles are identified in accordance with company requirements.
Range all wheels and tyres; damage, foreign matter, security, wear patterns, hazards, inflation pressures, compliance with legislation.
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.
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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