NZQA Expiring unit standard
5440 version 5
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Title
Identify tyre applications for tractors and agricultural machinery, and
remove and replace tyres
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:
demonstrate knowledge of tractor and agricultural machinery
tyre types and sizes; demonstrate knowledge of tyre damage,
repair techniques, and maintenance requirements; demonstrate
knowledge of tractor wheels; and remove and replace tractor
tyres.
Classification
Motor Industry > Tyres
Available grade
Achieved
Explanatory notes
The following legislation and amendments are required to be consulted and followed
where applicable:
–
Health and Safety in Employment Act, 1992.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of tractor and agricultural machinery tyre types and sizes.
Evidence requirements
1.1
Tyre patterns are described and applicable use identified for each type
according to tyre manufacturer’s specifications.
Range
1.2
basic lug pattern – directional; angle of lugs, length of lug to centre
line, industrial lug; grass or turf pattern; flotation and soil
compaction; front non-driving tyres – tri-rib, broken tri-rib, multi-rib.
Tyre sizes are defined according to tyre manufacturer’s specifications.
Range
measurement relating to rim diameter and tyre section width, low
profile aspect ratio, side wall markings – speed and loading
indexing characteristics.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
1.3
Tyre construction is described according to tyre manufacturer’s specifications.
Range
1.4
cross ply – rayon and nylon; radial – rayon and nylon; steel belted
plies; beads, side walls, apexes and chafers; rubber compounds.
Dynamic rolling circumference is described according to tyre manufacturer’s
specifications.
Range
1.5
5440 version 5
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matching tyre circumferences for four wheel drive and wheel
assisted machines; front tyre lead – performance, safe handling,
mechanical considerations of the machine.
Tyre valve types are described according to tyre manufacturer’s specifications.
Range
water valves, dry valves, tubeless stems, tube stems.
Outcome 2
Demonstrate knowledge of tyre damage, repair techniques, and maintenance
requirements.
Evidence requirements
2.1
Tyre wear is described according to tyre and/or machine manufacturer’s
descriptions.
Range
2.2
Tyre rupture is identified.
Range
2.3
broken tyre walls, lug damage through spinning, staking, ozone
cracking, petroleum and herbicide deterioration.
Tyre repair methods are described according to tyre manufacturer’s
instructions.
Range
2.4
under inflation wear pattern, over inflation wear pattern.
permanent vulcanising, cold chemical cure, temporary boots, tyre
"worms".
Tyre maintenance criteria are described according to tyre manufacturer’s
instructions.
Range
pressures, hard surface, soft surface, ballast, antifreeze, water,
calcium chloride, petroleum product and herbicide contamination,
deterioration prevention.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
5440 version 5
Page 3 of 4
Outcome 3
Demonstrate knowledge of tractor wheels.
Evidence requirements
3.1
Rim and wheel disc configurations are described according to machine
manufacturer’s specifications.
Range
single well rims, double rims, wheel discs and settings, power
adjusted rims.
Outcome 4
Remove and replace tractor tyres.
Evidence requirements
4.1
Safety precautions are observed when jacking tractors.
Range
4.2
Tractor tyres are removed from their wheels without damage to rims and tyres.
Range
4.3
safe working practices, selection and use of tyre tools and
equipment.
Wheel rims are maintained to restore serviceability.
Range
4.4
safe jacking points, jack capacities, safe stands, removal of
wheels.
descaling, painting, straightening, welds, rivet replacement.
Tractor tyres are fitted to wheels without damage to tyres and rims.
Range
safe working practices, selection and use of tyre tools and
equipment, use of a safety cage, inflation procedure and pressure.
Replacement information
This unit standard has been replaced by unit standard
24459 and unit standard 24460.
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
5440 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
31 October 1995
31 December 2016
Review
2
29 March 1999
31 December 2016
Review
3
25 January 2008
31 December 2016
Rollover
4
19 November 2010
31 December 2016
Rollover
5
18 February 2016
31 December 2020
Consent and Moderation Requirements (CMR) reference
0014
This CMR 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 Conesnt and Moderation Requirements (CMR). The CMR
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