NZQA Expiring unit standard
11741 version 4
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Title
Check, demount, and mount a heavy off-the-road equipment tyre
Level
4
Credits
10
Purpose
This unit standard is for people in the automotive repair
industry. People credited with this unit standard are able to:
carry out maintenance checks on off-the-road (OTR) tyres;
remove a wheel from a heavy OTR machine; demount a heavy
OTR tyre from a wheel; demount a tyre from a heavy OTR
machine; mount a heavy OTR tyre to a wheel; and fit a wheel
to a heavy OTR machine.
Classification
Motor Industry > Tyres
Available grade
Achieved
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;
– Heavy Vehicle Regulations, 1974;
– Traffic Regulations, 1976.
2
Heavy off-road equipment in this unit standard refers to earth moving equipment,
grader equipment, loaders, dozers, and other heavy portable industrial equipment
using tubed or tubeless radial and cross ply tyres.
3
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.
4
This unit standard refers to maintenance checks and removal and refitting
procedures only. Repairs should be carried out by an industry-recognised tyre
vulcaniser.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
11741 version 4
Page 2 of 6
Outcomes and evidence requirements
Outcome 1
Carry out maintenance checks on off-the-road (OTR) tyres.
Evidence requirements
1.1
Inflation checks are carried out on cold tyres and tyre pressures are adjusted
according to tyre manufacturer's specifications for cold pressure settings.
1.2
Hot pressure checks are performed to determine pressure build-up during
operating conditions, and any pressure build-up above 25% from cold settings
is reported to the supervisor or operator of the machine.
1.3
Visual inspection of a machine's tyres is completed and recommendations for
further use or repair are given to the supervisor or operator of the machine.
Range
1.4
Factors that determine tyre performance are identified in accordance with tyre
manufacturer's recommendations.
Range
1.5
under inflation damage and wear, over inflation damage and wear,
heat damage, impact breaks, cuts, tread depth, tread damage,
wall damage.
hours of service, average speed, grades and curves, matching
tyres to application, operational limits, length of haul, tyre
temperature, tyre maintenance, payload and payload distribution,
operator driving practices.
Tyre maintenance checks are carried out on the machine according to tyre
manufacturer's recommendations, and any damage or action required to
prevent damage is reported to the supervisor or operator of the machine.
Range
tyre to machine clearance, wedged stones, matching of dual tyres,
overloading, repairs to cuts, oil, grease or fuel contamination,
mechanical problems, rim damage, wheel damage, abnormal
wear, air leaks, separation of tread or piles, tread depth, valve
caps fitted, wheel nuts secure, locating key secure.
Outcome 2
Remove a wheel from a heavy OTR machine.
Range
single wheels, dual wheels.
Evidence requirements
2.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment, and machine safety.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
11741 version 4
Page 3 of 6
2.2
Suitable tools and hoist equipment are selected and used to enable the wheel
to be removed.
2.3
The machine is raised and secured to enable the wheel to be removed.
Range
2.4
ensuring load capacity of hoist and jacking equipment is sufficient
for the lift, jacking carried out on hard even surface, wheels
chocked, park brake or emergency brake applied, jacking point on
a load bearing structure that will support the weight of the
machine, supporting blocks of sufficient load capacity and secure.
The wheel is removed from the machine according to the machine
manufacturer's instructions.
Outcome 3
Demount a heavy OTR tyre from a wheel.
Evidence requirements
3.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment safety.
3.2
Suitable tools, machinery, and equipment are selected and used to enable the
tyre to be removed from the wheel.
3.3
The tyre is completely deflated prior to doing any other work on the assembly.
Range
removing valve core, ensuring valve stem is not obstructed,
keeping clear during deflation.
3.4
Rim components are removed from the wheel without damage or personal
injury.
3.5
Tyre beads are unseated from their rims without damage to the tyre wall and
wheel trim.
3.6
The tyre is removed from the wheel without damage to the tyre, flanges, and
wheel trims.
Range
using demounting equipment, ensuring beads are unseated,
removing bands and flanges, lifting rim base from tyre.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
11741 version 4
Page 4 of 6
Outcome 4
Demount a tyre from a heavy OTR machine.
Evidence requirements
4.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment, and machine safety.
4.2
Suitable tools, machinery, and hoist equipment are selected and used to enable
the tyre to be removed.
4.3
The machine is raised and secured to enable the tyre to be removed.
Range
4.4
The tyre is completely deflated prior to doing any other work on the assembly.
Range
4.5
ensuring load capacity of hoist and jacking equipment is sufficient
for the lift, jacking carried out on hard even surface, wheels
chocked, park brake or emergency brake applied, jacking point on
a load bearing structure that will support the weight of the
machine, supporting blocks of sufficient load capacity and secure.
removing valve core, ensuring valve stem is not obstructed,
keeping clear during deflation.
The tyre is removed from the wheel without damage to the tyre, flanges, and
wheel rims.
Range
using demounting equipment, ensuring beads are unseated,
removing bands and flanges, lifting tyre from rim base.
Outcome 5
Mount a heavy OTR tyre to a wheel.
Range
wheel off a machine, wheel on a machine.
Evidence requirements
5.1
Safe working practices are observed throughout the task.
Range
5.2
personal safety, safety of others, equipment safety.
Suitable tools, machinery, and equipment are selected and used to enable the
tyre to be fitted to the wheel.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
5.3
Components are checked for condition and cleaned, and any faults or damage
is reported to the supervisor.
Range
5.4
ensuring tube and flap are located without creasing or twisting,
dressing the rim, locating valve stem, lifting tyre and rim, locating
and fitting flange and lock ring, ensuring beads are seated on the
rim, ensuring lock ring is in position in the rim base groove, new Oring fitted for tubeless tyre, lubrication, rims assembled before
inflating.
The tyre is inflated to tyre manufacturer's recommended operating pressure,
and the valve cap replaced.
Range
5.6
flange, locking ring, rim, rust band, tube, flap, valve, tubeless tyre
O-ring, removing rust and dirt, removing foreign objects from
inside the tyre, removing stones from tread, inner casing damage,
beading damage.
The tyre and tube assembly are assembled to the wheel without damage to
components.
Range
5.5
11741 version 4
Page 5 of 6
wheel assembly placed in a safety cage or safety restraint, no
person standing in front of the tyre while inflating, assembly
positioned in place, ballast requirements.
No leaks are existing as a result of fitting the tyre and tube assembly.
Outcome 6
Fit a wheel to a heavy OTR machine.
Range
single wheels, dual wheels.
Evidence requirements
6.1
Safe working practices are observed throughout the task.
Range
personal safety, safety of others, equipment and vehicle safety.
6.2
Suitable tools, machinery, and equipment are selected and used to enable the
wheel to be fitted to the machine.
6.3
Wheel to be fitted is compatible to the machine's application.
Range
spacers, inner and outer nuts, location lugs, tyre type and size,
tyre condition, load limit.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
6.4
11741 version 4
Page 6 of 6
The wheel is fitted to the vehicle in a safe manner and without damage to
components.
Range
wheel fitted by hoist or lifting equipment, nuts tightened diagonally
and torqued to machine manufacturer's specifications, machine
lowered to the ground and rendered safe, inflation pressure to tyre
manufacturer's specifications.
Replacement information
This unit standard and unit standard 11742 have been
replaced by unit standard 22461 and unit standard
24462.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 September 1997
31 December 2016
Review
2
28 February 2001
31 December 2016
Review
3
25 January 2008
31 December 2016
Rollover
4
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