15462 version 3
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Inspect, test, and rectify inboard engine cooling system faults on a
trailer boat
Level
4
Credits
4
Purpose
This unit standard is for people in the trailer boat repair industry. People
credited with this unit standard are able to inspect and test the cooling
system, and rectify cooling system faults.
Subfield
Motor Industry
Domain
Trailer Boat Systems
Status
Registered
Status date
21 September 2007
Date version published
21 September 2007
Planned review date
31 December 2012
Entry information
Recommended: Unit 15439, Demonstrate knowledge of
the operation and servicing of open and closed cooling
systems on trailer boats, 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.
Special notes
1
Legislation relevant to this unit standard includes but is not limited to – Health and
Safety in Employment Act 1992; Resource Management Act 1991, s15 Discharge of
contaminants into environment.
2
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.
 New Zealand Qualifications Authority 2016
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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.
Elements and performance criteria
Element 1
Inspect and test the cooling system.
Performance criteria
1.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety, safety of others, no damage to equipment, boat
safety.
1.2
The cooling system is inspected and any damage and corrosion to cooling
system components is identified in accordance with company requirements.
1.3
The coolant level is checked and topped up to the level indicated by the
manufacturer.
1.4
The coolant is inspected visually and tested for specific gravity, and its suitability
for further use is determined in accordance with service information.
1.5
The engine is run to check that the cooling system operates at normal
temperature in accordance with service information.
1.6
The cooling system is pressure tested to the manufacturer's specified operating
pressure, and pressure loss and leaks are located.
1.7
Hoses and pipes are inspected in accordance with service information, and any
faults are located and noted.
1.8
Heat exchanger and expansion tank are inspected visually and any external
faults are located in accordance with service information.
1.9
Pressure cap is inspected and tested for serviceability in accordance with
service information.
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1.10
Raw water system is checked in accordance with service information, and any
faults found are noted.
Range
may include but is not limited to – water intake screen, pickup
pump operation, oil cooler and heat exchanger circulation, water
manifold operation, coolant discharge.
1.11
Pump drive belt is checked for condition and tension in accordance with service
information.
1.12
Thermostat is inspected and tested for serviceability in accordance with service
information.
Element 2
Rectify cooling system faults.
Performance criteria
2.1
Safe working practices are observed throughout the task in accordance with
legislative requirements.
Range
personal safety – handling anti-freeze, hot pressurised cooling
system, keeping clear of moving parts, wearing protective clothing,
no loose objects, being aware of sharp edges, working in a
confined space, safety of others, equipment and boat safety.
2.2
Suitable tools and equipment are selected and used to enable cooling system
faults to be rectified in accordance with service information.
2.3
Causes of coolant leaks are rectified to restore full serviceability in accordance
with service information.
Range
2.4
engine water jacket components and gaskets, water pump, hoses
and pipes, housings and valves.
Any dirt and debris that would detract from normal cooling system efficiency are
removed without damage to the system in accordance with company
requirements.
Range
around engine, engine compartment, tank, heat exchanger, intake
screens, water filters, water exit.
2.5
Pump belt tension is adjusted to manufacturer specifications.
2.6
The cooling system is drained and flushed to remove all contaminants in
accordance with service information and legislative requirements.
2.7
The cooling system is filled with the manufacturer recommended coolant, to the
manufacturer specified level.
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2.8
The cooling system is bled of all air in accordance with service information.
2.9
Closed cooling system faults found are rectified in accordance with service
information.
Range
2.10
may include but is not limited to – coolant concentration;
thermostat replacement; coolant blockages cleared; water pump
repaired and replaced; sensors replaced; warning system
repaired; oil cooling system repaired; heat exchanger cleaned and
repaired; pressure cap replaced; pump belt replaced; bonding
straps replaced; corrosion, erosion, and contamination faults
rectified.
Open (raw water) cooling system faults found are rectified in accordance with
service information.
Range
may include but is not limited to – water intake restriction, coolant
blockages cleared and circulation checked, raw water pump
repaired and replaced, manifold repaired, sea cock repaired, water
filter replaced, corrosion and erosion faults rectified.
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)
janet.lane@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016