15467 version 3
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Level 3
Credits 6
Purpose This theory-based unit standard is for people in the trailer boat repair industry. People credited with this unit standard are able to demonstrate knowledge of trailer boat drive train layout, and drive train servicing requirements.
Subfield Motor Industry
Domain
Status
Status date
Date version published
Trailer Boat Systems
Registered
21 September 2007
21 September 2007
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 Definition
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.
2 Range
This unit standard includes all components fitted to sterndrives, outboards, and inboards between the engine and the propeller.
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New Zealand Qualifications Authority 2020

15467 version 3
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Element 1
Demonstrate knowledge of trailer boat drive train layout.
Performance criteria
1.1 Types of gears and their application are identified in accordance with service information.
Range bevel gears (straight, spiral), helical cut spur gears, straight cut spur gears.
1.2 Types of bearings found in marine transmissions and their applications are identified in accordance with service information.
Range ball, roller, needle, solid.
1.3 Gear thrust and bearing preload principles are identified in accordance with service information.
Range reason for thrust, use of thrust washers, reason for preload, methods of preloading bearings.
1.4 Drive train configurations are identified from the manufacturer diagrams.
Range inline, straight, drop shaft.
1.5 Oil seal O-ring and lip types and their applications are described in accordance with service information.
1.6 Main components and general layout of a drive train are identified in accordance with service information.
Range clutches (dog, cone), shift mechanisms (cable, hydraulic), marine hydraulic transmissions, hydrostatic drives, sail drives, sterndrives and outdrives, surface piercing drives, water jets, outboard gearcase, inboard propeller shaft assemblies, couplings.
1.7 The purpose of the transmission and the relationship between the input and output speeds and torques are described in accordance with service information.
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New Zealand Qualifications Authority 2020

15467 version 3
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Element 2
Demonstrate knowledge of drive train servicing requirements.
Performance criteria
2.1 Terms associated with drive train inspection and adjustment procedures are described in accordance with service information.
Range bearing preload, backlash, runout.
2.2 Types and grades of lubricants and sealants and their application to drive train components are identified from the manufacturer specifications.
2.3 Servicing procedures are identified from the service information.
Range clutches (dog, cone), shift mechanisms (cable, hydraulic), marine hydraulic transmissions, hydrostatic drives, sail drives, sterndrives and outdrives, surface piercing drives, water jets, outboard gearcase, inboard propeller shaft assemblies, couplings, mountings; inspection, lubrication, service adjustments, component replacement.
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.
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New Zealand Qualifications Authority 2020