24186 Install a Liquefied Petroleum Gas (LPG) Vehicle Fuel System
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Title / Install a liquefied petroleum gas (LPG) vehicle fuel system
Level / 4 / Credits / 4
Purpose / This unit standardis for people in automotive and related industries. People credited with this unit standard are able to prepare to install an LPG fuel system on a vehicle, and install an LPG fuel system on a vehicle.
Classification / Motor Industry > Automotive Fuel Systems and Exhaust
Available grade / Achieved
Prerequisites / Unit 24185, Demonstrate knowledge of liquefied petroleum gas (LPG) vehicle fuel systems, or demonstrate equivalent knowledge and skills.
Guidance Information
1Legislation and publications relevant to this unit standard include but are not limited to – Health and Safety in Employment Act 1992; Traffic Regulations 1976; Land Transport Rules: Vehicle Repair 1998, Rule 34001; Vehicle Standards Compliance 2002, Rule 35001/1; Vehicle Standards Compliance Amendment 2005, Rule 35001/2; New Zealand Standard AS/NZS 1425:2007 LP Gas for fuel systems for vehicle engines.
2Land Transport Rules are produced for the Minister of Transport by Land Transport New Zealand. These rules are available online at
New Zealand Standards are available from Standards New Zealand, Private Bag 2439, Wellington; phone 04 498 5990; or website
3Definitions
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.
LPG equipment manufacturer kit instructions refer to specifications and instructions provided by the equipment manufacturer for the correct installation and operation of the LPG component(s) or system(s) provided by that 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.
Outcomes and performance criteria
Outcome 1
Prepare to install an LPG fuel system on a vehicle.
Performance criteria
1.1Safe working practices are observed throughout the task in accordance with legislative requirements and AS/NZS 1425.
Rangepersonal safety, safety of others, vehicle safety, workshop safety, environmental safety, tools and equipment safety.
1.2The vehicle is inspected prior to installing LPG equipment, and the suitability for conversion is determined in accordance with LPG equipment manufacturer instructions and company requirements.
1.3The vehicle's intended use is verified with the owner, and the acceptability of conversion equipment relating to engine capacity determined in accordance with LPG equipment manufacturer instructions and company requirements.
1.4Suitable tools and equipment are selected and used to enable the installation to be carried out in accordance with LPG equipment manufacturer instructions.
Outcome 2
Install an LPG fuel system on a vehicle.
Performance criteria
2.1Safety precautions are taken when carrying out the installation in accordance with legislative requirements and AS/NZS 1425.
2.2The LPG conversion system is installed, following the recommended fitting sequences and procedures stated in AS/NZS 1425, and to the LPG equipment manufacturer instructions and legislative requirements.
2.3The vehicle's LPG system is commissioned following the procedure stated in AS/NZS 1425, and to the LPG equipment manufacturer instructions and legislative requirements.
Rangeinitial inspection, check on compliance, leak test, installation certificate issue, periodic inspection certificate issue.
2.4The engine is tuned to obtain optimum performance in accordance with vehicle manufacturer specifications where they exist, otherwise to LPG equipment specifications.
Rangeincludes but is not limited to – ignition system components, fuel system adjustments and modifications, exhaust emission relating to air fuel ratio, adaptation to electronic fuel injection systems, exhaust emission controls, driveability.
Replacement information / This unit standard and unit standard 24185 replaced unit standard 953.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 AssessmentRegistration / 1 / 25 January 2008 / 31 December 2020
Review / 2 / 26 April 2018 / 31 December 2020
Consent and Moderation Requirements (CMR) reference / 0014
This CMR can be accessed at
MITO New Zealand IncorporatedSSB Code 101542 / New Zealand Qualifications Authority 2018