Cert III Mobile Plant
AUR31220 Certificate III in Mobile Plant Technology
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ExploreAbout this exam
AUR31220 Certificate III in Mobile Plant Technology is an Australian vocational qualification for people who service, diagnose and repair mobile plant machinery in the automotive retail, service and repair industry. It suits apprentices and working technicians who want a recognised trade-level credential covering heavy plant, forklifts or elevating work platforms. The qualification requires 36 units: 9 core units plus 27 electives. All units from one specialist group must be taken - Group A Mobile Plant Equipment (13 units), Group B Forklift (9 units) or Group C Elevating Work Platform (11 units) - and the remaining electives may come from the specialist groups, the general elective list, or up to 6 units from a Certificate II or above in this or another endorsed Training Package or accredited course. The completed specialisation appears on the testamur. Core study builds safe and environmentally responsible work practices, basic electrical circuit testing, battery service, hydraulic system inspection, servicing operations, bearings and seals, diagnostic test strategies, and tool maintenance. There are no entry requirements and no licensing, legislative or certification requirements apply at the time of publication. To prepare, confirm which specialist group your employer or registered training organisation will deliver, then work through the core units first because they underpin every diagnostic task. Practise reading hydraulic and electrical schematics, build familiarity with diagnostic test strategies, and revise unit content rather than memorising question banks.
What you'll study
About Cert III Mobile Plant preparation
How many units must I complete for AUR31220?
You need 36 units in total: 9 core units plus 27 elective units. Within the electives you must complete every unit in one specialist group - 13 for Mobile Plant Equipment, 9 for Forklift, or 11 for Elevating Work Platform - with the remainder drawn from the listed elective banks.
Are there any entry requirements?
No. The National Training Register lists entry requirements as nil. There are also no licensing, legislative or certification requirements applying to the qualification at the time of publication, although individual employers may set their own pre-employment expectations.
Which specialist group should I choose?
Choose the group that matches the machinery you actually work on. Group A suits earthmoving and heavy plant technicians, Group B suits forklift servicing, and Group C suits elevating work platform work. The specialisation you complete is identified on your testamur, so pick deliberately rather than by unit count.
Can I include units from outside this qualification?
Yes, within limits. Up to 6 of the elective units may be from a Certificate II qualification or above in this Training Package, another endorsed Training Package, or an accredited course. Chosen electives must be relevant to the work environment and must not duplicate another selected unit's outcome.
What does the core cover?
The 9 core units cover environmental and sustainability best practice, safe working practices, basic electrical circuit testing, battery testing and charging, hydraulic system inspection and servicing, servicing operations, bearings, seals, gaskets and sealants, diagnostic test strategies, and tool and equipment maintenance.
How should I sequence my study?
Start with the core units, especially safe working practices, tools and equipment, and servicing operations, because later diagnostic units assume those skills. Then move into your specialist group's hydraulic, braking, steering and driveline units before attempting engine management and forced-induction diagnostics.
What are common reasons candidates struggle?
Candidates often underestimate diagnostic test strategy units, which require structured fault-finding rather than parts swapping. Hydraulic and electrical faults are also frequent weak points. Practise interpreting circuit and hydraulic diagrams and explaining your reasoning, not just reaching a repair.
How is the qualification assessed?
Assessment is competency based and delivered by a registered training organisation, combining knowledge evidence with practical tasks in a real or simulated workplace. The National Training Register does not publish an exam duration, passing score or fee for this qualification.
Does the qualification expire or need renewing?
The source does not state a validity period for AUR31220, so no expiry figure should be assumed. Note that the qualification has been revised through several releases, with Release 4 revising the elective bank, so confirm you are enrolled in the current release.
Is a forklift or EWP licence included?
Not automatically. Licensing units such as TLILIC0003 and TLILIC0005 appear only in the general elective list, and the qualification itself carries no licensing requirements. Check with your training provider whether a licensing outcome is included in your particular enrolment.