OKAJARO
CARAVAN & TRAILER ATM UPGRADE
Mobile Service - we come to you - South East Queensland
Certification of Trailer Modifications (LS12)
GET LEGAL
An ATM upgrade will ensure that your caravan/trailer is compliant at a higher load rating, minimising the risk of facing legal or insurance complications
MORE PAYLOAD
We will determine what load your caravan/trailer chassis is capable of handling whilst remaining within safe structural guidelines
PEACE OF MIND
An ATM upgrade will not only ensure that your caravan/trailer becomes compliant, but also give you peace of mind knowing that it satisfies structural requirements
HOW DOES AN ATM UPGRADE WORK?
We are a mobile service, operating in the greater Brisbane area. Contact us to arrange a free assessment of your trailer or van, usually within the next day or two. If the numbers add up and the assessment is favourable, our engineer will come out and inspect your trailer firsthand. Once approved, he will issue a TMR certificate and attach a modification plate on the spot.
Due to the way many caravans are constructed and rated, modifications are often not necessary to achieve an increase in ATM.
In most cases we can give you a confident indication of the maximum ATM possible on your van within a couple of days, so contact us today to arrange an assessment.
ATM RERATING is required when:
- More load carrying capacity is needed
- The trailer is over its rated ATM
- Looking for legal compliance
- Trailer has been upgraded or modified
- ATM reduction is required
- Just want some peace of mind
TRAILER CERTIFICATION is required when:
- Chassis, drawbar, suspension, brakes or other modifications have been made
- Modified wheel/tyre diameter, width, track width or wheel offset
- Coupling replacements over 3500kg ATM or if the coupling mounting position differs from the original
- Modification to safety chain attachment points
ATM UPGRADE CHECK LIST
All the items below have to be assessed to ensure they comply at the increased ATM:
- COUPLING – must be rated to new ATM or more
- CHAINS – number of chains, size, type & attachment points
- AXLE & SUSPENSION – must be rated to new GTM or more
- BRAKE-AWAY – required over 2T GTM
- WHEELS – sum of load rating equal or more than GTM
- TYRES – sum of load rating equal or more than GTM
- BRAKES – must be efficient at new rating
- DRAWBAR – must comply with ADRs at new ATM rating
- CHASSIS – must be shown to have sufficient strength at new ATM rating
See our Glossary of Terms
Gallery
TRAILER WEIGHT
It is not mandatory to have your trailer weighed for certification purposes; however, it is highly recommended to have an accurate idea of the actual weight of your trailer in the maximum loaded condition. Herewith some contacts if you need help with this:
Brisbane – WeightCheck, David Lewis, 0477897700
Brisbane – Total Towing Setups, Gary Gardiner, 0427751756
Samford – Mobile Weight Check, Ben Myers, 0411645998
Brisbane Southside – GVM Check, Rod Bailey, 0407240702
Gold Coast – EZI-Weigh, John Cahalane, 0480171701
Sunshine Coast – EvaluWeight, David Hogg, 0493255277
Toowoomba – Western Weigh, Shane, 0438506939
FAQs
Contact us to arrange a free assessment of your caravan/trailer, which can usually be done within a few days. If the numbers add up and the assessment is favourable, and you wish to proceed with the ATM upgrade, our engineer will come out and inspect and certify your trailer/van. He will issue a TMR certificate and attach a modification plate on the spot.
On receipt of the completed Assessment Form and pictures of the caravan/trailer, we will provide you with a report within a few business days. Depending on your urgency we should be able to certify your ATM upgrade within 1 to 3 weeks. Contact us now to get the ball rolling.
It is not mandatory to have your trailer weighed for certification purposes; however, it is recommended to have an accurate idea of the actual weight of your caravan or trailer, in the maximum loaded condition. If you need help with this, see the trailer weight section for contact details.
Although we do not perform modifications ourselves, we are well connected and can point you in the right direction. Whether you simply need safety chains replaced or major structural work done, we know someone that can help. Once modifications are complete, we would inspect, certify modifications or rerate the ATM as required.
We are based near Brendale, about 30minutes north of the Brisbane CBD
We cover the greater Brisbane area from Caboolture, Ipswich, Ormeau and everywhere in between. Other areas by appointment. Call-out fees may apply.
We gladly accept card payment after certification with mobile EFTpos facility. We also take cash and can facilitate bank transfer with prior arrangement.
GLOSSARY OF TERMS
- Aggregate Trailer Mass (ATM) – Total weight of trailer, including cargo and ball weight
- Axle Group – either a Single Axle, Tandem Axle Group, Tri-axle Group, or Close Coupled Axle Group.
- Coupling – Device that joins your trailer to the towing vehicle, ie: 50mm ball, DO35
- Drawbar – portion of a trailer that connects the trailer body to the coupling for towing purposes.
- Emergency Brakes – that part of the brake system which automatically applies in the event of trailer break-away.
- Gross Trailer Mass (GTM) – Load carried over the trailer axles
- Over-Run Brakes – a brake system actuated by the deceleration of the tow vehicle, applying a longitudinal force to the trailer through the coupling.
- TARE – Weight of trailer only, unladen
- Tow ball load (ball weight) – The proportion of trailer weight that is applied vertically to the rear of the tow vehicle.
- VIN – A 17-character vehicle identification number (VIN)
- VSB1 – Vehicle Standards Bulletin 1, a summary of trailer requirements
About US
We have been proudly providing trailer engineering and design services since 2008. Key to our team is registered professional engineer, Deon van Deventer, who has a strong technical background and formal engineering qualifications. He has extensive automotive, manufacturing and trailer industry experience, which includes design and development, through to testing independent suspension systems, couplings, off-road trailers and advanced trailer chassis. He has assisted numerous caravan and trailer manufacturers with development of their products for manufacture both locally and abroad. He has a keen interest in chassis design, particularly in the areas of suspension and structural compliance.
Deon is a TMR (Queensland Transport and Main Roads) approved engineer, authorised to conduct rerating of ATMs, certify modifications to light and heavy trailers (under or over 4.5T ATM) and approve modifications to local and imported vehicles and trailers in accordance with Queensland Code of Practice.
Please read our ATM upgrade procedure
- To make an accurate assessment of your caravan/trailer, we require that you to provide information of the caravan/trailer via our ASSESSMENT FORM.
- Once the required information has been returned to us, we will provide you with a report stating whether an upgrade is possible, what the maximum ATM could be and/or what the limiting factors are. There is no cost to you up to this point.
- If an upgrade is possible and you wish to proceed, we will arrange an inspection, where the details will be verified, and the necessary compliance checks made. If everything is in order, we will proceed with an ATM upgrade, attach a vehicle modification plate (blue plate) to the trailer and issue a modification certificate. We will also provide you with a “change of vehicle details” form as required by QLD Transport.
- If you would like to proceed with the assessment, please send us your EMAIL ADDRESS via the CONTACT FORM below.