Waka Kotahi NZ Transport Agency has issued this safety alert after several failed drawbar hinge pins resulted in failures of the drawbar and trailer separation.
This safety alert applies to all heavy full trailers with drawbar hinge kits.
The key points of the alert are:
We're assessing failed pins to determine how to manage the risk going forward. We'll update this page and the alert when more information is available.
Waka Kotahi NZ Transport Agency issued a safety alert following several incidents where a Cardan shaft park brake has failed. Four of these incidents in the last 10 years have resulted in fatalities.
It's important that owners and drivers understand how these park brakes are designed, how they function and how they should be used. Mechanics must be able to correctly diagnose, maintain and adjust these systems to the manufacturer’s specifications.
The key points of the alert are:
Users of seatbelt extenders (extensions) in vehicles should check the product labels following safety concerns.
Testing conducted by the Transport Agency has shown that seatbelt extenders without labels showing compliance with an approved standard are highly likely to fail at loads below a safe standard. This places seat occupants at greater risk in the event of a crash or sudden stop.
If there is no label showing compliance with an approved standard, the seatbelt extender should not be used. The safety alert lists the standards to look for.
Park brake control valve maintenance and operational requirements for Nissan CK330, CW330, CW380, CW400, CM180, CW400 and CG400 vehicles manufactured between 1993 and 2005.
Further to the safety alert of May 2017, the Transport Agency is telling CoF inspectors and operators of these Nissan trucks to urgently and carefully check the park brake. This is necessary because once wear occurs, the lock pin is able to hold the park brake on but it may not be fully engaged. Consequently, the park brake can be unintentionally released by a knock or vibration.
It’s important to check if the park brake lever can sit with the locking pawl only partially engaged. If so, the vehicle must not be operated until the hand control has been serviced or replaced. It should also be failed for any CoF.
The NZ Transport Agency has issued a safety alert advising that drawbar and drawbeam connections certified by Auckland based Mr Patrick Chu (Transport & Structure Ltd) are being revoked.
The NZ Transport Agency has issued a safety alert advising that tow bar connections certified by Auckland based Mr Patrick Chu (Transport & Structure Ltd) have been revoked from today (21 December 2018).
Tow bars on heavy vehicles [including small trucks, tipper trucks, motor homes and goods’ vans], certified by Patrick Chu (Transport & Structure Ltd) have been revoked from 21 December 2018 due to urgent safety concerns.
Mr Chu applied the wrong assessment standard which means the tow bars were incorrectly certified. This means that during the current period of certification the trailer could detach from the vehicle (including the safety chain).
The vehicles’ ability to tow any load has been revoked until the tow bar is re-certified.
Questions and answers about this safety alert [PDF, 1.2 MB] – December 2018 (updated 7 February 2019)
The NZ Transport Agency has issued this safety alert due to the identification of sub-standard work in certain heavy vehicle specialist certifications (also known as ‘LT400s’) issued by Heavy Vehicle Specialist Certifier (HVSC) Patrick Chu.
Issues have been identified in respect of both towing connections and chassis certified by Patrick Chu. As a result, the Transport Agency has revoked some certifications issued by Patrick Chu. These revocations have been for reasons including that towbars had been certified beyond their viable design life, and chassis had been certified despite being significantly over-stressed.
The Transport Agency is currently analysing certain files relating to certifications issued by Patrick Chu in respect of towing connections and chassis in heavy vehicles. The Transport Agency will update vehicle owners in the event further risk is identified.
At present, certifications issued by Patrick Chu that have not been revoked by the Transport Agency remain technically valid, though for the reasons set out the Transport Agency strongly encourages owners to be extra vigilant as regards safety where components in their vehicles have been certified by Patrick Chu, and to follow the steps in the safety alert.
Questions and answers about this safety alert [PDF, 568 KB] – December 2018
The NZ Transport Agency first issued a safety alert in October 2018 advising vehicle owners who have retrofitted seatbelts to check the labels on their seatbelts following safety concerns. We have updated the safety alert and questions and answers following Transport Agency tests and investigations indicating seatbelts imported by Business Ventures Limited (BVL) and manufactured either by Changzhou BWD China or by Jiang Su Jiu Jiu Traffic Facilities Co. Ltd. do not meet an approved safety standard.
Full information is available at: www.nzta.govt.nz/bvl-retrofitted-seatbelts
This safety alert has been issued following issues identified in drawbeam, drawbar and towbar certifications by Dick Joyce (heavy vehicle specialist certifier identification: RJJ).
This safety alert has been issued following the identification of failures in towing connections involving drawbeams and drawbars certified by Peter Wastney Engineering Ltd.
This safety alert has been issued following an on-road incident where the skid plate on a MaxiTRANS refrigerated semi-trailer failed due to internal structural cracks, resulting in the semi-trailer partially separating from the towing vehicle.
Park brake control valve maintenance and operational requirements for Nissan CK330, CW330, CW380, CW400, CG380, CW400 and CG400 vehicles manufactured between 1993–2005.
The Nissan Diesel Owner’s Manual recommends that the park brake hand control valve is overhauled at 12-month intervals. It also recommends that the valve’s operation is thoroughly checked by a qualified diesel technician when the vehicle is being serviced or if there is concern about its operation.
The Transport Agency is investigating a catastrophic failure of a truck drawbeam that resulted in a laden heavy trailer separating on 18 October 2016.
Urgent work is underway to identify any other affected trucks so that they can be checked, with one already withdrawn from the same fleet where the drawbeam showed signs of fatigue cracks.
In the meantime, this safety alert is asking truck operators, service personnel and vehicle inspectors to check for signs of cracks in drawbeams.
This safety alert has been issued by the NZ Transport Agency following recent incidents where heavy trailers have separated from the towing vehicle, specifically where the drawbar was fitted with a bolt-in tow-eye which pulled out.
What you should do: