Over 9,000 more trailers recalled over parking brake issue

By Land Line staff | Wednesday, August 10, 2016

Another round of manufacturers are recalling trailers due to an issue with Bendix spring valves. More than 9,000 Manac, Polar Tank, Heil and Hyundai trailers are affected in this latest notice, according to National Highway Traffic Safety Administration documents.

On June 8, NHTSA sent out a recall notice regarding an issue with nearly 195,000 Bendix SR-5 trailer spring brake valves. According to NHTSA, brake valves were improperly machined without a radius on the internal check valve seat, causing a delay of application of the spring brakes while parking.

Bendix’s public relations firm reached out to Land Line via email on July 29, and offered their own description of the problem: “Under a combination of a unique set of circumstances, it is possible (though not probable) for an internal leakage to develop in the SR-5 unit, resulting in slow-to-apply spring brakes when parking the trailer.”

On Tuesday, Aug. 9, NHTSA sent out a recall notice with specific makes and models of trailers affected by the recall. Affected trailers include:

  • 2016 Manac flatbed trailers
  • 2017-2018 Manac van trailers
  • 2014-2016 Polar Tank DOT 406 tank trailers
  • 2014-2016 Polar Tank DOT 407 tank trailers
  • 2014-2016 Polar Tank DOT 412 tank trailers
  • 2014-2015 Polar Tank MC 331 tank trailers
  • 2014-2016 Polar Tank non-code tank trailers
  • 2014-2016 Heil crude trailers
  • 2014-2016 Heil dry bulk trailers
  • 2014-2016 Heil flatbed trailers
  • 2014-2016 Heil petroleum pull trailers
  • 2004-2016 Hyundai Translead chassis
  • 2004-2016 Hyundai Translead containers
  • 2004-2016 Hyundai Translead van reefer trailers
  • 2004-2016 Hyundai Translead van trailers

The SR-5 valve is a reservoir-mounted trailer valve that can control four spring brake actuators during parking or emergency applications, a NHTSA safety recall report explains. A trailer will have an audible air leak from the dash mounted park control valve or red gladhand when it is disconnected, prior to decoupling when a slow-to-park situation occurs. This leakage will continue until the trailer reservoirs and spring brake chambers are depleted of air pressure.

In July, approximately 10 manufacturers recalled a total of more than 30,000 trailers over the same issue.

Remedies for this recall are still under development. Expected recall dates vary by manufacturer. Owners of potentially affected trailers can contact NHTSA at 888-327-4236. NHTSA recall number for the original Bendix equipment recall is 16E-045.

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