Polar Tank MC 331 Tank Trailer, Dot 412 Tank Trailer +3 more: Parking brake

Affects Polar Tank MC 331 Tank Trailer, Dot 412 Tank Trailer, Dot 406 Tank Trailer, Non-Code Tank Trailer, Dot 407 Tank Trailer · 2014–2016 — about 109 vehicles.

The hazard

If there is a delay of the spring brake application, the trailer may roll away after it has decoupled from the tractor, increasing the risk of a crash or injury.

What to do

Polar Tank Trailer will contact owners and provide a remedy kit, complete with instructions, to repair any affected SR-5 trailer relay valves, free of charge. The recall began on October 3, 2016. Owners may contact Polar Tank customer service at 1-320-746-2255.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational