Kenworth · Canada · High
Kenworth T880, T660 +5 more: Brakes
Affects Kenworth T880, T660, W900, T680, T470, T440, T800 · 2016 — about 32 vehicles.
The hazard
Certain vehicles fail to comply with the requirements of Canada Motor Vehicle Safety Standard 121 - Air Brake Systems. The two service brake connections of the SR-7 spring brake valve assembly that provide the valve with feedback from the primary and secondary service brake applications may have been reversed during installation. Although the SR-7 valve would still function properly if there were normal reservoir pressure, in the event of a failure in the primary or secondary circuit, the redundant circuit would not provide adequate service brake functionality, and the vehicle would fail to meet the emergency brake system performance standard. This could result in reduced braking performance which could result in a vehicle crash. Correction: Dealers will inspect, remove and reconnect the air lines to the correct port of the SR-7 valve.
What to do
Contact your dealer; the remedy details were not included in the filing.