Transport CanadaCritical
At a glance
What can fail
A faulty check valve in the secondary air brake reservoir allows pressure loss from the primary reservoir to drain the secondary reservoir, potentially causing complete brake failure with no warning. Rear spring brakes only engage if pressure drops below 60 psi.
What the fix does
Install redesigned check valve components in the secondary service reservoir on affected vehicles.
3,103 vehicles affected
Transport Canada #1990097 — full official notice →Summarized — see the official notice for exact wording, dates, and contacts.