The issue
POSSIBILITY THAT THE RELAY VALVES MAY HAVE PARTIALLY CURED DIAPHRAMS WHICH CAN CAUSE SPRING BRAKE APPLICATION AND BRAKE DRAG CAUSING THE VEHICLE TO SUDDENLY SLOW DOWN.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Blue Bird ALL CANADIAN NON-SCHOOL BUS | 1976 |
| Blue Bird ALL CANADIAN SCHOOL BUS | 1976 |