United States 90V077000
Blue Bird Body Company
The problem
BENDIX HYDRAULIC BRAKE BOOSTER MAY MALFUNCTION UNDER CERTAIN COMBINATIONS OF FLUID TEMPERATURE AND BRAKE PEDAL FORCE.
Risk
THIS WOULD CAUSE THE BRAKE BOOSTER TO SELF-APPLY AND RESULT IN FULL BRAKE APPLICATION, WITHOUT WARNING, WHICH COULD RESULT IN AN ACCIDENT.
What owners should do
REPLACE HYDRAULIC BRAKE BOOSTER.
Units 308