BLUE BIRD recall on ALL AMERICAN NON-SCHOOL BUSALL AMERICAN SCHOOL BUS,VISION SCHOOL BUS and 1 more model

On certain school and transit buses, the internal rubber check valve inside the Bendix SR-7 spring brake modulating valve can become deformed over time. The effect of this defect is intermittent and presents a potential delay or failure in applying the parking brakes; potentially resulting in a vehicle roll away. Should this occur, the unattended roll away vehicle could strike a bystander or cause property damage. Correction: Dealers will install a check valve repair kit.