NHTSA recall 00V162000
Service brakes, air › Controls › Foot control/valve
Blue Bird All American and 5 more
Reported Jun 12, 20009,687 vehicles affectedBLUE BIRD BODY COMPANYMaker’s number R00DXBuilt Oct 15, 1997 – May 31, 2000
The defect
Vehicle description: school and transit buses equipped with bendix air brakes. bendix changed the internal design of the QR1C relay valve by adding a hole in the internal diaphragm. when the hole in the diaphragm aligns with the hole in the valve body, the brake application time increases.
The risk
Under certain conditions, such as parked on an incline, driver activates the parking brake but removes foot from the threadle valve, the bus could roll before the parking brake IS fully engaged.
The remedy
Dealers will replace the diaphragms with holes with solid diaphragms for the QR1C valves.