HomeManufacturingCummins to Fix Connections of Emissions Control Devices in Blue Bird All...

Cummins to Fix Connections of Emissions Control Devices in Blue Bird All American School Buses

Blue Bird announced that it is working with diesel engine manufacturer Cummins to fix V-Band clamp assemblies used to connect the inlet and outlet cone sections to diesel oxidations catalysts and diesel particulate filters installed on model-year 2011 and 2012 All Americans.

In its NHTSA recall notice, Blue Bird explained that the V-Band clamp assemblies (part numbers Q187685 and Q187686) include a T-Bolt that can fracture and fail when subjected to stress or load. Such a fracture or failure, Blue Bird continued, may cause the clamp to loosen and the inlet or outlet sections attached to the DOC/DPF housing to disconnect.

As a result, hot exhaust gases can vent prior to exiting the tailpipe, which can lead to a fire. If both clamps fail, the DOC/DPF housing could detach completely.

Blue Bird said it is working with Cummins to identify owners of the buses, which were manufactured from Oct. 13, 2010 through March 8 of this year. A total of 860 All Americans are thought to be affected by the recall.

Starting this month, all fixes will be performed free of charge by authorized Cummins dealers.

A related recall affects some 24 Blue Bird All American nonschool buses.

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