On one school bus, the fuel rail assembly could develop a leak.
A fuel leak can create the risk of a fire.
Cummins will notify the owner by mail and instruct them to take their bus to a Cummins authorized service center to inspect the fuel rail. If damage is found, the fuel rail and fuel lines will be replaced. If no damage is found, the fuel rail will be reassembled with new crush washers using a special tool.