FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Sep 12, 1996
101 units potentially affected
The defect: THE INCORRECT ELECTRICALMOTOR WAS INSTALLED ON THE FUEL PUMP THAT SUPPLIES FUEL TO THE ENGINE. THE MOTOR WAS SPECIFIED TO BE A CONTINUOUS DUTY MOTOR AND THE MOTORS INSTALLED WERE INTERMITTENT DUTY MOTORS. THE INTERMITTENT DUTY MOTORS UNDER CERTAIN CONDITIONS WILL OVERHEAT RESULTIN IN A THERMAL SWITCH SHUT DOWN OF THE ELECTRIC MOTOR.
The risk: THIS CONDITION WILL STOP THE FLOW OF FUEL TO THE BUS ENGINE AND THE VEHICLE WILL THEN STALL INCREASING THE POTENTIAL FOR A VEHICLE ACCIDENT.
The remedy: DEALERS WILL REPLACE ALL THE INTERMITTENT DUTY MOTORS WITH CONTINUOUS DUTY CYCLE MOTORS.
CARPENTER INDUSTRIES, INC.View on NHTSA.gov