2010 NOVA BUS NOVA LFS

STRUCTURE:BODY:DOOR

Nova Bus (Nova) is recalling certain model year 2010-2015 Nova LFS and 2013-2015 LFS Artic transit buses. The affected vehicles are equipped with an optical sensor for the passenger counter system whose location may result in a passenger's arm being pinched between the passenger counter housing and the door.

Risk: A passenger could be injured if their arm is caught in the door.

POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT

Nova Bus (Nova) is recalling certain model year 2009-2010 LFS transit buses manufactured January 1, 2009, to December 31, 2010 with ZFAV132 rear axles. The affected vehicles may have been produced with rear axle half shafts that received an inadequate surface treatment which may result in axle shaft failure.

Risk: If the axle half shaft fails, the bus would be disabled, increasing the risk of a crash.

SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT

Nova Bus is recalling certain model year 2004 and 2006-2013 LFS transit buses. Due to a programming error in the vehicle control unit, the ABS malfunction light may not illuminate if the ABS control unit loses power. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard No. 121, "Air Brake Systems."

Risk: If the ABS malfunction light does not illuminate if the ABS control unit loses power, the driver would not be aware that the ABS is not functional and that the brakes may unexpectedly lock up under certain conditions when the brakes are applied, increasing the risk of crash.

ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

Nova Bus is recalling certain model year 2010-2014 LFS transit buses manufactured June 2010 to June 2014. In the affected vehicles, the terminal on the postive alternator cable may fracture causing the cable to arc to other components.

Risk: Arcing of the alternator cable may result in an engine compartment fire.

ELECTRICAL SYSTEM

Nova Bus is recalling certain 2009-2012 model year LFS and LFS HEV transit buses equipped with Sure Power DC-DC converters containing a particular epoxy sealing, aka 'potting', compound. The specific potting compound used in the subject products for insulation was found to be capable of conducting electricity after being exposed to heat.

Risk: Once electrically conductive, the material is capable of melting and burning, increasing the risk of a fire.

VISIBILITY:GLASS, SIDE/REAR

Nova Bus is recalling certain model year 2010 LFS transit buses manufactured June 10, 2010, through November 11, 2010; and equipped with flush mounted windows and Ricon 3-Minute Urban Transit Bus egress window sets. The composition of the material used to cast the handles is incorrect resulting in embrittlement of the handle and a reduction in material strength. The handle(s) on the emergency egress passenger windows may break before the window latch is released.

Risk: In the event the egress window fails during an emergency situation, passengers may be trapped in the bus placing them at risk of injury.

ENGINE AND ENGINE COOLING

NOVA BUS IS RECALLING CERTAIN MODEL YEAR 2010 LFS BUSES MANUFACTURED FROM SEPTEMBER 1, 2010, THROUGH DECEMBER 31, 2010, EQUIPPED WITH A CUMMINS ISB, ISX, ISC OR ISL DIESEL ENGINE. THE V-BAND CLAMP ASSEMBLY, PART NUMBERS Q187684, Q187685, AND Q187686, USED TO CONNECT THE INLET AND OUTLET CONE SECTIONS TO THE DIESEL OXIDATION CATALYST (DOC)/DIESEL PARTICULATE FILTER (DPF) INCLUDE A T-BOLT WHICH CAN FRACTURE AND FAIL WHEN SUBJECTED TO STRESS OR LOAD. A FRACTURE OR FAILURE OF THE T-BOLT MAY CAUSE THE CLAMP TO LOOSEN AND THE INLET OR OUTLET SECTIONS ATTACHED TO THE DOC/DPF HOUSING TO DISCONNECT.

Risk: IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH COMPLETELY, CREATING A ROAD HAZARD.

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING

NOVA BUS IS RECALLING CERTAIN MODEL YEAR 2007-2010 TRANSIT BUSES EQUIPPED WITH ATC (AUTOMATIC TRACTION CONTROL) SYSTEM AND V-BEA MULTIPLEXING SYSTEM MANUFACTURED FROM APRIL 2, 2007 THROUGH JUNE 30, 2010. THE ATC SYSTEM MAY INADVERTENTLY ACTIVATE WHENEVER THE PARKING BRAKE OR THE BRAKE INTERLOCK IS APPLIED, SINCE THE VEHICLE'S MULTIPLEX PROGRAM DID NOT CORRECTLY SEND THE PARKING BRAKE OR INTERLOCK SIGNAL TO THE ATC SYSTEM. THE ATC SYSTEM COULD MISINTERPRET THIS SITUATION AS WHEEL SPIN, SUBSEQUENTLY APPLYING AND RELEASING THE APPLIED BRAKES. THE VEHICLE COULD THEN MOVE UNEXPECTEDLY.

Risk: THE VEHICLE MAY MOVE INADVERTENTLY EVEN WHEN THE PARKING BRAKE IS APPLIED INCREASING THE RISK OF A CRASH.

ENGINE AND ENGINE COOLING

NOVA BUS IS RECALLING CERTAIN MODEL YEAR 2009-2010 NOVA LFS 40 FT AND MODEL YEAR 2010 NOVA LFS 60 FT T-DRIVE TRANSIT BUSES MANUFACTURED FROM AUGUST 27, 2007 THROUGH NOVEMBER 11, 2010, EQUIPPED WITH CUMMINS ISL OR ISB ENGINES. THE BOLTS ON THE ENGINE CRADLE WERE NOT TORQUED ACCORDING TO APPROPRIATE SPECIFICATIONS.

Risk: THE BOLTS CAN BE WORN PREMATURELY AND BREAK OFF, INCREASING THE RISK OF A CRASH.

ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

NOVA BUS HAS NOTIFIED NHTSA ABOUT A DEFECT IN CERTAIN MODEL YEAR 2007-2010 LFS BUSES EQUIPPED WITH MODINE ROOF MOUNTED RADIATOR. THE WRONG TYPE OF O-RING WAS INSTALLED AT THE LOCATIONS BY THE RADIATOR MANUFACTURER, MODINE. THE O-RINGS MUST BE VITON TYPE O-RINGS.

Risk: DETERIORATION OF THESE O-RINGS MAY OCCUR AND LEAKING OR SEEPAGE OF HYDRAULIC OIL.