2006 Thomas Built Buses Fs-65

THIS INVESTIGATION WAS OPENED AFTER ODI RECEIVED A COMPLAINT FROM A FLEET INDICATING THAT THE BRAKE HOSES WERE RUBBING AGAINST THE TRANSMISSION DIPSTICK TUBE.ON APRIL 2, 2009, DAIMLER TRUCKS NORTH AMERICA LLC FILED A SAFETY RECALL TO INSPECTED AND REROUTE THE AFFECTED BRAKE HOSES AND ANYDAMAGED HOSES WILL BE REPLACED. THE RECALL NUMBER ASSIGNED IS 09V-114.THIS RECALL ACTION RESOLVES THE ISSUES RAISED BY THIS INVESTIGATION. ACCORDINGLY, THIS INVESTIGATION IS CLOSED.

THE OFFICE OF DEFECTS INVESTIGATION OPENED THIS PRELIMINARY EVALUATIONAFTERBECOMING AWARE THAT FLEETS WERE HAVING HANDLE FAILURES ON THE REAR EMERGENCY DOOR EXIT.THE FAILURE RESULTED IN THE DOOR HANDLE SEPARATING FROM THEDOOR LATCH MECHANISM.WHEN THE HANDLE FAILS, THE REAR EMERGENCY EXIT DOOR CAN NOT BE OPENED FROM OUTSIDE THE BUS.THE FAILURE RESULTS FROM CORROSION OF THE EXTERIOR DOOR HANDLE AROUND THE SECURING ROLL PIN AND SQUARE DRIVE LATCH MECHANISM, CAUSING THE PROTECTIVE FINISH TO CHIP AND FLAKE.CONTINUED CORROSION WEAKENS THE HANDLE AND EVENTUALLY THE HANDLE MAY BREAK WHILE TRYING TO OPEN THE EXIT DOOR.ODI WAS CONCERNED THAT DURING AN EMERGENCY, A PERSON OUTSIDE OF THE BUS WOULD BREAK THE DOOR HANDLE WHILE TRYING TO OPEN THE EMERGENCY EXIT DOOR,POTENTIALLY DELAYING EVACUATION OF THE BUS.UNDER THE SAFETY RECALL, THE ALUMINUM HANDLES WILL BE REPLACED WITH A MORE ROBUST HANDLE.THE RECALL ACTION RESOLVES THE ISSUES RAISED BY THIS INVESTIGATION. ACCORDINGLY, THIS INVESTIGATION IS CLOSED.

THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION AFTER BECOMING AWARE OF TWO SCHOOL BUS FIRES THAT STARTED IN THE SIDE MOUNTED ELECTRICAL FUSE PANEL ON A PAIR OF THOMAS BUILT SCHOOL BUSES.THEFLEET OWNER HAD REPORTED THE BUS INTERIORS FILLED WITH SMOKE, CERTAIN ELECTRICAL DEVICES BECAME INOPERATIVE, AND THE BUSES STALLED. THE TWO BUSES INVOLVED IN THE FIRE INCIDENTS HAVE CONSECUTIVE VIN NUMBERS AND THE FIRES WERE SIMILAR, BUT NOT IDENTICAL TO A PREVIOUS RECALL (06V-136) CONDUCTED BY THOMAS BUILT.THESE BUSES WERE NOT INCLUDED IN THE PRIOR RECALL, WHICH INVOLVED A DEFECTIVE POWER DISTRIBUTION MODULE (PDM).AFTER FURTHER TECHNICAL EVALUATION, FREIGHTLINER DECIDED THEY WOULD CONDUCT A SAFETY RECALL TO CORRECT DEFICIENCIES IN THEPREVIOUS RECALL AND ALSO EXPAND THE POPULATION TO CAPTURE ALL AFFECTED BUSES.THE CORRECTIVE ACTION FREIGHTLINER PLANS TO TAKE WILL BE FORWARDED TO ODI WHEN AVAILABLE. ACCORDINGLY, THIS INVESTIGATION IS CLOSED.

AS A RESULT OF THE ODI INVESTIGATION, FREIGHTLINER HAS AGREED TO RECALL (NUMBER 07V-289) ALL OF THE VEHICLES MANUFACTURED WITH STEERING COLUMNS POTENTIALLY MISSING WELDS.THE RECALL REMEDY WILL INVOLVE INSPECTING THE RECALLED VEHICLES FOR MISSING WELDS AND IF FOUND REPLACE THE STEERING COLUMN.EARLY WARNING AGGREGATE DATA SUBMITTED TO NHTSA BY FREIGHTLINER SUGGESTED THAT A STEERING PROBLEM (EWR CODE 01) EXISTED FOR THE 2004 AND 2005 CENTURY AND COLUMBIA CLASS VEHICLES.THE COUNT OF FIELD REPORTS SUBMITTED FOR THE FIRST QUARTER OF 2006 WAS HIGHER THAN THE AVERAGE OF THE PREVIOUS 6 QUARTERS FOR THE AGGREGATE STEERING DATA.ODI'S FURTHER REVIEW OF THE EWR DATA FOUNDFIELD REPORTS THAT DESCRIBED STEERING COLUMN FAILURES AS A RESULT OF STEERING COLUMN WELDS CRACKING OR BREAKING.INFORMATION RECEIVED FROM FREIGHTLINER DETAILED FAILURES OF THE STEERING COLUMNS ON THE SUBJECT VEHICLES.THESE FAILURES WERE THE RESULT OF MISSING AND CRACKED WELDS ON THE STEERING COLUMN ASSEMBLY.DURING TESTING OF VEHICLES CONTAINING DEFECTIVE STEERING COLUMNS, ODI DETERMINED THAT WELD FAILURES IN THE STEERING COLUMN CREATE A SITUATION WHERE THE VEHICLE BECOMES DIFFICULT TO STEER OR MAY STARTLE THE DRIVER UPON FAILING, THUS PRESENTING A SAFETY RISK.A COPY OF THE RECALL IS ATTACHED.FREIGHTLINER'S ACTION RESOLVES THE ISSUES RAISED BY THIS INVESTIGATION AND, THEREFORE, THIS INVESTIGATION IS CLOSED.

UPPER STEERING SHAFT PINCH BOLT NOT TIGHTENED/INSTALLED RESULTING IN JOINT SEPARATING FROM MAIN STEERING SHAFT AND TOTAL LOSS OF STEERING CONTROL.NEW PINCH BOLT INSTALLED AND TIGHTENED TO FACTORY SUPPLIED TORQUE VALUES. SUPERFICIAL DAMGE TO SCHOOL BUS BODY REPAIRED WITH REPLACEMENT PARTS.

NHTSA ID

10177048

Incident

Dec 5, 2006

Mileage

14,625 mi

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