1993 International Harvester 3600

THESE BUSES HAVE A TURN SIGNAL LEVER THAT WILL NOT OPERATE CONSISTENTLY IN THE LANE CHANGE MODE IF THE LEVER IS NOT MOVED TO THE POSITION WHERE RESISTANCE TO MOVEMENT IS FELT.

RiskSHOULD THE REAR SIGNAL LAMPS NOT FLASH WHEN A LANE CHANGE WAS BEING MADE, IT COULD RESULT IN A VEHICLE FOLLOWING THE BUS TO COLLIDE WITH THE BUS INCREASING THE RISK OF PERSONAL INJURY AND/OR PROPERTY DAMAGE.

FixOPERATORS WILL BE MAILED INFORMATION CONCERNING THE PROPER METHOD OF USING TURN SIGNALS. A DECAL WILL ALSO BE PROVIDED TO BE PLACED ON THE INSTRUMENT PANEL OF EACH BUS.

THE WIRING FROM THE ELECTRONIC CONTROL UNIT WAS CONNECTED TO THE WRONG WHEEL SENSOR OR TO THE WRONG BRAKE MODULATOR VALVE. IT IS POSSIBLE THAT EITHER OR BOTH WIRING MAY HAVE OCCURRED AT EITHER THE FRONT OR REAR AXLE OR BOTH AXLES.

RiskSHOULD THE ANTI-LOCK BRAKING SYSTEM (ABS) WIRING BE CROSSED, IT WOULD RESULT IN A SIGNIFICANT DEGRADATION IN VEHICLE STOPPING DISTANCE. A SIGNAL WOULD BE SENT TO THE WRONG BRAKE CHAMBER WHEN A BRAKE IMBALANCE IS DETECTED. THIS CONDITION INCREASES THE RISK OF A VEHICLE ACCIDENT.

FixDEALERS WILL INSPECT THE ABS WIRING AND, IF NECESSARY, PROPERLY CONNECT.

THE FUEL HOSE TO THE FUEL FILTER IS ROUTED TOO CLOSE TO THE ALTERNATOR BELT CAUSING THE ALTERNATOR BELT TO RUB THE FUEL HOSE. THIS CAN CAUSE A FUEL LEAK.

RiskFUEL LEAKAGE CAN RESULT IN A VEHICLE FIRE IF AN IGNITION SOURCE IS PRESENT.

FixDEALERS WILL STRAP THE FUEL HOSE TO THE CHASSIS FRAME TO INSURE A MINIMUM OF 2 1/2" CLEARANCE BETWEEN THE FUEL HOSE AND THE ALTERNATOR BELT.

THE HYDRAULIC STEEL BRAKE LINES FROM THE MASTER CYLINDER TO THE FRAME FITTINGS ARE EXPERIENCING VERTICAL FLEXING WHICH CAUSES FATIGUE CRACKS AT THE FRAME END OF THE ASSEMBLY, RESULTING IN BRAKE FLUID LEAKAGE. THIS CAN OCCUR IN ONE OR BOTH OF THE STEEL BRAKE LINES. IN EITHER CASE, THE BRAKE WARNING LIGHT WILL COME ON AND THE LOW PRESSURE BUZZER WILL ACTIVATE.

RiskSHOULD A CRACK AND LEAKAGE DEVELOP IN ONE OF THE LINES,HALF OF THE BRAKING SYSTEM CAPABILITY COULD BE LOST, IMPAIRING THE STOPPINGABILITY OF THE VEHICLE. IF BOTH BRAKE LINES FAIL, THE ENTIRE SERVICE BRAKINGSYSTEM WILL BECOME INOPERATIVE. IN EITHER CASE, AN ACCIDENT COULD RESULT,CAUSING DAMAGE TO THE VEHICLE AND PERSONAL INJURY.

FixNAVISTAR DEALERS WILL INSTALL A NEW, REDESIGNED PRIMARY AND SECONDARY BRAKE LINE FROM THE MASTER CYLINDER TO THE FRAME RAIL FITTINGS.

THE PRESSURE RELIEF VALVE WAS OMITTED IN THE AIR TANK. THE AIR TANK IS THE RESERVOIR FOR THE AIR SUSPENSION AND IS NOT BRAKE RELATED. WITHOUT THE PRESSURE RELIEF VALVE, THERE IS NO BACK-UP SYSTEM TO LIMIT AIR PRESSURE IN THE AIR SUSPENSION SYSTEM.

RiskLACK OF A BACK-UP SYSTEM TO LIMIT AIR PRESSURE BUILD UPCAN CAUSE EXCESSIVE PRESSURE IN THE AIR TANK AND CAN CAUSE THE TANK TO RUPTURE.THIS CAN RESULT IN PERSONAL INJURY TO ANYONE IN THE VICINITY.

FixINSTALL A PRESSURE RELIEF VALVE IN THE AIR TANK.

THE BRACKET THAT SUPPORTS AND POSITIONS THE HAND THROTTLE CABLE AT THE ACCELERATOR ROD CAN BE BENT OR MISALIGNED DURING BODY ASSEMBLY TO THE CHASSIS.

RiskBENT OR MISALIGNED THROTTLE CABLES CAN CAUSE THEACCELERATOR TO STICK IN PARTIAL TO FULL THROTTLE POSITION, RESULTING A UNWANTEDVEHICLE SPEED AND A POSSIBLE VEHICLE ACCIDENT.

FixREPLACE THE CURRENT THROTTLE CABLE BRACKET WITH A NEW BRACKET; INSTALL AT A DIFFERENT LOCATION.