international harvester 3900fc 1992 Recalls Check Results
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international harvester 3900fc 1992
SUMMARY
THE HYDRAULIC BRAKE SYSTEM ON THESE BUSES USES TWO HYDRAULIC PRESSURE SWITCHES TO OPERATE THE BRAKE LIGHTS AND THE BRAKE BOOSTER PUMP. THE BRAKE PRESSURE WARNING LIGHT CAN ACTIVATE WHEN ACTUAL SYSTEM FAILURE HAS NOT OCCURRED.
CONSEQUENCE
-
REMEDY
DEALERS WILL REPLACE THE TWO HYDRAULIC PRESSURE SWITCHES WITH ONE MECHANICAL SWITCH THAT IS ACTIVATED BY BRAKE PEDAL STROKE.
NOTES
SYSTEM: BRAKES; POWER ASSIST; HYDRAULIC SYSTEM.VEHICLE DESCRIPTION: SCHOOL AND TRANSIT BUSES BUILT WITH HYDRAULIC BRAKES.NOTE: IF THE VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLE TIME OR THE REMEDY DOES NOT CORRECT THE DEFECT, PLEASE CONTACT NAVISTAR AT 1-800-448-7825. ALSO, CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.
SUMMARY
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.
CONSEQUENCE
-
REMEDY
INSTALL A PRESSURE RELIEF VALVE IN THE AIR TANK.
NOTES
SYSTEM: SUSPENSION.VEHICLE DESCRIPTION: SCHOOL BUSES: MODELS 4700 AND 4900; HEAVY TRUCKS: MODELS3600, 3700, 3800, AND 3900FG; INCOMPLETE CHASSIS: MODEL 1652SC.
SUMMARY
THE FUEL TANK CAGE ASSEMBLY BOLTS MOUNTING THE VERTICAL STRAPS TO THE HORIZONTAL ANGLE WERE ASSEMBLED WITH THE THREADED END OF THE BOLTS FACING THE FUEL TANK.
CONSEQUENCE
-
REMEDY
THE FUEL TANK CAGE MOUNTING BOLTS WILL BE REMOVED AND REINSTALLED WITH THE BOLT HEAD TOWARD THE TANK.
NOTES
SYSTEM: FUEL SYSTEM; FUEL TANK ASSEMBLY; FMVSS 301.VEHICLE DESCRIPTION: SCHOOL BUS CHASSIS.
SUMMARY
THE POWER STEERING RETURN HOSE WAS INCORRECTLY ROUTED, AND COULD KINK AND REDUCE POWER STEERING ASSIST.
CONSEQUENCE
-
REMEDY
INSTALL A NEW, CORRECTLY ROUTED, POWER STEERING RETURN ASSEMBLY.
NOTES
SYSTEM: POWER STEERING.VEHICLE DESCRIPTION: SCHOOL BUS.
SUMMARY
THE FUEL SYSTEM FAILED THE CRASH BARRIER TEST.
CONSEQUENCE
-
REMEDY
MODIFY THE FUEL TANK CAGE TO COMPLY WITH FMVSS 301.
NOTES
SYSTEM: FUEL TANK ASSEMBLY; FMVSS 301.VEHICLE DESCRIPTION: SCHOOL BUSES WITH 35 GALLON OR 65 GALLON FUEL TANKS ANDFUEL TANK CAGE SYSTEMS.NOTE: IT IS IMPORTANT THAT ALL AFFECTED BUSES BE REMEDIED. HOWEVER, THE RECALLSHOULD NOT CAUSE PARENTS OR SCHOOL OFFICIALS TO BE UNDULY ALARMED. NHTSA ISUNAWARE OF ANY ACTUAL CRASHES IN WHICH THE FUEL SYSTEM OF A NAVISTAR CHASSISRUPTURED. MANY OF THE SCHOOL BUSES INVOLVED IN THE RECALL HAVE BEEN IN SERVICEFOR MORE THAN 12 YEARS, AND THERE HAS NOT BEEN A SINGLE RECORDED FATALITYBECAUSE OF A FIRE.
SUMMARY
A GAP BETWEEN THE MASTER CYLINDER AND REMOTE BRAKE FLUID RESERVOIR ADAPTER, CAUSED BY AN OUT-OF-SPECIFICATION CONDITION OF THE ADAPTER, RESULTS IN BRAKE FLUID LOSS DURING BRAKE APPLICATION.
CONSEQUENCE
-
REMEDY
REPLACE THE OUT-OF-SPECIFICATION ADAPTERS.
NOTES
SYSTEM: BRAKES; MASTER CYLINDER.EQUIPMENT DESCRIPTION: ALLIEDSIGNAL INC. BRAJE MASTER CYLINDERS SUPPLIED TOOEM'S OF SCHOOL BUS, MOTORHOME AND SHUTTLE BUS CHASSIS.NOTES: ALLIEDSIGNAL INC. INITIATED THIS CAMPAIGN.IF YOU HAVE PROBLEMS EXCHANGING THE FLUID RESERVOIR ADAPTERS YOU CAN OBTAINASSISTANCE BY FOLLOWING THE PROCEDURE DESCRIBED IN THE OWNER ASSISTANCE GUIDESECTION IN YOUR OWNER'S MANUAL. ALSO, CONTACT THE NATIONAL HIGHWAY TRAFFICSAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.
SUMMARY
THE PINCH BOLT CONNECTING THE UPPER STEERING COLUMN TO THE LOWER STEERING COLUMN MAY NOT HAVE BEEN PROPERLY TIGHTENED AND SEPARATION OF UPPER AND LOWER STEERING COLUMNS CAN OCCUR.
CONSEQUENCE
-
REMEDY
TIGHTEN THE UPPER PINCH BOLT AS REQUIRED.
NOTES
SYSTEM: STEERING.VEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH ADJUSTABLE STEERING COLUMNS.
