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KENWORTH KENWORTH

  • KENWORTH KENWORTH 1999

    VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH 15 (WIDTHS: 4 AND 5) AIR-ACTUATED Q-PLUS CAM BRAKE EQUIPPED WITH FEDERAL MOGUL FRICTION PRODUCTS 3030-197 BRAKE LINING (MERITOR R201) BRAKE LININGS AND ACTUATED WITH TYPE 20 AIR CHAMBERS X 5.5 SLACK ADJUSTERS. THE AFFECTED BRAKES WERE INSTALLED PREDOMINANTLY IN HEAVY TRUCK FRONT AXLE ASSEMBLIES. THESE ASSEMBLIES DO NOT FULLY SATISFY THE TEST PERFORMANCE REQUIREMENTS OF FMVSS NO. 121, AIR BRAKE SYSTEMS.

  • KENWORTH KENWORTH 1999

    VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH MERITOR AIR BRAKE AUTOMATIC SLACK ADJUSTERS. SOME OF THE AUTOMATIC SLACK ADJUSTERS HAD INSUFFICIENT TORQUE APPLIED TO THE GUIDE PAWL CAP SCREW.

  • KENWORTH KENWORTH 1995

    DURING ASSEMBLY, THE TIE ROD END NUTS WERE NOT PROPERLY TORQUED. EXTREMELY LOW TORQUE CAN ALLOW MOVEMENT BETWEEN THE BALL STUD AND THE TIE ROD ARM CAUSING DAMAGE.

  • KENWORTH KENWORTH 1995

    AIR SYSTEM BLOCKAGE IN THE AIR DRYER OCCURS DEGRADING THE MOISTURE REMOVING CAPABILITIES OF THE DRYER WHEN THE VEHICLE IS OPERATED IN A COLD ENVIRONMENT AND MOISTURE ACCUMULATES AND FREEZES IN THE AIR DRYER OR IN THE LINE BETWEEN THE DRYER AND THE AIR SYSTEM RESERVOIR. THE AIR DRYER CAN BECOME OVER PRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.

  • KENWORTH KENWORTH 1993

    AIR SYSTEM BLOCKAGE IN THE AIR DRYER OCCURS DEGRADING THE MOISTURE REMOVING CAPABILITIES OF THE DRYER WHEN THE VEHICLE IS OPERATED IN A COLD ENVIRONMENT AND MOISTURE ACCUMULATES AND FREEZES IN THE AIR DRYER OR IN THE LINE BETWEEN THE DRYER AND THE AIR SYSTEM RESERVOIR. THE AIR DRYER CAN BECOME OVER PRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.

  • KENWORTH KENWORTH 1994

    AIR SYSTEM BLOCKAGE IN THE AIR DRYER OCCURS DEGRADING THE MOISTURE REMOVING CAPABILITIES OF THE DRYER WHEN THE VEHICLE IS OPERATED IN A COLD ENVIRONMENT AND MOISTURE ACCUMULATES AND FREEZES IN THE AIR DRYER OR IN THE LINE BETWEEN THE DRYER AND THE AIR SYSTEM RESERVOIR. THE AIR DRYER CAN BECOME OVER PRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.

  • KENWORTH KENWORTH 1993

    AN INCORRECT TOOL WAS USED TO INSTALL PITMAN ARM PINCH BOLTS, RESULTING IN INADEQUATE TORQUE ON THE PITMAN ARM PINCH BOLTS.

  • KENWORTH KENWORTH 1992

    THE WHEEL MOUNTING STUDS ON IRON FRONT AND REAR HUBS CAN FRACTURE.

  • KENWORTH KENWORTH 1992

    A CRACK IN THE DIE CAST ALUMINUM HOUSING OF THE BRAKE CHAMBER CAUSES A LOSS OF AIR PRESSURE IN THE CHAMBER. LOSS OF AIR PRESSURE CAUSES THE SPRING BRAKES TO BE APPLIED.

  • KENWORTH KENWORTH 1991

    TRW SUPPLIED POWER STEERING GEARS WITH NON-HEAT-TREATED WORM SCREWS. THE STEERING GEARS WITHOUT HEAT TREATED WORM SCREWS CAN LOCK UP IN TIGHT TURNING MANEUVERS.

  • KENWORTH KENWORTH 1990

    TRW SUPPLIED POWER STEERING GEARS WITH NON-HEAT-TREATED WORM SCREWS. THE STEERING GEARS WITHOUT HEAT TREATED WORM SCREWS CAN LOCK UP IN TIGHT TURNING MANEUVERS.

  • KENWORTH KENWORTH 1989

    AN INCORRECT PINCH BOLT WAS USED IN THE STEERING GEAR PITMAN ARM THAT DOES NOT ALLOW PROPER CLAMPING FORCE ON THE ARM SPLINE.

  • KENWORTH KENWORTH 1988

    AN INCORRECT PINCH BOLT WAS USED IN THE STEERING GEAR PITMAN ARM THAT DOES NOT ALLOW PROPER CLAMPING FORCE ON THE ARM SPLINE.

  • KENWORTH KENWORTH 1985

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1984

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1983

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1989

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1988

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1987

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1986

    FUEL LINE ROUTING COULD ALLOW THE LINE TO CONTACT THE ELECTRICAL CONNECTION ON THE STARTER SOLENOID.

  • KENWORTH KENWORTH 1988

    BOLTS MAY BE MISSING FROM THE UPPER MOUNTING BRACKET OF THE 3 POINT SEAT BELT.

  • KENWORTH KENWORTH 1988

    AN INCORRECT FRONT AXLE BRAKE VALVE MAY HAVE BEEN INSTALLED.

  • KENWORTH KENWORTH 1987

    AN INCORRECT FRONT AXLE BRAKE VALVE MAY HAVE BEEN INSTALLED.

  • KENWORTH KENWORTH 1988

    STEERING DRAGLINK NUTS MAY NOT BE PROPERLY TORQUED.

  • KENWORTH KENWORTH 1987

    THE MALLEABLE IRON REAR HUBS MAY EXHIBIT CRACKS. ALSO, THE FRONT AXLE HUBS MAY HAVE NOT BEEN PROPERLY HEAT TREATED.

  • KENWORTH KENWORTH 1981

    ON CERTAIN VEHICLES, THE AIR STARTER VALVES MAY BECOME INTERNALLY DAMAGED DURING NORMAL OPERATION. THIS MAY RESULT IN A MALFUNCTION OF THE VALVE, CAUSING THE AIR STARTER TO SELF ACTUATE AND START THE ENGINE OF AN UNATTENDED VEHICLE.

  • KENWORTH KENWORTH 1980

    ON CERTAIN VEHICLES, THE AIR STARTER VALVES MAY BECOME INTERNALLY DAMAGED DURING NORMAL OPERATION. THIS MAY RESULT IN A MALFUNCTION OF THE VALVE, CAUSING THE AIR STARTER TO SELF ACTUATE AND START THE ENGINE OF AN UNATTENDED VEHICLE.

  • KENWORTH KENWORTH 1982

    IT MAY BE POSSIBLE FOR THE LCF THROTTLE ROD BELL CRANK TO MAKE CONTACT WITH THE RADIATOR SEAL. THIS CAN RESULT IN REDUCED ENGINE PERFORMANCE AND/OR THROTTLE RETURN.

  • KENWORTH KENWORTH 1981

    IT MAY BE POSSIBLE FOR THE LCF THROTTLE ROD BELL CRANK TO MAKE CONTACT WITH THE RADIATOR SEAL. THIS CAN RESULT IN REDUCED ENGINE PERFORMANCE AND/OR THROTTLE RETURN.

  • KENWORTH KENWORTH 1980

    IT MAY BE POSSIBLE FOR THE LCF THROTTLE ROD BELL CRANK TO MAKE CONTACT WITH THE RADIATOR SEAL. THIS CAN RESULT IN REDUCED ENGINE PERFORMANCE AND/OR THROTTLE RETURN.