Navistar 4700 recalls by model year

Reported: 1997-05-28 (May 28, 1997) · Model years: 1991, 1992, 1993, 1994, 1995, 1996

VEHICLE DESCRIPTION: MEDIUM AND HEAVY DUTY TRUCKS, SCHOOL AND TRANSIT BUSES BUILT WITH A BENDIX 9X3 POWER APPLY PARK BRAKE SYSTEM. THE CAM LEVER OF THE POWERED APPLY BRAKE CAN MOVE FORWARD, BECAUSE A HOLE IN THE TRANSMISSION MOUNTING BOSS WAS DRILLED TOO DEEP.

Consequence: THIS CAN ALLOW THE CAM LEVER TO BECOME DISENGAGED FROM THE PARKING BRAKE SHOES. THE OPERATOR WOULD HAVE NO WARNING THAT THE PARKING BRAKE WAS NOT APPLIED ALLOWING THE VEHICLE TO MOVE UNEXPECTEDLY.

Remedy: DEALERS WILL INSTALL SHIMS IN THE DRILLED AREA OF THE AUTOMATIC TRANSMISSION PARK BRAKE PIVOT PIN HOLE.

Reported: 1998-05-27 (May 27, 1998) · Model years: 1994, 1995, 1996, 1997

VEHICLE DESCRIPTION: TRUCKS, SCHOOL BUSES AND TRANSIT BUSES EQUIPPED WITH AN OPTIONAL AUTOMATIC TRANSMISSION SHIFT LEVER THAT INCLUDES A PARK BRAKE POSITION. THE TRANSMISSION SHIFTER/PARK BRAKE LEVER CAN BIND BEFORE FULLY ENGAGING IN THE PARK BRAKE POSITION CAUSING A FALSE PARK CONDITION.

Consequence: THE VEHICLE CAN MOVE AFTER BEING PLACED IN PARK INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL INSTALL A SPACER PLATE IN THE SHIFTER AND INSPECT FOR THE PRESENCE OF AN "E" CLIP THAT DETAINS THE DETENT PIN.

Reported: 1999-02-16 (February 16, 1999) · Model years: 1996, 1997, 1998

SCHOOL, TRANSIT, OR HEAVY DUTY VEHICLES EQUIPPED WITH SPICER 6,000 OR 8,000 LB. FRONT STEER AXLES. THE TIE ROD END CAN PULL OUTBOARD AND SEPARATE FROM THE TIE ROD TUBE DUE TO IMPROPER THREAD ENGAGEMENT BETWEEN THE MALE TIE ROD END AND THE FEMALE TUBE.

Consequence: SEPARATION OF THE TIE ROD END COULD RESULT IN LOSS OF STEERING CONTROL, INCREASING THE RISK OF A VEHICLE CRASH.

Remedy: DEALERS WILL REPLACE THE COMPLETE TIE ROD ASSEMBLY.

Reported: 1997-09-08 (September 8, 1997) · Model years: 1997

VEHICLE DESCRIPTION: BUSES AND HEAVY TRUCK CHASSIS EQUIPPED WITH T444E ENGINES. THE ACCELERATOR PEDAL ROD MATERIAL IS EXCESSIVELY BRITTLE AND CAN BREAK DURING A FULL THROTTLE APPLICATION.

Consequence: THE UNEXPECTED BREAKAGE CAN RESULT IN THE INABILITY TO ACCELERATE THE VEHICLE PROPERLY INCREASING THE RISK OF A VEHICLE CRASH.

Remedy: DEALERS WILL REPLACE THE ELECTRONIC ACCELERATOR PEDAL RODS WITH NEW RODS.

Reported: 1998-11-09 (November 9, 1998) · Model years: 1997, 1998

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH T444E DIESEL ENGINES. A FUEL LEAK CAN OCCUR BECAUSE OF OVERCRIMPING OF THE HOSE END FITTINGS ON THE HOSE FROM THE REGULATOR TO THE LEFT HEAD AND THE HOSE FROM THE FUEL TRANSFER PUMP TO THE REGULATOR.

Consequence: FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, CAN RESULT IN A FIRE.

Remedy: DEALERS WILL INSPECT THE OIL HOSE AND PLACE AN ADDITIONAL CONVOLUTED LOOM AROUND THE EXISTING OIL HOSE, OR REPLACE THE HOSE ASSEMBLY.

Reported: 1998-09-17 (September 17, 1998) · Model years: 1998, 1999

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH A 1710 DRIVE LINE AND A 12 X 4 HYDRAULIC PARKING BRAKE. IF THE BRAKE DRUM OR TRANSMISSION YOKE ARE NOT FULLY SEATED WHEN THE EIGHT BOLTS ARE INSTALLED CONNECTING THE 3-PIECE JOINT, THE BOLTS CAN LOOSEN.

Consequence: BOLTS WILL EVENTUALLY WORK OUT OR SHEAR RESULTING IN DRUM AND DRIVE SHAFT SEPARATION.

Remedy: DEALERS WILL INSPECT THE TORQUE OF THESE BOLTS AND RE-TORQUE TO SPECIFICATION.

Reported: 1998-11-09 (November 9, 1998) · Model years: 1998, 1999

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH A T444E DIESEL ENGINE. THE HIGH PRESSURE OILLINE FOR THE FUEL INJECTION SYSTEM THAT GOES FROM THE HIGH PRESSURE OIL PUMP TO THE RIGHT CYLINDER HEAD CAN CHAFE AGAINST THE CHARGE AIR COOLER CROSSOVER PIPE.

Consequence: IF THIS CONDITION OCCURS, THE HOSE WILL FAIL, RESULTING IN A SUDDEN LOSS OF OIL, CAUSING THE ENGINE TO HAVE A SUDDEN LOSS OF POWER.

Remedy: DEALERS WILL INSPECT THE HOSES AND IF THE HOSE IS NOT DAMAGED A CONVOLUTED HOSE WILL BE PLACED OVER THE CURRENT HOSE. IF THE HOSE IS DAMAGED, IT WILL BE REPLACED ALONG WITH THE CONVOLUTED HOSE.

Reported: 1999-03-15 (March 15, 1999) · Model years: 1998, 1999

VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCK CHASSIS EQUIPPED WITH 16,000 LB., 18,000 LB., OR 20,000 LB. HEAVY DUTY STEERING AXLES. THE INNER WHEEL BEARING CONE FOR THE STEERING AXLE WHEEL HUB ASSEMBLY DOES NOT PROPERLY FIT ONTO THE NAVISTAR STEERING AXLE SPINDLE ASSEMBLY. IMPROPER FIT OF THE BEARING TO THE SPINDLE INCREASES THE STRESS LEVELS TO THE STEERING AXLE SPINDLE WHICH COULD CAUSE SPINDLE FAILURE.

Consequence: IF THE SPINDLE FAILS, A LOSS OF DRIVER CONTROL COULD OCCUR, INCREASING THE RISK OF A VEHICLE CRASH.

Remedy: DEALERS WILL REMOVE THE LEFT AND RIGHT HUB/DRUM ASSEMBLIES FROM THE STEERING AXLES AND REPLACE THE INNER WHEEL BEARING CONES AND CUPS.

Reported: 1999-03-16 (March 16, 1999) · Model years: 1999

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

Consequence: WITHOUT SUFFICIENT TORQUE ON THE GUIDE PAWL CAP SCREW, THE BRAKES COULD GRADUALLY LOSE ADJUSTMENT, INCREASING THE VEHICLE STOPPING DISTANCE.

Remedy: DEALERS WILL CHECK THE TORQUE ON THE AUTOMATIC SLACK ADJUSTER GUIDE PAWL. IF THERE IS NO TORQUE, THE BRAKES WILL BE ADJUSTED AND THE GUIDE PAWL WILL BE TIGHTENED TO 15-20 FT. LBS.

Reported: 1999-09-21 (September 21, 1999) · Model years: 1999

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH REAR LEAF SPRING SUSPENSIONS (MODELS 4700 BUILT WITH REAR LEAF SUSPENSIONS AND MANUFACTURED FROM DECEMBER 9, THROUGH DECEMBER 16, 1998; MODELS 3400 AND 3800 BUILT WITH 14SBK REAR LEAF SPRING SUSPENSIONS AND BUILT APRIL 14 THROUGH MAY 10, 1999; AND MODELS 3400 AND 3800 BUILT WITH REAR LEAF SPRING SUSPENSIONS AND MANUFACTURED FROM MAY 10 THROUGH MAY 18, 1999). ON VEHICLES WHERE THE FRAME TO AXLE HOSE LENGTH WAS TOO LONG, A CHAFING CONDITION EXISTS ON SUSPENSION COMPONENTS, WHICH COULD RESULT IN HOSE RUPTURE. ON VEHICLES WHERE THE HOSES ARE TOO SHORT, A HOSE SEPARATION COULD OCCUR WITH SEVERE SUSPENSION ARTICULATION.

Consequence: IF A HOSE RUPTURES, THE REAR BRAKES WILL FAIL INCREASING THE RISK OF A VEHICLE CRASH.

Remedy: SHORT HOSES WILL BE REPLACED AND THE LONG HOSES WILL HAVE A HOSE ROUTING KIT INSTALLED TO PREVENT ANY CHAFING PROBLEMS.