1993 International Harvester 4900 Recalls

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NHTSA Campaign Number: 93V092000
Manufacturer: INTERNATIONAL TRUCK & ENGINE CORPORATION
Manufactured Begin Date: January 1st, 1990
Manufactured End Date: March 1st, 1993
Date of Owner Notification: June 1st, 1993

Defect 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 Summary:
LACK 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.

Corrective Summary:
INSTALL A PRESSURE RELIEF VALVE IN THE AIR TANK.

Recall Notes:
SYSTEM: SUSPENSION.VEHICLE DESCRIPTION: SCHOOL BUSES: MODELS 4700 AND 4900; HEAVY TRUCKS: MODELS3600, 3700, 3800, AND 3900FG; INCOMPLETE CHASSIS: MODEL 1652SC.

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NHTSA Campaign Number: 93V040000
Manufacturer: INTERNATIONAL TRUCK & ENGINE CORPORATION
Manufactured Begin Date: January 1st, 1989
Manufactured End Date: September 1st, 1992
Date of Owner Notification: April 6th, 1993

Defect Summary:
THE TIE ROD USED ON THE DANA FA-64 FRONT DRIVE AXLE HAS A THREADED SLEEVE TO PERMIT TOE-IN ADJUSTMENT WITHOUT REMOVING AN END. THE TIE ROD BAR IS NECKED DOWN TO INCORPORATE THE SLEEVE. A STRESS RISER IS CREATED AT THE THREADED PORTION OF THE ADJUSTMENT SLEEVE WHICH MAY CAUSE A FATIGUE FRACTURE AND FAILURE OF THE TIE ROD WHERE IT SCREWS INTO THE SLEEVE.

Consequence Summary:
FAILURE OF THE TIE ROD ON THE FRONT AXLE RESULTS IN LOSSOF STEERING CONTROL AND A POSSIBLE VEHICLE CRASH.

Corrective Summary:
REPLACE THE TIE ROD WITH A TIE ROD THAT DOES NOT USE AN ADJUSTMENT SLEEVE.

Recall Notes:
SYSTEM: STEERING.VEHICLE DESCRIPTION: MEDIUM-WEIGHT TRUCKS EQUIPPED WITH DANA FA-64 FRONT DRIVEAXLES.