Recalls for 1999 Navistar 4800

DEFECT #1 - SERVICE BRAKES, AIR

Posted on: 2000-01-10
Description
Vehicle description: heavy duty trucks.  There is interference between the air brake s-cam and the end of one of the knuckle studs.  As the brake shoe lining wears, the s-cam rotation may be limited by the interfering knuckle stud.  If the s-cam can not rotate through its full range of motion, the braking force can not be fully transmitted from the brake shoe linings to the brake drums.

Consequence
This could result in a longer stopping distance or a dragging brake condition.

Corrective Action
Dealers will shorten the interfering knuckle stud to eliminate the clearance problem.

Notes
International recall 99513.owner notification began december 27, 1999.  Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact navistar at 1-800-448-7825.  Also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).

DEFECT #2 - SERVICE BRAKES, AIR

Posted on: 1999-03-23
Description
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.

Corrective Action
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.

Notes
Owner notification began march 22, 1999.owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact navistar at 1-800-448-7825.  Also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).