VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH DESIGN LEVEL 1, ROCKWELL FF980 SERIES FRONT AXLE. THE FRONT AXLE HUB FLANGE CAN DEVELOP CRACKS DUE TO HIGH STRESS LEVELS.
CRACKS IN A HUB FLANGE CAN RESULT IN A WHEEL SEPARATION.
DEALERS WILL REMOVE AND REPLACE THE FRONT HUBS WITH AN IMPROVED DESIGN LEVEL 2 HUB.
OWNER NOTIFICATION BEGAN MARCH 3, 1998.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 MACK AT 1-610-709-3011.ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.