United States 86V005000
Mack Trucks, Inc.
The problem
INCORRECT INNER WHEEL BEARINGS WERE INSTALLED IN THE REAR AXLES WHICH WEARS A GROOVE IN THE SPINDLE DUE TO A POOR FIT. CONSEQUENCE OF DEFECT: A DEEP GROOVE COULD CAUSE THE AXLE HOUSING TO BREAK AND RESULT IN A VEHICLE CRASH WITHOUT PRIOR WARNING.
What owners should do
REPLACE INNER WHEEL BEARING WITH CORRECT BEARING. ALSO, IF A GROOVE IS PRESENT, REMOVE THE GROOVE AND ASSURE THAT NO CRACKS ARE PRESENT. REPLACE HOUSING IF CRACKED.
Units 484