United States 00V224000
FREIGHTLINER LLC
The problem
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH ARVINMERITOR MFS-8 SERIES FRONT AXLE ASSEMBLIES. THE WHEEL BEARING NUT ADJUSTMENT ASSEMBLY MAY 1) RESTRICT A COMPLETE LUBRICATION FILL AT ASSEMBLY AND/OR 2) SHEAR THE SPINDLE PERFORATED WASHER'S LOCKING TAB (LOCATED IN THE INSIDE DIAMETER OF THE WASHER) WHEN TIGHTENED. IF THE WASHER TAB IS SHEARED, TIGHTENING OF THE OUTER SPINDLE NUT MAY CAUSE THE BEARINGS TO BE EXCESSIVELY PRELOADED RATHER THAN THE INTENDED .001" - .005" END PLAY. EITHER OF THESE CONDITIONS MAY CAUSE PREMATURE WHEEL BEARING FAILURE.
Risk
A PREMATURE WHEEL BEARING FAILURE COULD RESULT IN SEPARATION OF THE WHEEL ASSEMBLY FROM THE VEHICLE AND RESULT IN LOSS OF VEHICLE CONTROL.
What owners should do
DEALERS WILL REMOVE AND REPLACE THE FRONT AXLE SPINDLE NUTS AND WASHERS WITH A REDESIGNED SYSTEM.
Units 450