Mack RM, HMM +1 more: Not Entered

Affects Mack RM, HMM, DMM · 1976 — about 38 vehicles.

The hazard

VEHICLES ARE EQUIPPED WITH ROCKWELL INTERNATIONAL FDS 1807 OR 1808 FRONT DRIVE AXLES AND ROCKWELL MALLEABLE IRON WHEEL HUBS. (PART NO. 333-R-2382) A DESIGN DEFICIENCY EXISTS IN THE BARREL OF THE HUB WHICH MAY ALLOW THE INNER BEARING CUP TO SPIN AND CRACK. THIS COULD LEAD TO HUB FAILURE AND EVENTUAL DISENGAGEMENT OF THE HUB, WHEEL AND TIRE FROM THE VEHICLE WITH RESULTANT LOSS OF VEHICLE CONTROL.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational