Mack · Canada · High
Mack FS, RL +2 more: Not Entered
Affects Mack FS, RL, FL, RS · 1972–1973 — about 11 vehicles.
The hazard
TRUCKS EQUIPPED WITH ROCKWELL INTERNATIONAL FF921 FRONT AXLES AND CAST ALUMINUM WHEEL HUBS. THERE IS A POSSIBILITY OF CRACKING IN THE AREA OF THE WHEEL MOUNMTING FLANGE AND/OR INNER BEARING BARREL SECTION ON CERTAIN ROCKWELL CAST ALUMINUM WHEELS (CASTING NO. 333-A-911). EITHER DEFECT CAN CAUSE THE WHEEL AND TIRE TO SEPARATE FROM THE VEHICLE CAUSING A 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