The problem
The front wheel aluminum hubs on the involved vehicles may be subject to cracks which may progress circumferentially around the barrel of the hub. This could lead to a fracture in the "barrel" position of the hub and complete hub failure.
The fix
Dealer will install steel hubs in place of aluminum hubs without charge to owner.
Contacts
Vehicle description: trucks equipped with ff-931 front axles.System: wheels; aluminum hubs, front.Consequences of defect: hub failure could result in loss of vehicle control andan accident.Note: hub failure may be indicated by an audible sound at the instant of hubseparation, along with thumping or wheel wobble. Hub may separate from thewheel and still be retained on the axle.
What to do
- Check your VIN. Enter it at nhtsa.gov/recalls - it shows whether this recall applies to your vehicle and whether the repair has been done.
- Call a dealer. Any authorized Mack dealer will do the repair free, whether or not you bought the vehicle there. Quote campaign 77V149000.
- Ask about parts and a loaner. If parts aren't available yet, ask what to do in the meantime.
- Keep your paperwork. If you paid for this repair before the recall, you may be able to get reimbursed - here's how.