The problem
On certain vehicles, the knob that operates the tractor park valve may break off, rendering the valve inoperable.
The fix
Defective knobs will be replaced with an improved type, without charge to owner.
Contacts
Vehicle description: trucks.System: service brakes; tractor park valve control knob.Consequences of defect: the purpose of the tractor park valve is to allow thedriver to apply the tractor spring emergency/parking brake independently of thetrailer emergency parking brakes. If the knob is broken, the tractor parkingbrakes cannot be applied. If parked on an incline and left unattended, vehiclecould roll free and cause accident and injury.
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 80V052000.
- 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.