The problem
Certain air brake anti-lock modulators could malfunction during operation of the anti-lock system. A nylon piston within the modulator air valve system can swell from exposure to system contaminants. Continued exposure may cause the piston to swell to the extent that interference with the cylinder wall will result, causing momentary sticking or a permanent jam. This can result in temporary or permanent loss of braking for the affected axle.
The fix
The pistons in the valve portion of the modulators will be replaced with pistons that do not swell when exposed to air brake system contaminants.
Contacts
Vehicle description: heavy trucks equipped with anti-lock air brakecontrollers.System: service brakes; control assembly.
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 Ford dealer will do the repair free, whether or not you bought the vehicle there. Quote campaign 79V077000.
- 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.