Antilock: control unit/moduleRecall 79V-077 · Ford vehicles
FORD MOTOR COMPANY recall 79V-077 covers 65,000 Ford vehicles for a antilock: control unit/module problem, reported to NHTSA on March 29, 1979.
Source: NHTSA recall 79V077000 and manufacturer quarterly reports. Started by the manufacturer.
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.
VEHICLE DESCRIPTION: HEAVY TRUCKS EQUIPPED WITH ANTI-LOCK AIR BRAKECONTROLLERS.SYSTEM: SERVICE BRAKES; CONTROL ASSEMBLY.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
Vehicles in this recall
Built from February 1, 1975 to March 1, 1979. Not every vehicle in these model years is included; check by VIN.