| NHTSA Campaign Number: |
79V077000 |
| Vehicle/Equipment Make: |
FORD |
| Vehicle/Equipment Model: |
F SERIES |
| Model Year: |
1978 |
| Manufacturer Campaign Number: |
|
| Manufacturer Component Description: |
SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE |
| Manufacturers Involved in Recall: |
FORD MOTOR COMPANY |
| Manufacturered: |
19750201 - 19790301 |
| Type of Report: |
V (Vehicle, Equipment or Tire) |
| Potential Number of Units Affected: |
65000 |
| Date Owner Notified By Manufacturer: |
19791109 |
| Recall Initiated By: |
19791109 |
| Manufacturer Responsible For Recall: |
FORD MOTOR COMPANY |
| Report Received Date: |
19790329 |
| Record Creation Date: |
19791012 |
| Regulation Part Number: |
|
| Federal Motor Vehicle Safety Standard Number: |
|
| Defect Summary: |
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. |
| Consequence Summary: |
|
| Corrective Summary: |
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. |