Auto Recalls for Consumers

1977 FORD F SERIES Recall - Campaign #79V077000

 
Auto Recalls For Consumers

1977 FORD F SERIES RECALL - #79V077000

RECALL FOR SERVICE BRAKES, AIR : ANTILOCK : CONTROL UNIT/MODULE

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.

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Information provided by the National Highway Traffic Safety Administration.
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Recall Details
Vehicle 1977 FORD F SERIES
Manufacturer FORD MOTOR COMPANY
Manufactured between 2/1/1975 - 3/1/1979
Recalled on 10/12/1979
Influenced by FORD MOTOR COMPANY
Owners Notified on 11/9/1979
# Affected 65,000
Recalled for SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
 
Description 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.
Consequences
Corrective action 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.
Notes VEHICLE DESCRIPTION: HEAVY TRUCKS EQUIPPED WITH ANTI-LOCK AIR BRAKECONTROLLERS.SYSTEM: SERVICE BRAKES; CONTROL ASSEMBLY.
See also 1977 FORD F SERIES Recall for ENGINE AND ENGINE COOLING, COOLING SYSTEM, FAN
Technical Service Bulletins





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