NHTSA Recall 79V077000
NHTSA Campaign Id 79V077000; Date: Mar. 29, 1979
Recalled Vehicles:
1975 Ford B Series; 1976 Ford B Series; 1977 Ford B Series; 1978 Ford B Series; 1979 Ford B Series; 1975 Ford C Series; 1976 Ford C Series; 1977 Ford C Series; 1978 Ford C Series; 1979 Ford C Series; 1975 Ford Cl Series; 1976 Ford Cl Series; 1977 Ford Cl Series; 1978 Ford Cl Series; 1979 Ford Cl Series; 1975 Ford F Series; 1976 Ford F Series; 1977 Ford F Series; 1978 Ford F Series; 1979 Ford F Series; 1975 Ford L Series; 1976 Ford L Series; 1977 Ford L Series; 1978 Ford L Series; 1979 Ford L Series; 1975 Ford W Series; 1976 Ford W Series; 1977 Ford W Series; 1978 Ford W Series; 1979 Ford W Series
Component: Service Brakes, Air:antilock:control Unit/module
Manufactured by: Ford Motor Company
Affected Units:: 65,000
Recall 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.
How to 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.
Recall Notes:
Vehicle description: heavy trucks equipped with anti-lock air brakecontrollers. System: service brakes; control assembly.
Date Owners notified by Manufacturer: Nov 9, 1979
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