NHTSA Campaign Id 74V147000; Date: Sep. 5, 1974
1973 Ford M450; 1974 Ford M450; 1973 Ford M500; 1974 Ford M500
Component: Service Brakes, Hydraulic:pedals And Linkages
Manufactured by: Ford Motor Company
Affected Units:: 3,953
Ford campaign no 132. Motor home chassis. Possibility that an external assistspring attached to the pedal to aid the master cylinder internal return springto overcome the weight of the heavy pedal, may exert excess force on the clipthat retain the master cylinder push rod to the primary piston in the mastercylinder, causing it to break in to small pieces. If fragments of the clipbecome lodged within the cylinder bore they could cause gradual lockup of thebrakes. (correct by inspecting and replacing master cylinder units wherenecessary).
Date Owners notified by Manufacturer: Sep 19, 1974
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