1978 FORD F SERIES Recalls (2)

Campaign:

79V077000 on 10/11/1979

Component:

Service brakes, air:antilock:control unit/module

Manufactured:

01/31/1975 - 02/28/1979

Affected:

65,000

Defect:

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.

Correction:

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.

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Campaign:

77V189000 on 10/11/1979

Component:

Tires:markings

Affected:

5,000

Defect:

The involved vehicles are equipped with safety compliance certification labels and incomplete vehicle documents that indicate that the gross axle weight rating (gawr) is approximately 0.6 to 6.0 percent greater than the combined load capacity of the tires at the specified tire inflation pressure. this fails to comply with federal motor vehicle safety standard nos. 120, "air brake systems", and 119, "new pneumatic tires for vehicles other than passenger cars", or 109, "new pneumatic tires".

Correction:

Owner will receive correct labels by mail, free of charge.

Notes:

Vehicle description: light trucks.system: equipment; certification label, tire markings.consequences of defect: loading vehicle to the rated capacity could lead totire failure, rapid loss of air, loss of vehicle control and an accident.

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