1978 FLXIBLE FLXIBLE Recalls (2)

Campaign:

78V137000 on 10/11/1979

Component:

Parking brake:driveline

Manufactured:

07/31/1974 - 08/31/1977

Affected:

1,179

Defect:

The parking brake drum, if subjected to abnormal heating as a result of operating the coach with the parking brake applied or only partially released, may become cracked. the weakened brake drum then becomes subject to failure.

Correction:

The brake drum will be inspected and, if necessary, will be replaced with an improved brake drum.

Notes:

Vehicle description: transit buses equipped with propeller shaft brake systems.system: parking brakes; brake, drum.consequences of defect: if failure occurs during prop shaft rotation, the drumwill disintegrate, propelling drum fragments at high speeds and possiblyresulting in passenger injury and property damage.

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Campaign:

79V182000 on 10/11/1979

Component:

Parking brake:driveline

Manufactured:

09/30/1977 - 04/30/1978

Affected:

368

Defect:

Parking brakes on the involved vehicles may not release or release completely. this could lead to abnormal heating of the rockwell parking brake drum during vehicle operation. this may cause burning or thermal cracking of the drum surface. the weakened drum then becomes subject to failure under the centrifugal forces of the propshaft rotation which pull the drum outwards when it is rotating rapidly around the propshaft center.

Correction:

The dealer will replace the existing brake drum with rockwell part #3219-h-4350, without charge to owner.

Notes:

Vehicle description: buses.system: service brakes; parking brake, drum.consequences of defect: if such a failure occurs when the propshaft isoperating, the drum can disintegrate with an explosive force. this could causeloss of vehicle control and an accident.

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