1976 MACK MB Recalls (2)

Campaign:

78V068000 on 10/11/1979

Component:

Service brakes, air:antilock:control unit/module

Manufactured:

09/30/1974 - 02/29/1976

Affected:

9,700

Defect:

An axle "no brake" condition could result from an eaton controller internal electrical malfunction. this condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. as a result, the anti-wheel lock warning lamp is not activated.

Correction:

The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.

Notes:

Vehicle description: trucks equipped with eaton 21 anti-lock controllers.system: service brakes; anti-wheel lock solenoid.consequences of defect: loss of brakes on any one axle will result in extendedvehicle stopping distances, which could lead to a vehicle accident.

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Campaign:

78V172000 on 10/11/1979

Component:

Steering:linkages:knuckle:spindle:arm

Affected:

13,800

Defect:

The existing cross steering arms may have insufficient fatigue life in the neck area. this is near the boss for the cross steering tube ball joint connection. failure of either of the cross steering levers could lead to loss of steering control of the right front wheel.

Correction:

The dealer will inspect and, if necessary, install cross steering arms of improved design and greater strength.

Notes:

Vehicle description: truck tractors.system: steering; steering arm.consequences of defect: loss of steering control could lead to loss of vehiclecontrol and an accident.

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