16Affected configurations shown850Potential units affected—Latest completion context
What can happen
Safety consequence
THE POSSIBILITY EXISTS THAT THE ALUMINUM ENGINE REAR SUPPORT BRACKETS MAY FAIL DUE TO METAL FATIGUE. THIS TYPE OF FAILURE WOULD ALLOW THE ENGINE AND TRANSMISSION ASSEMBLY TO DISLOCATE DOWNWARD. THIS WILL RESULT IN THROTTLE CONTROL LOSS WITH THE ENGINE OPERATING CONTINUOUSLY IN THE MID TO UPPER RANGE OF THE GOVERNED SPEED RANGE.
What fixes it
Official remedy
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALUMINUM SUPPORT BRACKETS WITH BRACKETS MADE FROM DUCTILE IRON FOR INCREASED STRENGTH.
Recall lifecycle
Repair completion history
Campaign-level completion reporting. This does not determine whether a particular VIN has been repaired.
Latest reported completion: available in the live DOT record.
Affected vehicles
Vehicle configurations connected to 78V170000
1978 MACK WLOpen vehicle record →1978 MACK WSOpen vehicle record →1978 MACK RWSOpen vehicle record →1978 MACK RWLOpen vehicle record →1977 MACK RWSOpen vehicle record →1977 MACK RWLOpen vehicle record →1977 MACK WSOpen vehicle record →1977 MACK WLOpen vehicle record →1976 MACK RWLOpen vehicle record →1976 MACK RWSOpen vehicle record →1976 MACK WSOpen vehicle record →1976 MACK WLOpen vehicle record →1975 MACK RWSOpen vehicle record →1975 MACK RWLOpen vehicle record →1975 MACK WSOpen vehicle record →1975 MACK WLOpen vehicle record →
Owner action
Campaign pages describe the public recall record. To determine whether your specific vehicle has an unrepaired recall, use your VIN and verify the current status through NHTSA.