16Affected configurations shown2,100Potential units affected—Latest completion context
What can happen
Safety consequence
DEFICIENCIES, IN THE FORM OF FORGING LAPS, CRACKS AND EXCESSIVE DECARBURIZATION DURING HEAT TREATMENT, EXIST IN THE STEERING KNUCKLES. STRESSES IMPOSED WITH INTEGRAL HYDRAULIC POWER STEERING MAY LEAD TO A FAILURE IN THE AREA OF THE STEERING ARM ATTACHING BOSS. THIS TYPE OF FAILURE WOULD CAUSE LOSS OF STEERING CONTROL.
What fixes it
Official remedy
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE LEFT STEERING KNUCKLE WITH AN IMPROVED TYPE OF KNUCKLE.
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 78V171000
1974 MACK ROpen vehicle record →1974 MACK UOpen vehicle record →1974 MACK FOpen vehicle record →1974 MACK MBOpen vehicle record →1973 MACK ROpen vehicle record →1973 MACK UOpen vehicle record →1973 MACK FOpen vehicle record →1973 MACK MBOpen vehicle record →1972 MACK ROpen vehicle record →1972 MACK FOpen vehicle record →1972 MACK MBOpen vehicle record →1972 MACK UOpen vehicle record →1971 MACK FOpen vehicle record →1971 MACK ROpen vehicle record →1971 MACK MBOpen vehicle record →1971 MACK UOpen 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.