The issue
VEHICLES E3QUIPPED WITH MACK FA534 SERIES FRONT STEERING AXLES AND INTEGRAL HYDRAULIC POWER STEERING. THE STEERING KNUCKLES MAY HAVE A REDUCED FATIGUE LIFE AS A RESULT OF IMPROPER HEAT TREATMENT. A FAILURE OF A STEERING KNUCKLE WOULD RESULT IN A LOSS OF STEERING CONTROL WITHOUT PRIOR WARNING TO THE OPERATOR.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Mack F | 1971, 1972, 1973, 1974 |
| Mack MB | 1971, 1972, 1973, 1974 |
| Mack R | 1971, 1972, 1973, 1974 |
| Mack U | 1971, 1972, 1973, 1974 |