Mack · Canada · High
Mack MB, R +2 more: Not Entered
Affects Mack MB, R, F, U · 1971–1974 — about 19 vehicles.
The hazard
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.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational