Mack · Canada · High
Mack RWS, RWL: Not Entered
Affects Mack RWS, RWL · 1977–1979 — about 273 vehicles.
The hazard
TWO SET SCREWS THAT ARE PART OF THE UPPER STEERING SHAFT BEARING ASSEMBLY LOCATED AT THE CAB DASH SHEET MAY NOT HAVE BEEN ADEQUATELY TIGHTENED AND MAY ALLOW UPPER STEERING SHAFT MOVEMENT. THIS CONDITION CAN RESULT IN INADEQUATE ENGAGEMENT IN THE SPLINES OF THE LOWER STEERING SHAFT. DURING FRONT AXLE ARTICULATION, THE LOWER STEERING SHAFT CAN DISENGAGE RESULTING IN A LOSS OF STEERING CONTROL WITHOUT PRIOR WARNING.
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