Mack · Canada · Mod
Mack MR, MC +2 more: Steering
Affects Mack MR, MC, R, RD · 1990 — about 45 vehicles.
The hazard
THE STEERING ARMS ON THESE VEHICLES COULD DEVELOP CRACKS WHICH COULD PROLIFERATE AND EVENTUALLY CAUSE THE ARM TO BREAK WITHOUT WARNING. WHEN MANUFACTURED THESE LEVERS WERE NOT PEENED OR SHOT PEENING WAS INADEQUATE THEREBY ADVERSELY AFFECTING THE COMPRESSIVE STRESS LEVEL OF THE PART. CORRECTION: STEERING LEVERS WILL BE REPLACED WITH IMPROVED STEERING LEVERS WITH INCREASED FATIGUE STRENGTH.
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