Mack · Canada · Mod
Mack MS300: Not Entered
Affects Mack MS300 · 1980–1981 — about 6 vehicles.
The hazard
HOLES DRILLED IN TRANSMISSION AND REAR AXLE DRIVE LINE YOKES TO BALANCE THEM COULD LEAD TO FAILURE OF THE YOKE WHILE VEHICLE IS BEING DRIVEN WITHOUT ANY WARNING TO DRIVER. THIS SITUATION WOULD CAUSE THE DRIVE SHAFT TO COME LOOSE AND COULD RESULT IN DAMAGE TO THE BRAKE AIR LINES.
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