Mack · Canada · Crit
Mack MS300, Midliner: Not Entered
Affects Mack MS300, Midliner · 1980–1981 — about 30 vehicles.
The hazard
THE TRANSMISSION OUTPUT YOKE MKAY FAIL DUE TO THE COUNTERBORE BEING MACHINED OVERSIZE BY 10 M.M. FAILURE WOULD MOST LIKELY OCCUR UNDER HEAVY THROTTLE AT FULL TORQUE AS IN AN INITIAL START MODE. IN SUCH A CASE SHRAPNEL MAY BE PROPELLED OUTWARD FROM THE VEHICLE CAUSING INJURY TO BYSTANDERS. FAILURE COULD ALSO OCCUR DURING NORMAL HIGHWAY OPERATION WITHOUT PRIOR WARNING CAUSING LOSS OF POWER TO THE REAR WHEELS.
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