Mack · Canada · High
Mack HMM6856S: Not Entered
Affects Mack HMM6856S · 1973–1977 — about 0 vehicles.
The hazard
TRUCKS EQUIPPED WITH POWER STEERING. A DEFICIENCY EXISTS IN THE PITMAN ARM CAUSED BY VENDOR AND MACK PART NUMBERS CAST INTO THE ARM. THE CAST NUMBERS CAUSE A STRESS CONCENTRATION THAT COULD LEAD TO A PITMAN ARM FAILURE CAUSING A LOSS OF VEHICLE 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