Mack · Canada · High
Mack R, MB +3 more: Not Entered
Affects Mack R, MB, F, DMM, RD · 1978 — about 9 vehicles.
The hazard
TRUCKS EQUIPPED WITH MACK SH34 OR SH38 BOGIE SUSPENSIONS. THE BEAM HANGER BRACKETS MADE BY SUPERIOR STEEL CASTINGS HAVE LOW MECHANICAL PROPERTIES AND EXCESSIVE SHRINKAGE. FAILURE OF ONE OR MORE OF THESE BRACKETS COULD ALLOW THE AXLE HOUSING TO SEPARATE FROM THE SUSPENSION CAUSING A LOSS OF VEHICLE CONTROL.
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