Mack · Canada · High
Mack MC, MR +11 more: Not Entered
Affects Mack MC, MR, FM, RS, WL, WS, CF, F, MB, RWS, R, RL, RWL · 1978–1982 — about 329 vehicles.
The hazard
THE SPRING SEAT, WHICH IS LOCATED BETWEEN THE AXLE HOUSING AND THE REAR SUSPENSION SPRING PACK CAN DEFORM, RESULTING IN REDUCED CLAMPING FORCE IN THE SUSPENSION ASSEMBLY. THIS COULD CAUSE AXLE MISALIGNMENT, SPRING "U" BOLT LOOSENESS AND HOUSING FAILURE. AXLE DISLOCATION, WHICH COULD RESULT IN TIRE TO SPRING INTERFERENCE AND POSSIBLE IMPAIRMENT OF VEHICLE CONTROL, COULD OCCUR WITHOUT PRIOR WARNING.
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