Mack · Canada · Mod
Mack MH: Not Entered
Affects Mack MH · 1982–1984 — about 186 vehicles.
The hazard
WHEN THE TRACTOR BRAKES ARE APPLIED, THE TRAILER BRAKES MAY NOT REACT SIMULTANEOUSLY WITH THE TRACTOR. THIS CONDITION IS DUE TO TO A VALVE NOT RELEASING PROPER AIR VOLUME TO THE BRAKE.
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