Mack · Canada · Mod
Mack RD, MB +6 more: Not Entered
Affects Mack RD, MB, RM, U, DMM, F, DM, R · 1977–1978 — about 5 vehicles.
The hazard
TRUCKS EQUIPPED WITH BENDIX ANTI-WHEEL LOCK ELECTRONIC CONTROLLERS. A DIODE FAILURE WHTHIN THE ELECTRONIC CONTROLLER MAY BLOCK AIR PRESSURE TO THE BRAKE CHAMBERS RESULTING IN A NO-BRAKE SITUATION AT THE AFFECTED WHEELS. THIS CONDITION WOULD AFFECT THE AXLE-BY-AXLE AND BOGIE ANTI-WHEEL LOCK CAPABILITY AND MAY RESULT IN A VEHICLE CRASH.
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