The issue
ANTI-WHEEL LOCK VALVES SUPPLIED BY EATON CORPORATION MAY BE EXPOSED TO ACCUMULATED CONCENTRATIONS OF FLUID CONTAMINANTS IN THE AIR BRAKE SYSTEM THAT COULD CAUSE THE PISTON TO STICK THEREBY PREVENTING ANY AIR FROM BEING DELIVERED TO THE AIR BRAKE CHAMBERS SUPPLIED BY THAT VALVE. LTHIS CONDITION WILL RESULT IN A NO BRAKE APPLICATION ON THE AFFECTED AXLE, THEREBY EXTENDING VEHICLE STOPPING DISTANCES.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Mack DM | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack DMM | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack F | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack HMM | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack MB | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack R | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack RD | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack RL | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack RM | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack RS | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack U | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack WL | 1974, 1975, 1976, 1977, 1978, 1979 |
| Mack WS | 1974, 1975, 1976, 1977, 1978, 1979 |