The issue
TRUCKS EQUIPPED WITH ANCHORLOCK AIR DRYERS. A DESIGN DEFICIENCY EXISTS IN THE AIR DRYER PIPING THAT CAN ALLOW MOISTURE FROM THE COMPRESSED AIR TO FREEZE ALLOWING A BUILD UP OF EXCESSIVE AIR PRESSURE THAT WOULD CAUSE THE AIR PIPING CONNECTIONS TO SEPARATE. THIS WOULD LEAD TO AN AUTOMATIC APPLICATION OF THE CHASSIS EMERGENCY SPIRNG BARKES AND TRAILER BREAKES, WITHOUT WARNING, AND POSSIBLY CAUSE A LOSS OF VEHICLE CONTROL.
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 RL | 1976, 1977, 1978 |
| Mack RS | 1976, 1977, 1978 |
| Mack WL | 1976, 1977, 1978 |
| Mack WS | 1976, 1977, 1978 |