1976–1978 Mack Rs Recall

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.

MACK RS