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CA1975085

Mack RL

Mack RL

Published
1975-08-21
Model years
1974–1975

THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT MAY HAVE INADVERTENTLY PLUGGED AND THE SAFETY VALVE ON THE AIR RESERVOIR MAY HAVE BEEN OMITTED. IF THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT IS PLUGGED, IT COULD CAUSE INTERMITTENT LOCK-UP OF THE TRAILER BRAKES AND OCCASIONAL DIFFICULTY IN CHARGING THE TRAILER BRAKE AIR SYSTEM. OMISSION OF THE AIR RESERVOIR SAFETY VALVE COULD RESULT IN EXCESSIVE AIR BRAKE SYSTEM PRESSURES IN THE EVENT OF A MALFUNCTION OF THE AIR COMPRESSOR GOVERNOR. CONTINUED VEHICLE OPERATION WITH EXCESSIVE PRESSURE COULD LEAD TO SYSTEM FAILURE.

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Mack RS

Published
1975-08-21
Model years
1974–1975

THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT MAY HAVE INADVERTENTLY PLUGGED AND THE SAFETY VALVE ON THE AIR RESERVOIR MAY HAVE BEEN OMITTED. IF THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT IS PLUGGED, IT COULD CAUSE INTERMITTENT LOCK-UP OF THE TRAILER BRAKES AND OCCASIONAL DIFFICULTY IN CHARGING THE TRAILER BRAKE AIR SYSTEM. OMISSION OF THE AIR RESERVOIR SAFETY VALVE COULD RESULT IN EXCESSIVE AIR BRAKE SYSTEM PRESSURES IN THE EVENT OF A MALFUNCTION OF THE AIR COMPRESSOR GOVERNOR. CONTINUED VEHICLE OPERATION WITH EXCESSIVE PRESSURE COULD LEAD TO SYSTEM FAILURE.

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Mack WL

Published
1975-08-21
Model years
1974–1975

THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT MAY HAVE INADVERTENTLY PLUGGED AND THE SAFETY VALVE ON THE AIR RESERVOIR MAY HAVE BEEN OMITTED. IF THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT IS PLUGGED, IT COULD CAUSE INTERMITTENT LOCK-UP OF THE TRAILER BRAKES AND OCCASIONAL DIFFICULTY IN CHARGING THE TRAILER BRAKE AIR SYSTEM. OMISSION OF THE AIR RESERVOIR SAFETY VALVE COULD RESULT IN EXCESSIVE AIR BRAKE SYSTEM PRESSURES IN THE EVENT OF A MALFUNCTION OF THE AIR COMPRESSOR GOVERNOR. CONTINUED VEHICLE OPERATION WITH EXCESSIVE PRESSURE COULD LEAD TO SYSTEM FAILURE.

View the official source notice →

Mack WS

Published
1975-08-21
Model years
1974–1975

THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT MAY HAVE INADVERTENTLY PLUGGED AND THE SAFETY VALVE ON THE AIR RESERVOIR MAY HAVE BEEN OMITTED. IF THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT IS PLUGGED, IT COULD CAUSE INTERMITTENT LOCK-UP OF THE TRAILER BRAKES AND OCCASIONAL DIFFICULTY IN CHARGING THE TRAILER BRAKE AIR SYSTEM. OMISSION OF THE AIR RESERVOIR SAFETY VALVE COULD RESULT IN EXCESSIVE AIR BRAKE SYSTEM PRESSURES IN THE EVENT OF A MALFUNCTION OF THE AIR COMPRESSOR GOVERNOR. CONTINUED VEHICLE OPERATION WITH EXCESSIVE PRESSURE COULD LEAD TO SYSTEM FAILURE.

View the official source notice →