MACK MACK Recalls

Aug 23, 2001 – VEHICLE DESCRIPTION: CHASSIS BUILT WITH A JACOBS VEHICLE SYSTEMS ELECTRONIC CONTROLLER FOR THE ELECTRIC DRIVELINE BRAKE SYSTEM. A FAILURE MODE WITHIN THE SOLID STATE CONTROLLER CAN CAUSE A SHORT FROM THE POSITIVE TERMINAL TO THE NEGATIVE TERMINAL OF THE BATTERY.

May 29, 1997 – EQUIPMENT DESCRIPTION: ELECTRONIC CONTROL MODULES INSTALLED ON A MACK REFUSE TRUCK. THE ELECTRONIC CONTROL MODULE (ECM) IN THESE ENGINES CONTAIN A MANUFACTURING DEFECT WHICH RESULTS IN INTERMITTENT ELECTRICAL CONTACT AND CAUSES INCORRECT ELECTRONIC SIGNALS TO BE SENT TO THE ENGINE THROTTLE CONTROL.

Jan 23, 1990 – THE 7/8 INCH SPRING EYE BOLTS WITHIN THE SPRING EYE BUSHING HANGER BRACKET OF THE REAR SUSPENSION MAY FAIL.

Feb 17, 1989 – AN INCORRECT 3/4 INCH BOLT WAS INSTALLED ON RT/RS 450 SUSPENSION.

Jul 28, 1988 – SOME AIR BRAKE HOSE ASSEMBLIES MAY NOT COMPLY WITH BURST STRENGTH REQUIREMENTS OF FMVSS 106.

Apr 15, 1988 – THE BUCKLE ASSEMBLY COULD HAVE A LARGE PAWL TO BASE CLEARANCE WHICH MAY NOT ALLOW THE PROPER ENGAGEMENT OF THE CONNECTOR.

Feb 09, 1987 – CROSSMEMBER CAN BE OVERSTRESSED AND CAN FAIL, ALLOWING THE BROKEN CROSSMEMBER TO PROTUDE ABOVE THE TOP OF THE FRAME AND INTERFERE WITH CHASSIS COMPONENTS.

Mar 10, 1986 – FRONT STEERING KNUCKLE THRUST BEARING MAY SHATTER INTO PIECES DUE TO IMPROPER HEAT TREATMENT. CONSEQUENCE OF DEFECT: FAILURE OF THE BEARING MAY AFFECT STEERING CONTROL. IF BEARING DISINTEGRATES, IT WOULD RESULT IN INCREASE STEERING DRAG AND/OR CAUSE STEERING LOCK UP WITH LOSS OF CONTROL WHICH COULD LEAD TO AN ACCIDENT.

Jan 22, 1986 – THE SPRING EYE BOLT WAS NOT TORQUED PROPERLY AND COULD FAIL DUE TO THE LOOSE FIT WITHIN THE SPRING EYE BUSHING/HANGER BRACKET. CONSEQUENCE OF DEFECT: THE SPRING COULD FALL ONTO THE ROAD SURFACE, WITHOUT WARNING TO THE DRIVER, AND A VEHICLE CRASH COULD OCCUR DUE TO THE SUDDEN DRAG OF THE SPRING.

Jan 14, 1986 – INCORRECT INNER WHEEL BEARINGS WERE INSTALLED IN THE REAR AXLES WHICH WEARS A GROOVE IN THE SPINDLE DUE TO A POOR FIT. CONSEQUENCE OF DEFECT: A DEEP GROOVE COULD CAUSE THE AXLE HOUSING TO BREAK AND RESULT IN A VEHICLE CRASH WITHOUT PRIOR WARNING.