MACK Recalls

Nov 23, 1987 – CROSS STEERING LEVERS MAY BE IMPROPERLY HEAT TREATED AND SUBJECT TO FAIL DURING NORMAL OPERATION.

Oct 26, 1987 – ON RIGHT HAND STEERING ARM, KEYWAY MAY BE IN THE WRONG LOCATION CAUSING A TOGGLE CONDITION TO OCCUR UNDER CERTAIN CONDITIONS.

Jul 15, 1987 – MINIMUM AIR RESERVOIR VOLUME CAPACITY IS LESS THAN REQUIRED BY FMVSS NO. 121.

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.

May 27, 1986 – THE SEALANT USED ON THE INJECTION PUMP COULD PENETRATE THROUGH THE BUSHING AND GET BETWEEN THE THROTTLE SHAFT AND BUSHINGS CAUSING THE SHAFT TO BIND. CONSEQUENCE OF DEFECT: THROTTLE SHAFT SEIZURE MAY CAUSE THE ENGINE TO STAY ON FULL THROTTLE, AND RESULT IN LOSS OF OPERATOR CONTROL AND POSSIBLY AN ACCIDENT.

May 27, 1986 – STEERING COLUMN BOOT ATTACHED TO EXTERIOR OF FIREWALL COULD BE DEFORMED BY THE SOUND INSULATION PLACED ON THE FIREWALL AND CAUSES INTERFERENCE WITH THE STEERING SHAFT U-JOINT BOLT. CONSEQUENCE OF DEFECT: AN IMPROPERLY FITTED OR DEFORMED BOOT COULD GET CAUGHT ON BOLT WHICH RETAINS THE STEERING U-JOINT AND RESULT IN SUDDEN HARD STEERING, POSSIBLE LOSS OF CONTROL AND A POTENTIAL CRASH.

May 27, 1986 – THE DRAG LINK TO PITMAN ARM TOGGLE ANGLE MAY BE GREATER THAN DESIGN CRITERIA, AND MAY CAUSE THE STEERING TO BIND. CONSEQUENCE OF DEFECT: IF TRUCK NEGOTIATES EXTREME RIGHT HAND TURN THE LEFT FRONT WHEEL DROPS INTO A DEEP HOLE, STEERING RETURN WOULD BE SLOW, WITHOUT WARNING TO OPERATOR, CREATING POTENTIAL FOR A VEHICLE CRASH.

May 27, 1986 – AN INCORRECT STEERING SHAFT RETAINING NUT IS INSTALLED ON THE SHAFT AND CAN LOOSEN CAUSING STEERING PLAY. CONSEQUENCE OF DEFECTS: IF NUT IS NOT REPLACED, STEERING WHEEL DISENGAGEMENT COULD OCCUR CAUSING LOSS OF STEERING CONTROL AND POSSIBLY A VEHICLE CRASH.

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.