MACK MR Recalls

Feb 16, 1993 – THE CARRIER YOKE BOLTS WERE MANUFACTURED WITH WORN ROLLING THREAD DIES, CAUSING STRESS CONCENTRATIONS WHICH CAUSED CRACKS DURING THE QUENCHING PROCESS.

Oct 21, 1991 – THE STONE BENNETT SHIFTERS DO NOT INDICATE THE RELATIVE POSITION OF THE SHIFT LEVER TO THE DRIVER.

Jan 12, 1989 – EXHAUST HEAT SHIELD WAS NOT INSTALLED IN PRODUCTION.

Sep 27, 1988 – FASTENERS THAT HOLD THE REAR WHEEL TO THE HUB AND DRUM ASSEMBLY MAY BE IMPROPERLY TORQUED.

Sep 27, 1988 – THE UNDERSIZED WELD ON THE REAR SUSPENSION BRACKETRY ATTACHMENT CAN CAUSE BRACKET FAILURE.

Mar 28, 1988 – SEAT BELT MOUNTING BOLTS ON THE INBOARD SIDE OF RIDERS SEAT MAY HAVE BEEN UNDERTORQUED.

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

Nov 26, 1985 – THE QUICK RELEASE VALVE SUPPORT BRACKET MOUNTED ON THE AXLE MAY CRACK. THIS CAUSES FATIGUE FAILURE OF THE STEEL AIR LINES LEADING TO THE REAR PARKING BRAKES AND CHASSIS SERVICE BRAKES RESULTING IN SUDDEN LOSS OF AIR PRESSURE. CONSEQUENCE OF DEFECT: THIS SUDDEN LOSS OF AIR TO THE BRAKE CHAMBERS WILL RESULT IN AUTOMATIC ACTUATION OF REAR PARKING BRAKE CAUSING SUDDEN REAR WHEEL LOCKUP WHICH MAY CONTRIBUTE TO AN ACCIDENT.

Mar 23, 1984 – SPRING SEAT CAN DEFORM, WHICH CAUSES A DECREASE IN THE CLAMPING FORCE IN THE SUSPENSION ASSEMBLY. LOSS OF CLAMPING FORCE MAY BRING ABOUT AXLE MISALIGNMENT OR AXLE HOUSING FAILURE.

Dec 21, 1982 – DUE TO THE HIGH STRAIN WITHIN THE FAN BLADES OF THE COOLING FAN, CRACKS MAY DEVELOP IN THE FAN. THESE CRACKS MAY LEAD TO COMPLETE FRACTURE OF THE COOLING FAN, PROPELLING THE FAN AND PIECES OF THE FAN BLADES OUTSIDE THE FAN SHROUD.