MACK Recalls

Nov 07, 1984 – THE SPRING CENTER BOLT IS NOT THE PROPER SIZE OR LENGTH. AS A RESULT, LOCATION AND ALIGNMENT OF THE SPRING TO THE FRONT AXLE MAY NOT BE CORRECT. IF THE FRONT SPRING CLIPS LOOSEN, THE INADEQUATE CENTER BOLT MAY RESULT IN SPRING TO AXLE MISALIGNMENT, SHIFTING OF THE AXLE, AND LOSS OF STEERING CONTROL.

Apr 03, 1984 – THE FUEL TANK STRAPS MAY DEVELOP MICROSCOPIC CRACKS IN THE PLATING OF THE UPPER END LOOP, EXPOSING THE PARENT METAL TO THE ATMOSPHERE. AIR EXPOSURE PROMOTES CORROSION AND MAY LEAD TO PREMATURE FAILURE, ALLOWING THE FUEL TANK TO DROP.

Mar 23, 1984 – A MANUFACTURING ERROR RESULTED IN THE INSTALLATION OF CARBON STEEL SPRINGS IN SOME DUAL-COMPARTMENT AIR RESERVOIR CHECK VALVES. CARBON STEEL SPRINGS ARE INADEQUATE FOR THIS APPLICATION BECAUSE THEY ARE SUBJECT TO SEVERE CORROSION AND SUBSEQUENT FAILURE OF THE CHECK VALVE.

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.

Mar 22, 1984 – IMPROPER STEERING CLAMP BOLTS AND TORQUE APPLIED DURING INSTALLATION. THE BOLT COULD FAIL, ALLOWING THE STEERING YOKE TO BECOME LOOSE.

Nov 18, 1983 – MOUNTING OF THE PITMAN ARM MAY LOOSEN AND LEAD TO EXCESSIVE WEAR IN EITHER THE PITMAN ARM SPLINES OR THE STEERING GEAR SHAFT SPLINES, OR BOTH. THIS CONDITION IS DUE TO INCORRECT TIGHTENING OF THE MOUNTING SCREWS DURING ASSEMBLY.

Sep 27, 1983 – UNDER SEVERE STRAIN, A DEFECTIVE WELD JOINING THE STEERING WHEEL HUB TO THE HUB PERIMETER COULD FAIL, CAUSING THE STEERING WHEEL TO SEPARATE FROM THE VEHICLE.

Sep 27, 1983 – BOLTED INSTALLATION OF THE STEERING GEAR HOUSING HAS A TENDENCY TO LOOSEN IN SERVICE. THIS IS DUE TO A BACKWARD INSTALLATION OF THE LOCKWASHERS, WHICH ARE BELLVILLE TYPE, AND A RESULTANT INCORRECT TORQUE ON THE BOLTS.

Sep 27, 1983 – THE YOKE OF THE TRANSMISSION PROPELLER SHAFT MAY LACK REQUIRED STRENGTH DUE TO ERRONEOUS COUNTERBORE OPERATION IN WHICH 10 MILLIMETERS OF EXTRA MATERIAL MAY HAVE BEEN CUT. THIS CONDITION COULD LEAD TO FRACTURE OF THE YOKE IN SERVICE.

Apr 14, 1983 – THE PITMAN ARM, A LEVER THAT TRANSMITS TURNING MOVEMENTS FROM THE STEERING GEAR TO THE STEERING LINKAGE, MAY LOOSEN OR BREAK AT ITS CONNECTION TO THE STEERING LINKAGE. THE FAILURE CAN PREVENT TURNING ATTEMPTS FROM HAVING ANY EFFECT. THE DEFECT IS CAUSED BY INCORRECT ASSEMBLY OF THE BALL STUD CONNECTION IN THE PITMAN ARM.