MACK F Recalls

Aug 03, 1998 – VEHICLE DESCRIPTION: FRONT DISCHARGE, REAR ENGINE MIXERS. THE FAN DRIVE PULLEY THAT ATTACHES TO THE WATER PUMP CAN SHOW EXCESSIVE AXIAL RUNOUT CAUSING THE FAN AND PART OF THE FAN DRIVE TO SEPARATE FROM THE DRIVE PULLEY.

Oct 20, 1997 – VEHICLE DESCRIPTION: FRONT DISCHARGE MIXER CHASSIS. THE ORIGINAL EQUIPMENT MITER BOXES HAVE NO PROTECTIVE BOOTS ON THE SHAFTS AND DIRT CAN ENTER THE SYSTEM CAUSING THE GEAR SHAFT BEARINGS TO DETERIORATE.

Feb 15, 1994 – FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.

Nov 01, 1993 – THE DRIVESHAFT TO THE FRONT DRIVING AXLE IS SECURED TO A BRACKET USING TWO PILLOW BLOCKS. THESE BLOCKS ARE OF INSUFFICIENT STRENGTH TO SUPPORT THE DRIVESHAFT AND COULD FAIL.

Aug 20, 1993 – THE ENGINE COOLING FAN BLADES MAY BREAK DUE TO INADEQUATE BLADE STRENGTH AROUND THE RIVETS THAT ATTACH THE BLADES TO THE FAN SPIDER.

Mar 04, 1988 – SOME DEADMAN PEDALS WERE ASSEMBLED WITH INCORRECT BOLTS WHICH COULD CAUSE A MALFUNCTION WITHOUT ANYONE STEPPING ON THE PEDAL.

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.

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.

Jul 08, 1981 – THE RETAINING PIN FOR THE BRAKE CONTROL KNOB HAS BEEN MISALIGNED (OFF THE CENTER LINE OF THE VALVE PLUNGER HOLE). THIS CAUSES THE KNOB TO BE OVERSTRESSED AT THE RETAINING PIN HOLE AREA CAUSING IT TO SEPARATE FROM THE VALVE.

May 06, 1980 – THE STEERING ARM MAY DEVELOP CRACKS DUE TO INSUFFICIENT FATIGUE LIFE IN THE MACHINE RADIUS OF THE TAPER AT THE STEERING KNUCKLE END.