Mack U Recalls

A TOLERANCE MISMATCH IN THE CRANK ASSEMBLY OF THE ROBERT BOSCH WINDSHIELD WIPER MOTOR SYSTEM COULD CAUSE INSTANTANEOUS SEPARATION OF THE CRANK FROM THE LINKAGE ASSEMBLY IN THE LEFT

THE HIGH PRESSURE POWER STEERING HOSE MAY NOT MEET THE RATED BURST STRENGTH PRESSURE REQUIREMENTS. HOSE FAILURE WITH SUBSEQUENT LOSS OF STEERING POWER ASSIST AND INCREASED STEERING

NOTE: VEHICLES MANUFACTURED AT THE WINNSBORO, SOUTH CAROLINA FACILITY. THE STEERING WHEEL RETAINING NUTS MAY HAVE BEEN IMPROPERLY INSTALLED AND/OR TORQUED. IF EITHER OF THESE PROCE

THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 106 - BRAKE HOSES (BURST STRENGTH).

SOME OF THE NUTS/BOLTS USED TO FASTEN THE STEERING PITMAN ARM MAY LOOSEN AND COULD CAUSE LOSS OF STEERING CONTROL AND A VEHICLE CRASH WITHOUT PRIOR WARNING. CORRECTION: THE NUTS/BO

THE CLAMP PLATES BETWEEN THE DRIVE SHAFT AND CARRIER YOKE COULD CRACK. A BROKEN CLAMP PLATE WOULD RESULT IN THE YOKE FLYING OFF AT THE DETACHED POINT. THIS COULD CAUSE INJURY FROM

ON TRUCKS WITH MACK FA(W)616 OR 617 SERIES FRONT AXLE, THE CROSS STEERING LEVERS MAY BE IMPROPERLY HEAT-TREATED. THIS COULD REDUCE THEIR FATIQUE LIFE AND RESULT IN FAILURE. SUCH A

NOTE: 1971 TO 1987 TRUCKS WITH NEWAY AIR RIDE DRIVE AXLE SUSPENSION. THE CHANNEL TYPE CROSSMEMBER INSTALLED WITH THE SUSPENSION CAN BE OVERSTRESSED AND CAN FAIL. THE BROKEN CROSSME

IT IS POSSIBLE THAT IMPROPER STEERING SHAFT CLAMP BOLTS WERE INSTALLED AND TORQUED TO THE WRONG SPECIFICATIONS. BECAUSE OF THE OVERLOADED CLAMPING FORCE APPLIED TO THE BOLT, THE BO

UNDER CERTAIN CONDITIONS THE MINIMUM STEERING SHAFT SLIP SPLINE ENGAGEMENT CAN BE AGGRAVATED AND STEERING SHAFT SEPARATION COULD OCCUR. THIS MAY LEAD TO LOSS OF STEERING CONTROL WI

THE BRAKE CONTROL KNOB COULD FALL OFF DUE TO THE LOCATION OF THE HOLE FOR THE RETAINING PIN BEING OFF THE CENTERLINE OF THE HOLE FOR THE VALVE PLUNGER. WHEN THE RETAINING PIN IS IN

VEHICLES MAY BE EQUIPPED WITH A DANA CORPORATION LOWER STEERING SHAFT IN WHICH THE PINCH BOLT CLAMP MAY DEFORM RESULTING IN A LOSS OF CLAMPING FORCE AND DISLOCATION OF THE PINCH BO

VEHICLES MAY BE QEUIPPED WITH TRACTOR PARK VALVE CONTROL KNOBS MANUFACTURED BY POLYFLEX CONTROLS THAT MAY BREAK AT THE KNOB RETAINING PIN HOLE LOCATION. THIS CONDITION WOULD RENDER

TRUCKS EQUIPPED WITH MACK ENDT (B) 676, ETAZ (B) 673A AND ETAY (B) 673A ENGINES WITH AIRESEARCH TV6103 TURBO-CHARGERS. IN SOME INSTNACES OF TURBOCHARGER COMP[RESSOR WHEEL FAILURE T

ANTI-WHEEL LOCK VALVES SUPPLIED BY EATON CORPORATION MAY BE EXPOSED TO ACCUMULATED CONCENTRATIONS OF FLUID CONTAMINANTS IN THE AIR BRAKE SYSTEM THAT COULD CAUSE THE PISTON TO STICK

TRUCKS WITH MACK SW57,SW76,S38,OR S44 TANDEM AXLES. A CASTING DEFECT IN THE BOGIE SPRING INSULATOR CAP CAN ALLOW THE END OF THE REAR SPRING TO DETACH FROM THE AXLE HOUSING RESULTIN

TRUCKS EQUIPPED WITH BENDIX ANTI-WHEEL LOCK ELECTRONIC CONTROLLERS. A DIODE FAILURE WHTHIN THE ELECTRONIC CONTROLLER MAY BLOCK AIR PRESSURE TO THE BRAKE CHAMBERS RESULTING IN A NO-

TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED TRUCKS EQUIPPED WITH BOGIE (TANDEM REAR) AXLES THAT ARE EQUIPPED WITH A SINGLE ANTI-WHEEL LOCK CONTROLLER. WHEEL SE

VEHICLES E3QUIPPED WITH MACK FA534 SERIES FRONT STEERING AXLES AND INTEGRAL HYDRAULIC POWER STEERING. THE STEERING KNUCKLES MAY HAVE A REDUCED FATIGUE LIFE AS A RESULT OF IMPROPER

TRUCKS EQUIPPED WITH SW56 OR SW57 SERIES HIGHWAY BOGIES (TANDEM AXLES). THE BRAKE HOSE BRACKET MOUNTED ON THE FRONT AXLE OF THE BOGIE MAY FAIL LEAVING THE BRAKE TEE UNSUPPORTED. TH

VEHICLES EQUIPPED WITH SWTL56, SW56 OR SW57 SERIES BOGIES (TANDEM AXLES). THE WELDS SECURING THE REAR AXLE SPRING INSULATOR BRACKET TO THE AXLE HOUSING ARE IMPROPERLY POSITIONED AN

TRUCKS EQUIPPED WITH MACK 6 CYLINDER ENGINES AND FLEXIBLE BLADE ENGINE COOLING FANS. THE FLEXIBLE BLADE FANS MAY DEVELOP FATIGUE CRACKS IN THE LAMINATED STIFFENER. CONTINUED ENGINE

TRUCKS EQUIPPED WITH CERTAIN SEAT BELT ASSEMBLIES MANUFACTURED BY INDIANA MILLS AND MANUFACTURING INC. THE SEAT BELT ASSEMBLIES, STYLE NO. IMM-385 AND B1000R-P, PERFORMED MARGINALL

THE PRIMARY AND SECONDARY AIR SUPPLY LINES MAY HAVE BEEN CONNECTED IN REVERSE AT THE DUAL BRAKE TREADLE VALVE.

VEHICLES EQUIPPED WITH SW56, 78, 82 AND 86 SERIES REAR AXLES. THE REAR AXLE TRUNNION BRACKET MAY DEVELOP CRACKS. IF THE CRACKS ARE NOT DETECTED, CONTINUED OPERATION COULD ULTIMATEL