MACK U Recalls - View the latest MACK U Recalls from the NHTSA

Auto Recalls For Consumers

by Mack Trucks, Inc.

MACK U RECALLS - (35 Recalls Found)

Find your vehicle listed below. Results are sorted year from newest to oldest. Select the desired vehicle to view the complete details. Information provided by the National Highway Traffic Safety Administration.

1992 MACK U Recall - VEHICLE SPEED CONTROL

Problem: 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. Recall Details

1991 MACK U Recall - VEHICLE SPEED CONTROL

1990 MACK U Recall - VEHICLE SPEED CONTROL

1989 MACK U Recall - VEHICLE SPEED CONTROL

1989 MACK U Recall - VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES

Problem: A TOLERANCE MISMATCH IN THE CRANK ASSEMBLY OF THE BOSCH WINDSHIELD WIPER MOTOR COULD CAUSE INSTANTANEOUS SEPARATION OF THE CRANK FROM THE LINKAGE ASSEMBLY IN THE LEFT HAND CONTROL ARM ASSEMBLY; THIS WOULD MAKE THE SYSTEM INOPERABLE. Recall Details

1988 MACK U Recall - VEHICLE SPEED CONTROL

1987 MACK U Recall - VEHICLE SPEED CONTROL

1979 MACK U Recall - ENGINE AND ENGINE COOLING:ENGINE

Problem: IN THE EVENT OF TURBOCHARGER COMPRESSOR WHEEL FAILURE, ONE OR MORE OF THE FOUR CAPSCREWS THAT HOLD THE TURBOCHARGER TOGETHER MAY BE STRUCK BY PARTS OF THE COMPRESSOR WHEEL, RESULTING IN THE CAPSCREWS BEING DAMAGED. IF THESE CAPSCREWS ARE DAMAGED TO THE POINT THAT THEY ALLOW THE COMPRESSOR BACK PLATE TO DISLOCATE FROM THE TURBOCHARGER BEARING HOUSING, ENGINE LUBRICATING OIL MAY BE ALLOWED TO ESCAPE UNDER PRESSURE, CONTACTING THE ENGINE EXHAUST MANIFOLD SECTIONS OR TURBOCHARGER TURBINE HOUSING. Recall Details

1978 MACK U Recall - ENGINE AND ENGINE COOLING:ENGINE

1978 MACK U Recall - STEERING: STEERING WHEEL/HANDLE BAR

Problem: AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED IN THE CLAMPING OF THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. DUE TO CLAMPING FORCE LOADS APPLIED AT THE BOLT, THE NUT COULD YIELD, RESULTING IN LOOSENESS OF THE INPUT SHAFT YOKE. SHOULD THIS CONDITION GO UNNOTICED, SPLINE WEAR COULD CAUSE SHAFT SEPARATION. Recall Details

1978 MACK U Recall - SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)

Problem: DELAYS OF UP TO ABOUT 2 SECONDS MAY EXIST IN THE BRAKE APPLICATION TIMES TO THE BRAKES ON THE BOGIE AXLES IN THE PRESENCE OF CERTAIN TYPES OF WHEEL SPEED SENSOR SIGNAL DISCONTINUITIES OR DISTORTIONS THAT MAY OCCUR AS A RESULT OF SENSOR WIRE FAILURE. THIS CONSTITUTES A NON-COMPLIANCE TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". Recall Details

1978 MACK U Recall - SUSPENSION:MULTIPLE AXLE

Problem: A CASTING DEFICIENCY EXISTS IN THE LOWER SECTION OF THE CAPS RESULTING IN A REDUCTION IN THE THICKNESS OF THE MATERIAL. FAILURE OF A CAP CAN ALLOW THE END OF THE REAR SPRING TO DETACH FROM THE AXLE HOUSING. Recall Details

1978 MACK U Recall - SUSPENSION:MULTIPLE AXLE

Problem: THE TEE BRACKET, WHICH IS MOUNTED ON THE FRONT AXLE OF THE BOGIE, MAY FAIL DUE TO VIBRATION BROUGHT ON BY ROAD SURFACE IRREGULARITIES. BRACKET FAILURE WOULD LEAVE THE TEE BRACKET UNSUPPORTED AND CAUSE BROKEN HOSE CONNECTOR FITTINGS. THIS WOULD RESULT IN AUTOMATIC APPLICATION OF THE SPRING EMERGENCY BRAKES. Recall Details

1977 MACK U Recall - SUSPENSION:MULTIPLE AXLE

1977 MACK U Recall - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

Problem: THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF. Recall Details

1977 MACK U Recall - SEAT BELTS:FRONT:ANCHORAGE

Problem: THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, "SEATBELT ASSEMBLIES". ALTHOUGH THE SEATBELTS IN QUESTION PERFORMED MARGINALLY WITH RESPECT TO THE 5000 LB. LOAD REQUIREMENT, ADDITIONAL TESTING CONFIRMED THAT THE ANCHOR COULD FAIL, ALLOWING EITHER THE ANCHOR TO SLIP OVER THE HOLD-DOWN NUT OR THE ANCHOR TO SEPARATE INTO TWO PIECES. Recall Details

1977 MACK U Recall - SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET

Problem: A DEFICIENCY EXISTS IN THE WELDS SECURING THE REAR SPRING INSULATOR BRACKET TO THE AXLE HOUSING. THIS IS DUE TO IMPROPER POSITIONING OF THE WELD, IN RELATIONSHIP TO THE BRACKET AND AXLE HOUSING. FAILURE OF THE WELDS WOULD CAUSE SEPARATION OF THE SPRING INSULATOR BRACKET AND THE AXLE HOUSING, RESULTING IN IMPROPER ALIGNMENT OF THE AFFECTED AXLE. Recall Details

1977 MACK U Recall - STEERING: STEERING WHEEL/HANDLE BAR

1977 MACK U Recall - SUSPENSION:MULTIPLE AXLE

1977 MACK U Recall - SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)

1977 MACK U Recall - ENGINE AND ENGINE COOLING:ENGINE

1976 MACK U Recall - SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE

Problem: AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED. Recall Details

1976 MACK U Recall - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

1976 MACK U Recall - SUSPENSION:MULTIPLE AXLE

1975 MACK U Recall - SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE

1975 MACK U Recall - SUSPENSION:MULTIPLE AXLE

1975 MACK U Recall - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

1974 MACK U Recall - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

1974 MACK U Recall - SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE

1974 MACK U Recall - STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM

Problem: DEFICIENCIES, IN THE FORM OF FORGING LAPS, CRACKS AND EXCESSIVE DECARBURIZATION DURING HEAT TREATMENT, EXIST IN THE STEERING KNUCKLES. STRESSES IMPOSED WITH INTEGRAL HYDRAULIC POWER STEERING MAY LEAD TO A FAILURE IN THE AREA OF THE STEERING ARM ATTACHING BOSS. THIS TYPE OF FAILURE WOULD CAUSE LOSS OF STEERING CONTROL. Recall Details