Showing 429 recalls for MACK
THERE MAY BE SPRING EYE CONTACT WITH THE SPRING BRACKET AND HIGH STRESS LEVELS IN THE BRACKET.
67 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: SPRING BRACKET FAILURE AND CONSEQUENT FRONT SPRINGDISLOCATION COULD RESULT IN IMPAIRED STEERING CONTROL IN A TURNING MANEUVER.
Remedy: CHASSIS WILL BE RETROFITTED WITH CURRENT PRODUCTION FRONT SPRING REAR BRACKETS TO ELIMINATE ANY INTERFERENCE.
STEERING WHEEL RETAINING NUTS MAY HAVE BEEN IMPROPERLY INSTALLED AND/OR TORQUED.
16,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: RENEW AND RETORQUE STEERING WHEEL RETAINING NUTS.
TORQUE ROD BOLTS ARE GRADE 2 INSTEAD OF GRADE 5, WHICH IS NOT TO SPECIFICATION, AND COULD FAIL.
100 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: BOLT FAILURE COULD ALLOW THE REAR AXLE TO SHIFT; THISCOULD ADVERSELY AFFECT TRUCK CONTROL AND COULD RESULT IN A CRASH.
Remedy: REPLACE TORQUE ROD BOLTS WITH BOLTS OF THE PROPER SPECIFICATION.
TOTAL CAPACITY OF AIR BRAKE RESERVOIR MAY BE SLIGHTLY LESS THAN REQUIRED BY FMVSS 121.
281 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: TRUCKS WOULD NOT COMPLY WITH STANDARD.
Remedy: REPAIR TO ASSURE CORRECT TOTAL CAPACITY OF AIR BRAKE RESERVOIRS.
DOWELS MAY HAVE BEEN OMITTED DURING SPRING CAP INSTALLATION; THIS WOULD PUT SHEAR LOAD ON THE FOUR (4) SPRING CAP BOLTS.
152 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS COULD RESULT IN LOOSENING AND FAILURE OF THE BOLTSWITH POSSIBLE LOSS OF CONTROL AND ACCIDENT POTENTIAL.
Remedy: INSTALL THE MISSING DOWELS TO PREVENT MOVEMENT BETWEEN THE SPRING CAP AND AXLE HOUSING.
AN INCORRECT HIGH PRESSURE POWER STEERING HOSE MAY HAVE BEEN INSTALLED.
3,127 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: UNDER CERTAIN CONDITIONS, HOSE COULD FAIL RESULTING INLOSS OF POWER STEERING ASSIST AND POSSIBLY AN ACCIDENT.
Remedy: REPLACE INCORRECT POWER STEERING HOSES.
SEAT TETHER BELT 11.0 INCHES LONG WAS INSTALLED INSTEAD OF THE 8.5 INCHES LONG BELT REQUIRED FOR THIS CHASSIS.
19 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: INCORRECT LENGTH BELT MAY NOT PROPERLY RESTRAIN OCCUPANTAND WOULD NOT COMPLY WITH FMVSS 210.
Remedy: INSTALL CORRECT 8.5 INCH SEAT TETHER BELT.
MACK MACK (1984) — SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE
AN INCORRECT 3/4 INCH BOLT WAS INSTALLED ON RT/RS 450 SUSPENSION.
18 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS BOLT MAY BREAK, CAUSING DISENGAGEMENT OF THE BEAM CONNECTION OF REAR SUSPENSION, RESULTING IN LOSS OF CONTROL, WHICH COULD RESULT IN AN ACCIDENT.
Remedy: RETROFIT CHASSIS WITH 1 INCH BOLTS.
MACK MR600 (1988) — ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
EXHAUST HEAT SHIELD WAS NOT INSTALLED IN PRODUCTION.
1,500 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE LACK OF THIS SHIELD CAN ALLOW FALLING REFUSE TO CAUSEA VEHICLE FIRE.
Remedy: INSTALL AN EXHAUST PIPE HEAT SHIELD.
ENGINE COOLING FAN IS SUBJECT TO HIGH STRESS AND POTENTIAL FATIGUE PROBLEMS.
400 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: FAN FAILURE COULD RESULT IN PARTS BEING PROPELLED OUTSIDEOF THE FAN SHROUD, WHICH COULD INJURE THE PERSON STANDING NEAR THE ENGINECOMPARTMENT.
Remedy: REPLACE FAN WITH AN ALTERNATE FAN.
CERTAIN ENGINE SUPPORT CASTINGS WERE PRODUCED WITH FAULTY METALLURGY AND COULD FAIL.
408 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: FAILURE OF ONE OR BOTH BRACKETS COULD CAUSE DISLOCATIONOF ENGINE AND TRANSMISSION ASSEMBLY, WHICH COULD RESULT IN TRUCK DISABLEMENT,POSSIBLE LOSS OF ACCELERATOR CONTROL AND AN ACCIDENT.
Remedy: REPLACE REAR ENGINE SUPPORTS AS NECESSARY.
THERE MAY BE INSUFFICIENT WELD WHERE THE STEP IS WELDED TO THE FUEL TANK.
5,098 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: WELD CRACKS COULD EVENTUALLY CAUSE STEPS TO DISENGAGEAND POSSIBLY INJURE PERSONS ENTERING OR LEAVING THE TRUCK.
Remedy: REPLACE FUEL TANK STEPS WITH CRACKS; MODIFY OTHERS TO PREVENT STEP FROM SEPARATING FROM THE TANK.
FASTENERS THAT HOLD THE REAR WHEEL TO THE HUB AND DRUM ASSEMBLY MAY BE IMPROPERLY TORQUED.
19 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: AN UNDERTORQUED FASTENER WILL LOOSEN UP AND CAN RESULT INWHEEL SEPARATION, LOSS OF CONTROL, AND AN ACCIDENT.
Remedy: PROPERLY TORQUE REAR WHEEL SPACE FASTENERS.
THE UNDERSIZED WELD ON THE REAR SUSPENSION BRACKETRY ATTACHMENT CAN CAUSE BRACKET FAILURE.
129 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: BRACKET FAILURE CAN ALLOW THE SPRING ASSEMBLY TO BERELEASED ONTO THE ROADWAY, POSSIBLY RESULTING IN LOSS OF CONTROL AND ANACCIDENT.
Remedy: REPLACE ANY HOUSINGS THAT HAVE SINGLE PASS (UNDERSIZED) WELDS ON THE BRACKETRY ATTACHMENT.
SEAT TETHER BELTS MAY NOT HAVE BEEN ADJUSTED DURING ASSEMBLY.
11,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: DURING AN IMPACT, DRIVER AND/OR RIDER CAN MOVE FORWARDAND POSSIBLY STRIKE THE WINDSHIELD, EVEN WHEN WEARING A SEAT BELT.
Remedy: ADJUST SEAT TETHER BELT IF NECESSARY.
SOME AIR BRAKE HOSE ASSEMBLIES MAY NOT COMPLY WITH BURST STRENGTH REQUIREMENTS OF FMVSS 106.
24,106 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: VEHICLES DO NOT COMPLY WITH STANDARD.
Remedy: REPLACE SUSPECT HOSE ASSEMBLIES.
SOME OF THE NUTS/BOLTS USED TO FASTEN THE STEERING PITMAN ARM MAY LOOSEN.
6,400 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS WOULD ALLOW THE PITMAN ARM TO COME OFF THE STEERINGGEAR SECTOR SHAFT AND RESULT IN IMMEDIATE LOSS OF STEERING CONTROL AND A VEHICLECRASH COULD OCCUR.
Remedy: RETORQUE NUTS/BOLTS WHERE NECESSARY.
POWER STEERING PUMPS MAY HAVE A RIDGE INSIDE THE ALUMINUM HOUSING WHICH COULD DETACH ITSELF FROM THE HOUSING AND BECOME WEDGED INSIDE THE RELIEF VALVE, KEEPING IT OPEN.
294 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS COULD RESULT IN SUDDEN LOSS OF ASSISTANCE TO THESTEERING WITH THE POTENTIAL FOR AN ACCIDENT.
Remedy: REPLACE POWER STEERING PUMP.
COMPRESSION OF FRONT SPRINGS COULD INTERFERE WITH THE 90 DEGREE CROSSOVER FITTINGS ON THE BOTTOM OF THE GEARS.
140 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF ONE OF THE FITTINGS BREAK, THE HYDRAULIC FLUID ISLOST, RESULTING IN LOSS OF POWER STEERING AND POSSIBLY A CRASH.
Remedy: REPLACE CENTER PORT STEERING GEAR CYLINDER HEADS WITH NEW SIDE PORT CYLINDER HEADS. ALSO, INSTALL THICKER BUMPER STOPS TO ELIMINATE SPRING TO GEAR CONTACT.
CLAMP PLATES USED BETWEEN THE DRIVE SHAFT AND CARRIER YOKES MAY CRACK AND COULD BREAK DUE TO IMPROPER HEAT TREATMENT.
203 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF CLAMP PLATE BREAKS, YOKE WOULD FLY OFF AT DETACHEDPOINT AND COULD INJURY ANYONE STRUCK BY FLYING FRAGMENTS. ALSO, THE DETACHEDINNER SHAFT COULD INTERFERE WITH THE BRAKE SYSTEM AIR SUPPLY HOSES AND TRACTORTIRES, WHICH COULD RESULT IN LOSS OF TRUCK CONTROL AND AN ACCIDENT.
Remedy: INSTALL NEW CLAMPING PLATES AND CAPSCREWS IN ALL LOCATIONS AS NEEDED.
THE BUCKLE ASSEMBLY COULD HAVE A LARGE PAWL TO BASE CLEARANCE WHICH MAY NOT ALLOW THE PROPER ENGAGEMENT OF THE CONNECTOR.
18,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE PAWL TO BASE CLEARANCE PRECLUDES THE INABILITY TOENGAGE THE SEAT BELT CONNECTOR.
Remedy: INSPECT AND REPLACE ALL BUCKLE ASSEMBLIES FOUND WITH IMPROPER CLEARANCE.
THE STEERING SHAFT SPLINE ENGAGEMENT IS ONLY .52, THE RECOMMENDED ENGAGEMENT IS 2 INCHES.
259 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: UNDER IMPACTS SUCH AS ROAD POTHOLES, IT COULD RESULT INSHAFT DISENGAGEMENT. THE DRIVER WOULD IMMEDIATELY LOSE STEERING CONTROLWITHOUT WARNING AND VEHICLE CRASH COULD OCCUR.
Remedy: REPLACE SHAFTS THAT MEASURE UNDER THE MINIMUM ENGAGEMENT DIMENSIONS WITH A LONGER SHAFT.
SEAT BELT MOUNTING BOLTS ON THE INBOARD SIDE OF RIDERS SEAT MAY HAVE BEEN UNDERTORQUED.
127 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: BOLTS MAY LOOSEN AND EVENTUALLY SEPARATION OF THE BELTASSEMBLY FOR THE MOUNTING BRACKET COULD OCCUR. IN AN SUDDEN PANIC STOP THEPASSENGER WOULD NOT BE RESTRAINT AND POSSIBLE INJURY WOULD RESULT.
Remedy: INSPECT BOLTS AND PROPERLY TORQUE.
SOME DEADMAN PEDALS WERE ASSEMBLED WITH INCORRECT BOLTS WHICH COULD CAUSE A MALFUNCTION WITHOUT ANYONE STEPPING ON THE PEDAL.
48 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF MALFUNCTION OCCURS WHILE OPERATOR IS AT PLATFORMCONTROL, SUDDEN STOPPING OF MOTION AND THEN SUDDEN CONTINUATION OF MOVEMENTCOULD ENDANGER OCCUPANTS ON THE PLATFORM.
Remedy: REPLACE INCORRECT BOLTS.
SOME OF BOLTS FASTENING REAR DRIVESHAFT ON REAR AXLE FLANGE MAY LOOSEN CAUSING DRIVESHAFT DISASSEMBLY.
3,620 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: DRIVESHAFT COULD BREAK AWAY WITHOUT PRIOR WARNING ANDRESULT IN A CRASH OR INJURY FROM LOOSENED DRIVESHAFT OR BOLTS.
Remedy: REPLACE BOLTS ON REAR AXLE.
THE PITMAN ARM TO DRAG LINK ANGLE IS OUT OF PHASE.
29 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: UNDER CERTAIN CONDITIONS, STEERING LINKAGE COULD GO INTOA TOGGLE CONDITION RESULTING IN A SLOW WHEEL RETURN AND IMPAIRED STEERINGCONTROL, CREATING THE POTENTIAL FOR A VEHICLE CRASH WITHOUT PRIOR WARNING.
Remedy: REPLACE MISMARKED PITMAN ARM.
CROSS STEERING LEVERS MAY BE IMPROPERLY HEAT TREATED AND SUBJECT TO FAIL DURING NORMAL OPERATION.
323 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: SUCH FAILURE COULD CAUSE LOSS OF TRUCK CONTROL WITHOUTPRIOR WARNING AND RESULT IN A CRASH.
Remedy: INSTALL NEW, PROPERLY HEAT TREATED STEERING LEVER.
ON RIGHT HAND STEERING ARM, KEYWAY MAY BE IN THE WRONG LOCATION CAUSING A TOGGLE CONDITION TO OCCUR UNDER CERTAIN CONDITIONS.
200 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS COULD RESULT IN SLOW STEERING RETURN WITHOUT PRIORWARNING WHICH WOULD AFFECT STEERING CONTROL AND CREATE THE POTENTIAL FOR ACRASH.
Remedy: REPLACE INCORRECT STEERING ARM.
MINIMUM AIR RESERVOIR VOLUME CAPACITY IS LESS THAN REQUIRED BY FMVSS NO. 121.
1,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: FAILURE TO MEET REQUIREMENTS OF FMVSS NO. 121.
Remedy: RETROFIT ADDITIONAL RESERVOIR CAPACITY TO ENSURE FULL COMPLIANCE WITH FMVSS NO. 121.
CROSSMEMBER CAN BE OVERSTRESSED AND CAN FAIL, ALLOWING THE BROKEN CROSSMEMBER TO PROTUDE ABOVE THE TOP OF THE FRAME AND INTERFERE WITH CHASSIS COMPONENTS.
5,235 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: TRAILER HANDLING COULD BE AFFECTED DURING TURNINGMANEUVERS WHICH COULD RESULT IN LOSS OF TRUCK CONTROL AND A CRASH. ALSO, ACOMPLETELY SEPARATED CROSSMEMBER COULD AFFECT HEIGHT OF SUSPENSION AIR SPRINGSAND THE RESULTING LEAN COULD RESULT IN LOSS OF CONTROL.
Remedy: INSTALLATION OF A BOLTED DOUBLE PLATE TYPE CROSSMEMBER TO REPLACE THE STANDARD CHANNEL TYPE CROSSMEMBER.
THE DRAG LINK TO PITMAN ARM TOGGLE ANGLE MAY BE GREATER THAN DESIGN CRITERIA, AND MAY CAUSE THE STEERING TO BIND. CONSEQUENCE OF DEFECT: IF TRUCK NEGOTIATES EXTREME RIGHT HAND TURN THE LEFT FRONT WHEEL DROPS INTO A DEEP HOLE, STEERING RETURN WOULD BE SLOW, WITHOUT WARNING TO OPERATO...
200 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REPLACE LEFT HAND STEERING LEVER.
THE SEALANT USED ON THE INJECTION PUMP COULD PENETRATE THROUGH THE BUSHING AND GET BETWEEN THE THROTTLE SHAFT AND BUSHINGS CAUSING THE SHAFT TO BIND. CONSEQUENCE OF DEFECT: THROTTLE SHAFT SEIZURE MAY CAUSE THE ENGINE TO STAY ON FULL THROTTLE, AND...
830 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REPLACE BOTH BUSHINGS IN THE GOVERNOR HOUSING.
AN INCORRECT STEERING SHAFT RETAINING NUT IS INSTALLED ON THE SHAFT AND CAN LOOSEN CAUSING STEERING PLAY. CONSEQUENCE OF DEFECTS: IF NUT IS NOT REPLACED, STEERING WHEEL DISENGAGEMENT COULD OCCUR CAUSING LOSS OF STEERING CONTROL AND POSSIBLY A VEHICLE CRASH.
180 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSTALL PROPER NUT TO ENSURE STEERING WHEEL RETENTION.
STEERING COLUMN BOOT ATTACHED TO EXTERIOR OF FIREWALL COULD BE DEFORMED BY THE SOUND INSULATION PLACED ON THE FIREWALL AND CAUSES INTERFERENCE WITH THE STEERING SHAFT U-JOINT BOLT. CONSEQUENCE OF DEFECT: AN IMPROPERLY FITTED OR DEFORMED BOOT COULD GET CAUGHT ON BOLT WHICH RETA...
1,287 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: MODIFY CAB FRONT PANEL SOUND PROOFING AND CHANGE POSITION OF STEERING COLUMN BOOT.
FRONT STEERING KNUCKLE THRUST BEARING MAY SHATTER INTO PIECES DUE TO IMPROPER HEAT TREATMENT. CONSEQUENCE OF DEFECT: FAILURE OF THE BEARING MAY AFFECT STEERING CONTROL. IF BEARING DISINTEGRATES, IT WOULD RESULT IN INCREASE STEERING DRAG AND/OR CAUSE STEERING LOCK UP W...
50,100 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REPLACE DEFECTIVE THRUST BEARINGS.
THE SPRING EYE BOLT WAS NOT TORQUED PROPERLY AND COULD FAIL DUE TO THE LOOSE FIT WITHIN THE SPRING EYE BUSHING/HANGER BRACKET. CONSEQUENCE OF DEFECT: THE SPRING COULD FALL ONTO THE ROAD SURFACE, WITHOUT WARNING TO THE DRIVER, AND A VEHICLE CRASH COULD OCCUR DUE TO THE SUDDEN DRAG OF THE SPRING.
11,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: NOT AVAILABLE AT THIS TIME. IN THE INTERIM THE TORQUE OF THE SPRING EYE BOLT WILL BE CHECKED.
LEFT OR RIGHT CAB STEP MAY CRACK IN ITS WELDED AREA DUE TO FLEXING OF THE STEP DURING ENTERING AND EXITING. CONSEQUENCE OF DEFECT: AS THE CRACKS EXTEND, THE TUBULAR STEP COULD PARTIALLY COLLAPSE AND BREAK WITHOUT WARNING TO THE USER, AND COULD RESULT IN PERSONAL INJURIES.
7,000 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSTALL A REINFORCEMENT BRACE IF NO CRACKS ARE FOUND. IN ADDITION, REPLACE STEP IF CRACKS ARE PRESENT.
THE ACCELERATOR ROD HOLE CLEARANCE IS NOT ADEQUATE AND CAN CAUSE THE ACCELERATOR LINKAGE TO BIND. CONSEQUENCE OF DEFECT: IF BINDING OCCURS WHILE IN A FULL THROTTLE POSITION, ACCELERATOR CONTROL WOULD BE LOST WITHOUT WARNING AND AN ACCIDENT COULD OCCUR.
26,760 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: ENLARGE THE ACCELERATOR ROD HOLE TO ELIMINATE INTERFERENCE WITHIN ACCELERATOR LINKAGE.
INCORRECT INNER WHEEL BEARINGS WERE INSTALLED IN THE REAR AXLES WHICH WEARS A GROOVE IN THE SPINDLE DUE TO A POOR FIT. CONSEQUENCE OF DEFECT: A DEEP GROOVE COULD CAUSE THE AXLE HOUSING TO BREAK AND RESULT IN A VEHICLE CRASH WITHOUT PRIOR WARNING.
484 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REPLACE INNER WHEEL BEARING WITH CORRECT BEARING. ALSO, IF A GROOVE IS PRESENT, REMOVE THE GROOVE AND ASSURE THAT NO CRACKS ARE PRESENT. REPLACE HOUSING IF CRACKED.
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 DEF...
3,308 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSTALL A REDESIGNED VALVE SUPPORT BRACKET.
THE SPLINED STEERING SHAFT MAY NOT BE SUFFICIENTLY ENGAGED AS DESIGNED DUE TO INACCURATE DRILLING OF THE HOLES IN THE FRAME TO WHICH THE CAB FRONT MOUNT MEMBER IS BOLTED. UNDER CERTAIN CONDITIONS THE STEERING SHAFT MAY DISENGAGE. CONSEQUENCE OF DEF...
143 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REPLACE SHAFTS WHICH MEASURE UNDER THE MINIMUM ENGAGEMENT DIMENSIONS WITH LONGER SHAFT.
THE DUAL DOUBLE CHECK VALVE MAY NOT RELEASE THE PROPER AIR VOLUME TO THE BRAKE SYSTEM, CAUSING A SLIGHT TIMING DELAY BETWEEN THE TRACTOR AND THE TRAILER BRAKE SYSTEM. CONSEQUENCES OF DEFECT: IF THE BRAKES ARE SUDDENLY APPLIED, THE TRAILER COULD JACKKNIFE WITHOUT ...
5,020 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSTALL TWO NEW SLEEVES IN THE DUAL DOUBLE CHECK VALVE WHICH WILL INCREASE AIR FLOW.
THE DRAG LINKS MAY HAVE BEEN INSTALLED INCORRECTLY ALLOWING DRAG LINK CLAMP BOLT TO AXLE BEAM INTERFERENCE. CONSEQUENCE OF DEFECT: DURING A TURNING MANEUVER, INCREASED STEERING EFFORT OR COMPLETE LOCKUP OF STEERING COULD OCCUR WITHOUT WARNING. THIS COULD RESULT IN LOSS OF TRUCK CONT...
52 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: ASSURE THAT DRAG LINKS ARE INSTALLED TO CORRECT INTERFERENCE CONDITION.
THE FLIP OUT STEP CLEVIS ON THE BUMPER MAY FAIL AND BREAK UNDER THE WEIGHT OF THE PERSON STANDING ON THE STEP TO SERVICE THE FRONT AREA OF THE VEHICLE. CONSEQUENCE OF DEFECT: THIS SUDDEN BREAK WILL CAUSE THE PERSON STANDING ON THE STEP TO FALL, WITH...
7,500 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: REMOVE THE STEP CLEVIS AND REPLACE WITH A NEW IMPROVED CLEVIS.
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.
2,198 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEFECT WILL BE CORRECTED BY THE ADDITION OF A SPACER BETWEEN THE SPRING AND THE CENTER BOLT HEAD TO INCREASE THE EFFECTIVE HEAD LENGTH. A LONGER CENTER BOLT WILL ALSO BE INSTALLED FOR POSITIVE RETENTION.
DUE TO IMPROPER AND INADEQUATE WELDING PRACTICES, THE FIFTH WHEEL ON THE INVOLVED VEHICLES IS DEFECTIVE. FRAME MOUNTED SUPPORTS MAY HAVE INCOMPLETE OR POOR QUALITY WELDS. THE WELDS COULD SUBSEQUENTLY FAIL ALLOWING SEPARATION OF THE TRACTOR FROM THE TRAILER.
64 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND REMOVE THE FIFTH WHEEL AND REWELD THE MOUNTING ANGLES AT NO CHARGE TO THE OWNER.
THE DOOR LATCHES MAY BE DEFECTIVE BECAUSE A PAWL SPRING WAS NOT MANUFACTURED TO SPECIFICATIONS. THE PAWL SPRING DOES NOT CREATE PROPER TENSION ON THE PAWL, (A PART OF THE DOOR LATCH MECHANISM). THIS CONSTITUTES A NON-COMPLIANCE WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 206, "DOOR LATCHES AND DOOR RETENTION COMPONENTS".
1,300 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND REPLACE DOOR LATCHES, IF NECESSARY.
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.
850 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEFECTIVE STRAPS WILL BE REPLACED WITH VINYL COATED STEEL STRAPS.
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.
3,421 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE AXLE HOUSING WILL BE INSPECTED AND REPLACED, IF NECESSARY. THE SPRING SEATS WILL ALSO BE REPLACED.
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.
850 vehicles affected
Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE CARBON STEEL SPRING WILL BE REPLACED WITH A STAINLESS STEEL ONE.