Vehicle Safety Recalls

Search 30,039 NHTSA recall campaigns covering every vehicle sold in the United States since 1966.

30,039 Recall Campaigns
24,137 Vehicle Models
233 Vehicle Makes
1966–2026 Year Range

What is a vehicle safety recall?

A vehicle safety recall is issued when a manufacturer or the National Highway Traffic Safety Administration (NHTSA) determines that a defect in a motor vehicle creates an unreasonable risk to safety, or that the vehicle fails to meet a federal motor vehicle safety standard. Once a recall is issued, the manufacturer is required by federal law (49 U.S.C. § 30120) to repair, replace, or refund the vehicle without charge to the owner. The repair obligation lasts at least 15 years from the date the vehicle was first sold, regardless of mileage, ownership history, or warranty status.

The list below contains every recall campaign in NHTSA's official database — over 30,039 campaigns covering tens of millions of individual vehicles dating back to 1966. Each entry includes the official NHTSA campaign number (used to schedule the repair at any franchised dealer), the affected component, the defect description, the consequence of the failure, and the manufacturer's remedy. You can filter by make, model year, or keyword. To check whether a specific vehicle has an open recall, use the VIN lookup; to read every recall ever issued for a particular brand, use browse by make.

How to read a recall entry

Each recall card on this page surfaces the four pieces of information that matter most to vehicle owners:

  • Component. The system or part affected by the defect — brakes, airbags, fuel system, electrical, etc. NHTSA uses a standardized component taxonomy.
  • Summary. Plain-English description of the defect and what is expected to fail.
  • Consequence. The actual safety risk — fire, loss of brakes, airbag rupture, sudden stalling. This is the most important field for understanding severity.
  • Remedy. What the dealer will do to fix the vehicle. This tells you how long the repair will take and whether parts are likely to be available.

A small share of recalls — typically less than 3 percent — also carry severity flags such as "Park Outside" or "Do Not Drive." When a recall has one of these flags, NHTSA is recommending that owners take additional precautions until the repair is performed. Park Outside means the defect can ignite a fire even when the vehicle is parked; Do Not Drive means the failure mode is severe enough that NHTSA cannot recommend continuing to operate the vehicle. We have a deeper explainer at Understanding Recall Severity.

Where this data comes from

This page is built on NHTSA's recall flat-file database, which we re-import on the first day of every month. Each individual recall record is sourced directly from NHTSA's public files — we don't paraphrase, summarize, or alter the official descriptions. The summaries you see are the manufacturer's own filings as submitted to NHTSA, lightly reformatted for readability. For the most current status of any specific VIN, the authoritative source is nhtsa.gov/recalls; this page is most useful for browsing patterns across models and years rather than checking the status of one specific car.

Read more from our blog

How to Check If Your Car Has an Open Recall › What to Do If Your Car Is Recalled › Why Recall Repairs Are Always Free › Used Car: 7 Recall Checks to Run First › The Takata Airbag Recall: Full Story › All Articles ›
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Showing 429 recalls for MACK

84V033000 Mar 22, 1984
MACK DM SERIES (1983) — STEERING: STEERING WHEEL/HANDLE BAR
IMPROPER STEERING CLAMP BOLTS AND TORQUE APPLIED DURING INSTALLATION. THE BOLT COULD FAIL, ALLOWING THE STEERING YOKE TO BECOME LOOSE.
4,393 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSPECTION AND, IF NECESSARY, INSTALLATION OF PROPER STEERING SHAFT CLAMP BOLTS TIGHTENED TO SPECIFICATIONS.
83V121000 Nov 18, 1983
MACK FWS (1978) — STEERING:GEAR BOX:SHAFT PITMAN
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.
1,377 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND PROPERLY TIGHTEN THE PITMAN ARM RETAINING SCREWS.
83V101000 Sep 27, 1983
MACK MS200 (1982) — STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
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.
1,486 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: ALL RECALLED VEHICLES WILL HAVE BELLVILLE TYPE LOCKWASHERS AT STEERING GEAR HOUSING ATTACH POINTS REPLACED WITH STANDARD SPLIT-TYPE LOCKWASHERS.
83V100000 Sep 27, 1983
MACK MH (1982) — STEERING: STEERING WHEEL/HANDLE BAR
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.
507 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEFECTIVE STEERING WHEELS WILL BE REPLACED AT NO CHARGE TO OWNER.
83V102000 Sep 27, 1983
MACK MS300T (1981) — POWER TRAIN:MANUAL TRANSMISSION
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.
565 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: ALL AFFECTED PARTS WILL BE INSPECTED AND REPLACED, IF NECESSARY.
83V041000 Apr 14, 1983
MACK RWL (1980) — STEERING:GEAR BOX:SHAFT PITMAN
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.
1,515 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSTALL A NEW PITMAN ARM BALL ASSEMBLY AT NO CHARGE.
83V037000 Apr 5, 1983
MACK CF (1976) — STEERING: STEERING WHEEL/HANDLE BAR
ON THE INVOLVED VEHICLES THE FLOORBOARD OPENING AND THE STEERING COLUMN SEAL BRACKET DO NOT HAVE SUFFICIENT CLEARANCE TO ALLOW THE SHAFT TO TURN FREELY. THIS CAUSES THE PINCH BOLT TO BIND OR LOCK AGAINST THE SEAL BRACKET.
1,455 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE HOLE IN THE FLOORBOARD WILL BE ENLARGED TO ALLOW SUFFICIENT CLEARANCE OF THE STEERING COLUMN U-JOINT PINCH BOLT, AND A NEW BRACKET AND LAMP WILL BE INSTALLED AT NO CHARGE TO OWNER.
82V131000 Dec 21, 1982
MACK MC600 (1979) — ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
DUE TO THE HIGH STRAIN WITHIN THE FAN BLADES OF THE COOLING FAN, CRACKS MAY DEVELOP IN THE FAN. THESE CRACKS MAY LEAD TO COMPLETE FRACTURE OF THE COOLING FAN, PROPELLING THE FAN AND PIECES OF THE FAN BLADES OUTSIDE THE FAN SHROUD.
5,050 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSTALL COOLING FANS WITH IMPROVED FAN BLADES ON ALL AFFECTED VEHICLES FREE OF CHARGE TO OWNER.
82V054000 May 24, 1982
MACK MS200P (1979) — EXTERIOR LIGHTING:HEADLIGHTS
THE CIRCUIT WIRING ON THESE VEHICLES IS ARRANGED SO THAT A SHORT CIRCUIT IN THE REAR TAILLIGHTS WILL ALSO RESULT IN LOSS OF POWER TO THE HEADLAMPS. FOR SAFETY REASONS THE LIGHTING SYSTEM WIRING SHOULD BE INDEPENDENT.
5,700 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: VEHICLES WILL HAVE AN AUTOMATIC RESET CIRCUIT BREAKER INSTALLED TO ENSURE CONTINUED HEADLAMP ILLUMINATION IN THE EVENT OF A SHORT IN OTHER LIGHTING SYSTEMS.
82V019000 Mar 2, 1982
MACK U SERIES (1980) — STEERING: STEERING WHEEL/HANDLE BAR
CERTAIN VEHICLES MAY BE SUBJECT TO STEERING SHAFT SEPARATION DUE TO LOOSE SET SCREWS IN THE DASH SHEET BEARING WHICH MAY ALLOW THE SHAFT TO MOVE.
22 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSPECT AND MODIFY THE STEERING SHAFT BY PROVIDING A GREATER SLIP LENGTH IN THE STEERING DRIVE SHAFT TO ELIMINATE SLIP JOINT SEPARATION.
81V153000 Dec 29, 1981
MACK R SERIES (1977) — EXTERIOR LIGHTING
THE RIGHT HAND CLEARANCE LAMP IS OBSCURED, FROM CERTAIN ANGLES OF VISION, BY THE IN-LINE PRECLEANER AIR CLEANER CAP. THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT".
209 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL REPLACE THE AIR CLEANER WITH ONE OF ACCEPTABLE HEIGHT.
81V155000 Dec 29, 1981
MACK MC SERIES (1981) — STEERING:GEAR BOX:SHAFT PITMAN
THE PITMAN ARM RETAINING BOLT MAY NOT HAVE BEEN TIGHTENED TO THE REQUIRED SPECIFICATIONS DUE TO A DESIGN CHANGE. INADEQUATE RETENTION OF THE BOLT TO THE OUTPUT SHAFT COULD ALLOW THE PITMAN ARM TO LOOSEN.
225 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, RETORQUE THE RETAINING BOLT TO PROPER SPECIFICATIONS AT NO CHARGE.
81V154000 Dec 29, 1981
MACK CF (1976) — STEERING: STEERING WHEEL/HANDLE BAR
THE FLOORBOARD OPENING AND THE STEERING COLUMN SEAL BRACKET MAY NOT ALLOW SUFFICIENT CLEARANCE FOR THE SHAFT TO TURN FREELY IN THE CENTER OF THE BRACKET/SEAL. THE PINCH BOLT IN THE COLUMN YOKE MAY BIND OR LOCK THE COLUMN AGAINST THE BRACKET, ALLOWING LITTLE OR NO WHEEL RETURN.
826 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL ENLARGE THE HOLE IN THE FLOORBOARD TO PROVIDE CLEARANCE FOR THE STEERING COLUMN U-JOINT PINCH BOLT. A NEW BRACKET AND CLAMP WILL ALSO BE INSTALLED WITHOUT CHARGE TO OWNER.
81V157000 Dec 29, 1981
MACK MS200P (1979) — VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR
WHEN THE IGNITION KEY IS IN THE "ON" POSITION AND THE HEATER IS OPERATING AT THE "LOW" OR "MEDIUM" SETTING, THE HEATER SWITCH WIRING WILL OVERLOAD IN THE EVENT THE HEATER MOTOR SEIZES.
4,920 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: A SPEED VARIATION RESISTANCE UNIT AND AN ELECTRIC MOTOR MOISTURE PROTECTION CAP WILL BE INSTALLED WITHOUT CHARGE.
81V089000 Jul 14, 1981
MACK MS300P (1980) — POWER TRAIN:DRIVELINE
HOLES DRILLED IN THE REAR AXLE YOKES TO BALANCE THEM COULD CAUSE A FAILURE OF THE YOKE.
500 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: VEHICLES WILL BE INSPECTED AND ALL DEFECTIVE YOKES WILL BE REPLACED WITH YOKES WITHOUT HOLES.
81V086000 Jul 8, 1981
MACK R600 (1981) — STEERING:LINKAGES
THE INVOLVED TRUCKS HAVE PITMAN ARMS WITH TIMING MARKS AND SERRATIONS LOCATED 8 DEGREES OUT OF PROPER ALIGNMENT. WHEN THE CHASSIS IS RAISED TO THE MAXIMUM CONDITION WITH THE WHEELS SUSPENDED OR DROPPED INTO A DEEP HOLE, THE PITMAN ARM AND DRAG LINK CAN GO INTO TOGGLE POSITION.
100 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: UPON INSPECTION, ALL DEFECTIVE PITMAN ARMS WILL BE REPLACED WITH PROPERLY TIMED ARMS.
81V088000 Jul 8, 1981
MACK F SERIES (1979) — SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE
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.
10,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.
81V085000 Jul 8, 1981
MACK DM SERIES (1980) — SEAT BELTS
THE INVOLVED TRUCKS DO NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, "OCCUPANT CRASH PROTECTION", IN THAT THE EXTENDED RIDER"S SEAT WAS NOT EQUIPPED WITH A SEAT BELT AS REQUIRED.
22 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
81V083000 Jul 7, 1981
MACK MC SERIES (1978) — STRUCTURE:BODY
THE RIGHT HAND FRONT CANOPY CAB MOUNTING BRACKET INTERFERES WITH THE RIGHT HAND BRAKE CHAMBER ON THE STEERING AXLE WHEN IN A CERTAIN DEGREE TURN AND SEVERE BUMPING IS PRESENT.
180 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE FRONT CANOPY CAB MOUNTING BRACKET WILL BE MODIFIED TO ALLOW FOR CLEARANCE OF THE RIGHT HAND FRONT BRAKE CHAMBER, WITHOUT CHARGE TO OWNER.
81V032000 Mar 18, 1981
MACK MS300T (1981) — EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH
ON CERTAIN VEHICLES, THE SEMI-TRAILER STOP LIGHTS MAY NOT ACTIVATE WHEN HAND CONTROL LEVER IS ACTIVATED.
150 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: AFTER INSPECTING BRAKE LIGHT SYSTEM, A SWITCH WILL BE INSTALLED WHICH WILL ACTIVATE THE TRAILER STOP LIGHT WHEN THE HAND CONTROL VALVE IS USED, IF NECESSARY.
80V162000 Dec 10, 1980
MACK R SERIES (1980) — STEERING: STEERING WHEEL/HANDLE BAR
THE WELD ON THE UPPER STEERING SHAFT WHERE THE FEMALE SPLINE CONNECTS TO THE TUBE ASSEMBLY MAY HAVE BEEN INCORRECTLY POSITIONED AND ACTUALLY MISSED THE SEAM.
1,524 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE AFFECTED SHAFT WITH ONE THAT HAS BEEN PROPERLY WELDED, AT NO CHARGE.
80V157000 Dec 2, 1980
MACK MS200P (1979) — VEHICLE SPEED CONTROL:SPRINGS
CHAFING MAY OCCUR BETWEEN THE THROTTLE RETURN SPRINGS AND THEIR MOUNTING BRACKETS AND CAN CAUSE THE HOOK END OF THE SPRING TO WEAR PREMATURELY AND EVENTUALLY BREAK.
1,992 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSTALL A SET OF REDESIGNED THROTTLE RETURN SPRINGS AND MOUNTING BRACKETS FOR IMPROVED SERVICE LIFE AT NO CHARGE TO OWNER.
80V053000 May 6, 1980
MACK F SERIES (1968) — STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
THE STEERING ARM MAY DEVELOP CRACKS DUE TO INSUFFICIENT FATIGUE LIFE IN THE MACHINE RADIUS OF THE TAPER AT THE STEERING KNUCKLE END.
219 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: INSTALL STEERING ARMS THAT HAVE BEEN MAGNA-FLUX INSPECTED FOR CRACKS AND SHOT PEENED FOR IMPROVED FATIGUE LIFE. THIS WILL BE DONE WITHOUT CHARGE.
80V054000 May 6, 1980
MACK R SERIES (1976) — STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
THE PREFABRICATED PINCH BOLT CLAMP AT THE LOWER STEERING SHAFT LOWER YOKE MAY NOT PERFORM ADEQUATELY WHEN TIGHTENED TO SPECIFICATIONS. THE CLAMP MAY THEN DEFORM AND LOSS OF CLAMPING FORCE AND STEERING SHAFT DISENGAGEMENT MAY RESULT.
109 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL RETROFIT WITH LOWER STEERING SHAFT LOWER YOKES THAT PROVIDE FOR INTEGRAL PINCH BOLT INSTALLATION IN PLACE OF PREVIOUS SEPARATELY FABRICATED CLAMP FOR THE PINCH BOLT.
80V052000 May 6, 1980
MACK MC SERIES (1979) — PARKING BRAKE:DRIVELINE:AIR
ON CERTAIN VEHICLES, THE KNOB THAT OPERATES THE TRACTOR PARK VALVE MAY BREAK OFF, RENDERING THE VALVE INOPERABLE.
9,666 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEFECTIVE KNOBS WILL BE REPLACED WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.
79V171000 Jul 12, 1979
MACK F (1979) — SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY
THE SPRING SEAT PLATE, LOCATED BETWEEN THE AXLE HOUSING AND THE SUSPENSION SPRINGS, MAY DEFORM DUE TO SPRING BENDING. AS A RESULT, THE CLAMPING FORCE IN THE ASSEMBLY MAY BE REDUCED. LOSS OF CLAMPING FORCE COULD CAUSE SPRING FAILURE AND THE AXLE WILL DISLOCATE. ALSO, THE TIRE COULD COME INTO CONTACT WITH THE SPRING.
1,706 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL REPLACE THE EXISTING SPRING SEAT WITH A NEWLY FABRICATED SEAT WHICH IS WELDED TO THE HOUSING. AN IMPROVED SPRING CLAMPING PLATE AND NEW SPRINGS WILL ALSO BE INSTALLED WITHOUT CHARGE.
79V164000 Jul 9, 1979
MACK RL (1979) — STEERING: STEERING WHEEL/HANDLE BAR
THE FLANGE HEAD PINCH BOLTS USED IN THE YOKES OF THE STEERING SHAFT ASSEMBLIES MAY HAVE BEEN OVERSTRESSED DUE TO THE BOLTS NOT BEING TIGHTENED TO SPECIFICATIONS. AS A RESULT, THE PINCH BOLTS COULD BREAK WHILE IN SERVICE.
4,640 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: FLANGE HEAD PINCH BOLTS WILL BE REPLACED WITH STANDARD GRADE 8 FASTENERS WITHOUT CHARGE TO OWNER.
79V165000 Jul 9, 1979
MACK R (1979) — STEERING: STEERING WHEEL/HANDLE BAR
THE PINCH BOLT HOLE CENTER TO STEERING GEAR INPUT SHAFT ON THE LOWER YOKE DIMENSION EXCEEDS SPECIFICATIONS. IF THE PINCH BOLT BECOMES LOOSE, IT WILL NOT ENGAGE THE STEERING GEAR INPUT SHAFT NOTCH AND THE SHAFT COULD SLIP OFF.
80 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE PROPER STEERING GEAR INPUT SHAFT YOKE WILL BE INSTALLED WITHOUT CHARGE TO OWNER.
79V137000 Jun 1, 1979
MACK RWL (1977) — STEERING:LINKAGES
THE PITMAN ARM RETAINING NUT MAY NOT HAVE BEEN TORQUED TO MANUFACTURER SPECIFICATIONS. THIS COULD RESULT IN INADEQUATE RETENTION OF THE NUT AT THE OUTPUT SHAFT, ALLOWING THE PITMAN ARM TO BECOME LOOSE.
6,673 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSPECT AND RETORQUE PITMAN ARM, IF NECESSARY, AT NO COST TO OWNER.
79V133000 May 31, 1979
MACK DM (1977) — ENGINE AND ENGINE COOLING:ENGINE
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...
23,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSTALL A SHIELD FOR THE HEADS OF THE FOUR CAPSCREWS, ALONG WITH STRONGER SAE 8 GRADE 8 CAPSCREWS, IF NECESSARY, AT NO COST TO OWNER.
79V130000 May 30, 1979
MACK RWL (1978) — STEERING: STEERING WHEEL/HANDLE BAR
IT HAS BEEN DETERMINED THAT TWO SCREWS THAT ARE PART OF THE BEARING ASSEMBLY LOCATED AT THE CAB DASH SHEET MAY NOT HAVE BEEN TIGHTENED PROPERLY. AS A RESULT, THE UPPER STEERING SHAFT MAY BE FREE TO "FLOAT" THROUGHOUT MUCH OF ITS LENGTH WHICH MAY RESULT IN INADEQUATE ENGAGEMENT IN THE SLIP SPLINES OF THE LOWER STEERING SHAFT. AXLE ARTICULATION COULD RESULT IN DISENGAGEMENT OF THE LOWER STEERING SHA...
2,187 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSTALL A SLEEVE BETWEEN THE DASH SHEET BEARING AND THE UPPER STEERING SHAFT LOWER YOKE TO ASSURE POSITIVE UPPER STEERING SHAFT LOCATION.
79V134000 May 30, 1979
MACK DM (1974) — STEERING: STEERING WHEEL/HANDLE BAR
IN THE INVOLVED TRUCKS IT IS POSSIBLE THE ADJUSTABLE STEERING COLUMN REAR MOUNTING BRACKET COULD FAIL, ALLOWING STEERING WHEEL ASSEMBLY TO FALL DOWN ONTO THE OPERATOR"S LAP.
64,150 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSTALL AN ADDITIONAL BRACKET IN THIS AREA TO PREVENT THE STEERING WHEEL FROM DISLOCATING IN THE EVENT OF A BRACKET FAILURE.
79V082000 Apr 3, 1979
MACK DM (1977) — STEERING: STEERING WHEEL/HANDLE BAR
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.
12,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: VEHICLES WILL BE INSPECTED AND, IF NECESSARY, THE CORRECT FASTENERS WILL BE INSTALLED AT NO CHARGE TO OWNER.
79V018000 Jan 12, 1979
MACK F (1978) — SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET
THE STEEL BRACKETS ON THE SUSPENSION BEAM WERE FOUND TO BE DEFICIENT DUE TO EXCESSIVE SHRINKAGE AND LOW MECHANICAL PROPERTIES. FAILURE OF ONE OR BOTH OF THESE BRACKETS COULD CAUSE A SEPARATION OF THE AXLE HOUSING FROM THE SUSPENSION.
17 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ANY SUSPECT BOGIE SPRING INSULATOR CAPS WITH NEW CAPS MEETING THE PROPER SPECIFICATIONS AT NO COST TO OWNER.
79V017000 Jan 12, 1979
MACK DM (1977) — SUSPENSION:MULTIPLE AXLE
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.
4,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ANY OF THE SPRING INSULATOR CAPS FOUND TO BE DEFECTIVE. THIS WILL BE DONE AT NO COST TO OWNER.
79V014000 Jan 9, 1979
MACK MC (1978) — VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE
A DEFICIENCY IN THE ROUTING OF THE HEATER DUCT HOSE COULD ALLOW THE HOSE TO REST AGAINST A TERMINAL POST OF THE ACCESSORY RELAY. VIBRATION WILL EVENTUALLY CAUSE THE TERMINAL POST TO PENETRATE THE HOSE FABRIC AND SHORT CIRCUIT THE WIRE REINFORCEMENT AND OVERLOAD THE CIRCUIT.
358 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL REPLACE THE PORTION OF THE EXISTING HOSE THAT IS CLOSEST TO THE ACCESSORY RELAY WITH AN ALL-RUBBER HOSE.
78V222000 Oct 11, 1978
MACK RL (1977) — ELECTRICAL SYSTEM:WIRING
A SHORT CIRCUIT COULD OCCUR DUE TO CHAFING OR WIRE DISCONNECTION IN THE BOX.
161 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE WIRING IN THE SLEEPER BOX WILL BE CORRECTED, FREE OF CHARGE.
78V210000 Oct 3, 1978
MACK DM (1977) — SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)
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".
19,370 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSTALL NEW WHEEL SPEED SENSORS THAT INCORPORATE IMPROVED WIRING AND THE PRESENT BOGIE ANTI-WHEEL LOCK SYSTEM WILL BE CHANGED TO AN AXLE-TO-AXLE SYSTEM FOR IMPROVED RELIABILITY.
78V171000 Aug 8, 1978
MACK F (1971) — STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
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.
2,100 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE LEFT STEERING KNUCKLE WITH AN IMPROVED TYPE OF KNUCKLE.
78V170000 Aug 8, 1978
MACK RWL (1975) — ENGINE AND ENGINE COOLING:ENGINE
THE POSSIBILITY EXISTS THAT THE ALUMINUM ENGINE REAR SUPPORT BRACKETS MAY FAIL DUE TO METAL FATIGUE. THIS TYPE OF FAILURE WOULD ALLOW THE ENGINE AND TRANSMISSION ASSEMBLY TO DISLOCATE DOWNWARD. THIS WILL RESULT IN THROTTLE CONTROL LOSS WITH THE ENGINE OPERATING CONTINUOUSLY IN THE MID TO UPPER RANGE OF THE GOVERNED SPEED RANGE.
850 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALUMINUM SUPPORT BRACKETS WITH BRACKETS MADE FROM DUCTILE IRON FOR INCREASED STRENGTH.
78V172000 Aug 8, 1978
MACK CF (1974) — STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
THE EXISTING CROSS STEERING ARMS MAY HAVE INSUFFICIENT FATIGUE LIFE IN THE NECK AREA. THIS IS NEAR THE BOSS FOR THE CROSS STEERING TUBE BALL JOINT CONNECTION. FAILURE OF EITHER OF THE CROSS STEERING LEVERS COULD LEAD TO LOSS OF STEERING CONTROL OF THE RIGHT FRONT WHEEL.
13,800 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, INSTALL CROSS STEERING ARMS OF IMPROVED DESIGN AND GREATER STRENGTH.
78V169000 Aug 7, 1978
MACK RL600 (1977) — SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:HANGER,BRACKET
THE ALUMINUM FRONT SPRING BRACKET IS DEFECTIVE IN THAT IT MAY SHEAR AT THE POINT OF FRAME RAIL ATTACHMENT. THIS SHEARING COULD DISLOCATE THE STEERING AXLE.
1,300 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSTALL A NEW IMPROVED FRONT SPRING BRACKET MADE OF DUCTILE IRON, WITHOUT CHARGE TO OWNER.
78V068000 Apr 4, 1978
MACK DM (1974) — SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
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.
9,700 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.
78V028000 Feb 9, 1978
MACK HMM6856S (1973) — STEERING:LINKAGES
THE STEERING PITMAN ARM IS SUBJECT TO FAILURE AT THE AREA OF THE TRANSITION TO THE ARM OFFSET DUE TO HIGH STRESS CONCENTRATIONS.
100 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL REPLACE THE STEERING PITMAN ARM, STEERING GEAR OUTPUT SHAFT AND STEERING GEAR MOUNTING BRACKET.
78V029000 Feb 9, 1978
MACK ALL W MODELS (1974) — UNKNOWN OR OTHER
THE AIR RESERVOIR ON THE INVOLVED VEHICLES MAY HAVE A DESIGN DEFICIENCY. THE RESERVOIR MAY NOT BE STRONG ENOUGH TO WITHSTAND PRESSURES GENERATED DURING OPERATION.
268 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL REPLACE SUSPECT AIR RESERVOIRS WITHOUT CHARGE TO OWNERS.
78V031000 Feb 9, 1978
MACK F (1975) — SUSPENSION:MULTIPLE AXLE
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.
33,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL REPLACE THE DEFECTIVE BRACKET WITH A REDESIGNED VERSION.
78V032000 Feb 9, 1978
MACK DM (1976) — ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
THE SYNFLEX-TYPE OIL PRESSURE SIGNAL LINE MAY HAVE BEEN ROUTED TOO CLOSE TO THE EXHAUST MANIFOLD. EXCESSIVE HEAT MAY CAUSE THE LINE TO RUPTURE, AND OIL LEAKAGE MAY OCCUR.
459 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL REROUTE THE OIL PRESSURE SIGNAL LINE TO ELIMINATE POTENTIAL FIRE HAZARD, WITHOUT CHARGE TO OWNER.
78V030000 Feb 9, 1978
MACK RL (1975) — SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
A DESIGN DEFICIENCY EXISTS IN THE AIR DRYER PIPING IN THE AREA OF THE PRESSURE RELIEF VALVE AND COMPRESSOR GOVERNOR CONTROL LINK. MOISTURE IS PASSED AND BUILDS UP IN THIS RELIEF VALVE AND CONTROL LINE. IN FREEZING AMBIENT TEMPERATURES, THIS MOISTURE MAY FREEZE, ALLOWING THE CHASSIS AIR SYSTEM PRESSURE TO EXCEED 150 PSI. EXCESSIVE AIR SYSTEM PRESSURE CAN CAUSE SEPARATION OF AIR PIPING CONNECTIONS A...
400 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: THE DEALER WILL RELOCATE THE AIR SYSTEM COMPRESSOR GOVERNOR LINE AND PRESSURE RELIEF VALVE TO ELIMINATE MOISTURE ACCUMULATION.
77V205000 Nov 21, 1977
MACK DM (1977) — SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET
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.
7,400 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL REWELD THE INSULATOR SPRING BRACKET AT NO COST TO OWNER.
77V204000 Nov 21, 1977
MACK HMM (1976) — SEAT BELTS:FRONT:ANCHORAGE
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NOS. 207, "SEATING SYSTEMS", AND 210, "SEAT BELT ASSEMBLY ANCHORAGES". VEHICLES EQUIPPED WITH VIKING T-BAR SEATS HAVE THE SEAT BELT ANCHORAGE LOCATED UNDER THE SEAT. THE TETHER BELT RUPTURED WHEN SUBJECTED TO THE FORCES REQUIRED IN THE SAFETY TEST.
11 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: DEALER WILL RELOCATE THE TETHER BELT FLOOR ANCHORAGE TO CORRECT THE PROBLEM, WITHOUT CHARGE TO OWNER.