Mack Trucks Inc. (Mack) is recalling certain model year 2010-2014 CHU, CXU, and MRU, 2007 CT and CV, 2008-2014 GU, and 2011-2014 LEU, and TD trucks manufactured February 28, 2006, through November 8, 2013, and equipped Hamsar Electronic Flasher. The hazard warning lights may fail.
Consequence & remedy
Consequence: A failure of the hazard warning lights could reduce the trucks visibility, increasing the risk of a crash.
Remedy: Mack will notify owners, and dealers will replace the electronic flasher unit, free of charge. The recall will begin by mid-June 2014. Interim letters went out to owners on June 23, 2014. The recall began on July 25, 2014. Owners may contact Mack customer service at 1-866-298-6586. Mack's number for this recall is SC0379.
ON CERTAIN TRUCKS EQUIPPED WITH A SAF HOLLAND SIMPLEX FIFTH WHEEL, THE LEVER ARM PIVOT BOLT MAY HAVE BEEN OVER TIGHTENED. AN OVER TIGHTENED PIVOT BOLT CAN DISTORT THE PIVOT BOLT SPACER SLEEVE, WHICH MAY PREVENT THE FIFTH WHEEL LATCH JAW FROM CLOSING AND LATCHING SECURELY AROUND THE TRAILER KING PIN.
Consequence & remedy
Consequence: THERE IS A POSSIBILITY THAT THE PIVOT BOLT CAN BECOME LOOSE WITHOUT THE DRIVER'S KNOWLEDGE. WHEN THIS OCCURS, THE DRIVER COULD DRIVE AWAY AND THE TRAILER COULD BECOME DISENGAGED, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE PIVOT BOLT AND SLEEVE WITH A HEX HEAD SHOULDER BOLT AND WASHER FREE OF CHARGE. THE RECALL BEGAN ON JANUARY 28, 2008. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
CERTAIN TRUCKS EQUIPPED WITH HAULMAX REAR SUSPENSIONS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." IT DOES NOT MEET THE REQUIRED STOPPING DISTANCE AS SPECIFIED IN THE REGULATION.
Consequence & remedy
Consequence: THE VEHICLE COULD EXPERIENCE REDUCED BRAKING PERFORMANCE AS A RESULT. IF THIS WARNING IS NOT HEEDED, A VEHICLE CRASH COULD OCCUR.
Remedy: DEALERS WILL RELOCATE THE ANTILOCK BRAKING SYSTEM (ABS) SENSOR FROM THE REAR DRIVE AXLE TO THE FRONT DRIVE AXLE FREE OF CHARGE. THE RECALL BEGAN ON JUNE 15, 2007. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
ON CERTAIN TRUCKS EQUIPPED WITH A 46K POUND CHALMERS REAR SUSPENSION, THE ADJUSTABLE TORQUE RODS USED ON THE SUSPENSION MAY BE BRITTLE.
Consequence & remedy
Consequence: THIS MAY LEAD TO A PREMATURE FAILURE OF THE ROD, WHICH MAY RESULT IN A LOSS OF CONTROL OF THE VEHICLE INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT AND REPAIR THE RODS AS REQUIRED FREE OF CHARGE. THE RECALL BEGAN ON MARCH 14, 2007. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
CERTAIN TRUCKS EQUIPPED WITH THE TRI-DRIVE OPTION FAIL TO COMPLY WITH THE PERFORMANCE CRITERIA REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, 'AIR BRAKE SYSTEMS.'
Consequence & remedy
Consequence: THE PURPOSE OF THIS STANDARD IS TO INSURE SAFE BRAKING PERFORMANCE UNDER NORMAL AND EMERGENCY CONDITIONS.
Remedy: THE TRUCKS WILL HAVE THE PNEUMATIC SYSTEM RECONFIGURED. THE RECALL IS EXPECTED TO BEGIN ON OR BEFORE SEPTEMBER 29, 2006. OWNERS MAY CONTACT MACK AT 1-800-528-6586.
ON CERTAIN TRUCKS EQUIPPED WITH A LEGRIS AIR MANIFOLD, THE BRASS PUSH-TO-CONNECT CARTRIDGE MAY UNEXPECTEDLY SEPARATE FROM THE PLASTIC HOUSING.
Consequence & remedy
Consequence: IF THE PUSH-TO-CONNECT CARTRIDGE THAT SUPPLIES THE AIR TO THE PARK BRAKE CHAMBERS WERE TO SEPARATE, THEN THE BRAKES COULD UNEXPECTEDLY APPLY INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE AIR MANIFOLD FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 27, 2006. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
ON CERTAIN TRUCKS EQUIPPED WITH SR-7 BENDIX BRAKE VALVES, THE CHECK VALVE INSIDE THE VALVE CAVITY MAY NOT PROPERLY SET, CAUSING INTERNAL AIR LEAKAGE. IF THE CHECK VALVE DOES NOT PROPERLY SEAT, THE RESULTING LEAKAGE CAN CAUSE A DELAY IN THE APPLICATION OF THE SPRING BRAKES TO PARK THE VEHICLE AFTER OPERATOR PULLS THE DASH VALVE BUTTON.
Consequence & remedy
Consequence: THE DELAYED PARKING BRAKE APPLICATION CAN OCCUR WITHOUT WARNING, LEADING TO UNINTENDED VEHICLE ROLLAWAY INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THE VALVES AND REPLACE IT FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 14, 2006. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
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