2007 Mack Ctp problems

Defect

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

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.

Defect

ON CERTAIN TRUCKS EQUIPPED WITH BENDIX SR-7 SPRING BRAKE MODULATING VALVES, THE INTERNAL RUBBER CHECK VALVE MAY LEAK CAUSING A DELAY IN THE APPLICATION OF THE SPRING BRAKES TO PARK THE VEHICLE AFTER THE OPERATOR PULLS THE DASH VALVE BUTTON.

Consequence

THIS COULD DELAY OR FAILURE IN APPLYING THE PARKING BRAKES WHICH COULD RESULT IN A VEHICLE ROLL AWAY, INCREASING THE RISK OF A CRASH.

Remedy

MACK IS WORKING WITH BENDIX TO REPAIR THESE VEHICLES (PLEASE SEE 07E037). BENDIX WILL INSTALL A CHECK VALVE REPAIR KIT FOR THE AFFECTED SR-7 SPRING BRAKE MODULATING VALVE FREE OF CHARGE. THE RECALL BEGAN ON JANUARY 10, 2008. OWNERS MAY CONTACT BENDIX AT 1-440-329-9000 OR MACK AT 1-800-528-6586.

Defect

ON CERTAIN TRUCKS, THE COTTER PIN THAT RETAINS THE BRAKE PEDAL CLEVIS PIN MAY NOT HAVE BEEN INSTALLED. THE CLEVIS PIN CONNECTS THE BRAKE PEDAL TO THE BRAKE FOOT VALVE.

Consequence

IF THE PIN WERE TO COME LOOSE, THE DRIVER WOULD NOT BE ABLE TO APPLY THE SERVICE BRAKE, WHICH COULD RESULT IN A CRASH.

Remedy

DEALERS WILL INSPECT TO SEE IF THE COTTER PIN IS MISSING. IF THE PIN IS MISSING, THE COTTER PIN WILL BE INSTALLED. OWNERS ARE BEING ADVISED NOT THE DRIVE THE VEHICLE UNTIL THE PIN HAS BEEN INSTALLED. THE RECALL BEGAN ON MARCH 26, 2007. OWNER MAY CONTACT MACK TRUCK AT 1-800-528-6586.

Defect

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

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.

Defect

ON CERTAIN TRUCKS EQUIPPED WITH A 46K POUND CHALMERS REAR SUSPENSION, THE ADJUSTABLE TORQUE RODS USED ON THE SUSPENSION MAY BE BRITTLE.

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.

Defect

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

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.