2003 MACK CV

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

ON CERTAIN CHASSIS EQUIPPED WITH DEFIANCE METAL FUEL TANK SUPPORT BRACKET ASSEMBLIES, THE FUEL TANK BRACKET WAS NOT WELDED PER SPECIFICATION. THIS CAN CAUSE THE FUEL TANK TO SEPARATE FROM THE CHASSIS DURING ASSEMBLY OPERATION.

SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

CERTAIN HEAVY DUTY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." IMPROPER SEATING OF THE CHECK VALVE RETAINER IN THE BRASS FITTING HOUSING HAS OCCURRED. IT IS POSSIBLE FOR THE AIR BRAKE SYSTEM PRESSURE TO PUSH THE CHECK VALVE I

SERVICE BRAKES, AIR:DISC:CHAMBER

CERTAIN TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." THE FRONT BRAKE CHAMBER ON SOME 18,000 LB. AND 20,000 LB FRONT AXLE ASSEMBLIES IS TOO SMALL TO MEET STOPPING DISTANCE REQUIREMENTS.

POWER TRAIN:AXLE ASSEMBLY

MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2002 THROUGH 2004 CL, CV, LE, MR, RB, RD, AND MODEL YEAR 2003 THROUGH 2004 DM HEAVY TRUCKS MANUFACTURED FROM FEBRUARY 1, 2002 THROUGH SEPTEMBER 30, 2003, EQUIPPED WITH AXLE BEAMS MANUFACTURED BY BHARAT FORGE. THE AXLE BEAM MAY HAVE TRANSVERSE SHEAR LINES

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:MOUNTING

ON CERTAIN TRUCKS, THE FUEL TANK MOUNTING STRAP WAS NOT WELDED TO SPECIFICATIONS AND MAY FAIL. THE FUEL TANK STRAP SUPPORTS AND FASTENS THE STEPS FOR THE OPERATOR AND PASSENGER TO ENTER AND EXIT THE CAB.

THIS VEHICLE IS A 2003 MACK TRUCK MODEL CV AND IS A STRAIGHT FRAME DUMP TRUCK WITH THREE REAR TANDEM AXLES. STOPPING IS ACHIEVED THROUGH A STANDARD AIR BRAKE SYSTEM WHERE COMPRESSED AIR IS USED AS THE ENERGY MEDIUM. THE BRAKE PEDAL EFFORT OF THE OPERATOR IS USED ONLY TO MODULATE THE AIR PRESSURE APPLIED TO THE BRAKE CHAMBERS. THIS TRUCK CONFORMS TO THE DUAL BRAKE SYSTEM. ALTHOUGH THE ENERGY SOURCE IS COMPRESSED AIR, THE TRANSMISSION OF ENERGY FROM THE BRAKE CHAMBER TO THE FRICTION SURFACES INVOL