WELDS MAY BE OF POOR QUALITY, CRACKED OR MISSING FROM THE PINTLE HOOK ASSEMBLY TO THE REAR FRAME.
WELDS MAY BE OF POOR QUALITY, CRACKED OR MISSING FROM THE PINTLE HOOK ASSEMBLY TO THE REAR FRAME.
THE AIR BRAKE HOSE LEADING TO THE FRONT AXLE SPRING BRAKE CHAMBERS MAY BE 1.5 INCHES SHORTER THAN THE SPECIFIED LENGTH OR ARE CONNECTED TO AIR TANKS MISLOCATED UP TO 1.5 INCHES. CONSEQUENCE OF DEFECT: FAILURE OF THE HOSES WOULD LEAD TO DECREASED BRAKING CAPABILITY WHICH MAY RESULT IN AN ACCIDENT.
THE AIR BRAKE HOSE LEADING TO THE FRONT AXLE SPRING BRAKE CHAMBERS MAY BE 1.5 INCHES SHORTER THAN THE SPECIFIED LENGTH OR ARE CONNECTED TO AIR TANKS MISLOCATED UP TO 1.5 INCHES. CONSEQUENCE OF DEFECT: FAILURE OF THE HOSES WOULD LEAD TO DECREASED BRAKING CAPABILITY WHICH MAY RESULT IN AN ACCIDENT.
THE AIR BRAKE HOSE LEADING TO THE FRONT AXLE SPRING BRAKE CHAMBERS MAY BE 1.5 INCHES SHORTER THAN THE SPECIFIED LENGTH OR ARE CONNECTED TO AIR TANKS MISLOCATED UP TO 1.5 INCHES. CONSEQUENCE OF DEFECT: FAILURE OF THE HOSES WOULD LEAD TO DECREASED BRAKING CAPABILITY WHICH MAY RESULT IN AN ACCIDENT.
THE AIR BRAKE HOSE LEADING TO THE FRONT AXLE SPRING BRAKE CHAMBERS MAY BE 1.5 INCHES SHORTER THAN THE SPECIFIED LENGTH OR ARE CONNECTED TO AIR TANKS MISLOCATED UP TO 1.5 INCHES. CONSEQUENCE OF DEFECT: FAILURE OF THE HOSES WOULD LEAD TO DECREASED BRAKING CAPABILITY WHICH MAY RESULT IN AN ACCIDENT.
THE BOTTOM PLATES, WHICH ARE LOCATED AT THE BOTTOM PART OF THE TRAILER AXLE, MAY FRACTURE DURING SEVERE OPERATION OF THE INVOLVED SEMI-TRAILERS. FRACTURE OF ONE OR MORE OF THESE BOTTOM PLATES ON A SINGLE AXLE COULD ALLOW THE TRAILERS AXLE TO MOVE IN AN EITHER VERTICAL OR HORIZONTAL DIRECTION OPPOSITE TO THE DIRECTION OF THE TRACTOR TRAILER COMBINATION. THIS CONDITION WOULD NOT ALLOW FOR PROPER DIRECTIONAL CONTROL OF THE TRACTOR-TRAILER COMBINATION.
THE REAR EMERGENCY GLAD HAND WAS IMPROPERLY CONNECTED DIRECTLY TO THE REAR AIR TANK RATHER THAN TO THE EMERGENCY PORT OF THE TASK VALVE. CONSEQUENTLY, IF THE AIR SUPPLY TO THE LEAD TRAILER BECAME DISCONNECTED, THE EMERGENCY BRAKES WOULD BE APPLIED BUT THE REAR TRAILERS WOULD NOT. A HEAVY BRAKE APPLICATION WOULD CAUSE THE REAR TRAILER TO PUSH THE LEAD TRAILER FORWARD, INCREASING THE VEHICLE BRAKING DISTANCE, AND CREATING THE POTENTIAL FOR A JACK KNIFE.
CERTAIN WELDS ATTACHING THE LANDING GEAR TRANSVERSE SUPPORTING BRACKETRY TO THE MAIN LANDING GEAR ATTACHING BRACKET MAY HAVE BEEN APPLIED WITH POOR WELDING TECHNIQUES. BECAUSE OF THIS MISAPPLICATION OF WELDING, THIS BRACKETRY CAN BECOME DISENGAGED FROM THE MAIN LANDING GEAR ATTACHING BRACKET.
CERTAIN STRUCTURAL WELDS ATTACHING THE KING PIN TO THE KING PIN MOUNTING STRUCTURE MAY HAVE BEEN OMITTED OR APPLIED WITH POOR WELDING TECHNIQUES. THIS COULD ALLOW THE KING PIN TO LOOSEN FROM ITS SUPPORTING STRUCTURE.
THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, AIR BRAKE SYSTEMS, IN THAT A 3/8-INCH DIAMETER RED SYNFLEX TUBING WAS INCORRECTLY INSTALLED. THE TUBING MAY HAVE BEEN INSTALLED SO THAT THE TWO AIR RESERVOIRS ARE DIRECTLY CONNECTED AND BOTH RESERVOIRS WOULD BE AFFECTED IF SERVICE BRAKE AIR PRESSURE IS LOST. REDUCED AIR PRESSURE IN BOTH RESERVOIRS WILL NOT ALLOW THE PARKING BRAKES TO BE COMPLETEY RELEASED.
THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, AIR BRAKE SYSTEMS, IN THAT A 3/8-INCH DIAMETER RED SYNFLEX TUBING WAS INCORRECTLY INSTALLED. THE TUBING MAY HAVE BEEN INSTALLED SO THAT THE TWO AIR RESERVOIRS ARE DIRECTLY CONNECTED AND BOTH RESERVOIRS WOULD BE AFFECTED IF SERVICE BRAKE AIR PRESSURE IS LOST. REDUCED AIR PRESSURE IN BOTH RESERVOIRS WILL NOT ALLOW THE PARKING BRAKES TO BE COMPLETEY RELEASED.
THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, AIR BRAKE SYSTEMS, IN THAT A 3/8-INCH DIAMETER RED SYNFLEX TUBING WAS INCORRECTLY INSTALLED. THE TUBING MAY HAVE BEEN INSTALLED SO THAT THE TWO AIR RESERVOIRS ARE DIRECTLY CONNECTED AND BOTH RESERVOIRS WOULD BE AFFECTED IF SERVICE BRAKE AIR PRESSURE IS LOST. REDUCED AIR PRESSURE IN BOTH RESERVOIRS WILL NOT ALLOW THE PARKING BRAKES TO BE COMPLETEY RELEASED.
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, AIR BRAKE SYSTEMS. INCORRECT WIRING OF THE POSITIVE AND NEGATIVE POWER LEADS FOR THE BRAKE SYSTEM RENDERS THE ANTI-SKID FEATURE INOPERABLE.
THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, AIR BRAKE SYSTEMS. IT IS POSSIBLE THAT INCORRECT PLUMBING OF THE REAR BRAKE AXLES OCCURRED. CONSEQUENTLY, THE REAR AXLE MAY NOT BE CAPABLE OF CYCLING ITS BRAKE APPLICATIONS IN THE ANTI-SKID MODE.