ON CERTAIN TRAILERS EQUIPPED WITH WABCO 4S/2M SYSTEM, THE ELECTRICAL AND AIR CONNECTIONS ARE IMPROPERLY CONNECTED.
ON CERTAIN TRAILERS EQUIPPED WITH WABCO 4S/2M SYSTEM, THE ELECTRICAL AND AIR CONNECTIONS ARE IMPROPERLY CONNECTED.
ON CERTAIN TRAILERS EQUIPPED WITH WABCO 4S/2M SYSTEM, THE ELECTRICAL AND AIR CONNECTIONS ARE IMPROPERLY CONNECTED.
VEHICLE DESCRIPTION: VAN TRAILERS. THESE TRAILERS DO NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 223, REAR IMPACT GUARDS. THE REAR IMPACT GUARDS SHOULD BE REINFORCED TO IMPROVE THEIR PERFORMANCE IN COLLISIONS.
VEHICLE DESCRIPTION: VAN TRAILERS. THESE TRAILERS DO NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 223, REAR IMPACT GUARDS. THE REAR IMPACT GUARDS SHOULD BE REINFORCED TO IMPROVE THEIR PERFORMANCE IN COLLISIONS.
VEHICLE DESCRIPTION: TRAILER CONVERTER DOLLIES. AN AIR LINE WAS CONNECTED TO AN INCORRECT PORT IN THE AIR VALVE CAUSING THE PARKING BRAKE TO BE INOPERATIVE.
AIR BRAKE FITTINGS AND AIR BRAKE HOSES ON THE BRAKE ACTUATORS CAN BREAK BECAUSE OF INSUFFICIENT VERTICAL CLEARANCE UNDER THE AIR RESERVOIR.
THESE AXLES CONSIST OF A STEEL TUBULAR CENTER SECTION AND FORGED STEEL SPINDLES THAT ARE WELDED TO EACH END OF THE TUBE. EITHER SPINDLE CAN CONTAIN A CIRCUMFERENTIAL CRACK THROUGH A PORTION OF ITS CROSS SECTION.
THESE AXLES CONSIST OF A STEEL TUBULAR CENTER SECTION AND FORGED STEEL SPINDLES THAT ARE WELDED TO EACH END OF THE TUBE. EITHER SPINDLE CAN CONTAIN A CIRCUMFERENTIAL CRACK THROUGH A PORTION OF ITS CROSS SECTION.
THE AIR LINE CONNECTIONS WERE INCORRECTLY INSTALLED ON THESE TRAILERS CAUSING THE AIR BRAKE APPLICATION AND RELEASE TIMES TO BE SLOWER THAN REQUIRED BY FMVSS NO. 121, AIR BRAKE SYSTEMS.
THE AIR LINE CONNECTIONS WERE INCORRECTLY INSTALLED ON THESE TRAILERS CAUSING THE AIR BRAKE APPLICATION AND RELEASE TIMES TO BE SLOWER THAN REQUIRED BY FMVSS NO. 121, AIR BRAKE SYSTEMS.
THE AIR LINE CONNECTIONS WERE INCORRECTLY INSTALLED ON THESE TRAILERS CAUSING THE AIR BRAKE APPLICATION AND RELEASE TIMES TO BE SLOWER THAN REQUIRED BY FMVSS NO. 121, AIR BRAKE SYSTEMS.
MISSING WELDS IN THE UPPER COUPLER ASSEMBLY CAN LEAD TO FATIGUE CRACKS IN THE BOTTOM PLATE OF THE ASSEMBLY OVER A LENGTH OF TIME, CAUSING FAILURE OF THE UPPER COUPLER ASSEMBLY.
THE LOWER FLANGE OF THE KING PIN CAN CRACK. THIS COULD CAUSE COUPLER SEPARATION.
IRON PARTICLES INSIDE THE WHEEL HUBS COULD CREATE FRICTION CAUSING THE BEARING TO OVERHEAT.
A RESILIENT WASHER MAY DROP OUT, CAUSING THE BOLTING ATTACHMENT OF THE AIR RESERVOIR TO THE FRAME TO BECOME LOOSE. DUE TO VIBRATION, THE BOLT COULD EVENTUALLY WEAR THROUGH, ALLOWING THE RESERVOIR TO DROP DOWN ON EITHER END. THIS CONDITION COULD EVENTUALLY CAUSE ONE OF SEVERAL AIR LINES TO WEAR THROUGH OR SEVER.
A RESILIENT WASHER MAY DROP OUT, CAUSING THE BOLTING ATTACHMENT OF THE AIR RESERVOIR TO THE FRAME TO BECOME LOOSE. DUE TO VIBRATION, THE BOLT COULD EVENTUALLY WEAR THROUGH, ALLOWING THE RESERVOIR TO DROP DOWN ON EITHER END. THIS CONDITION COULD EVENTUALLY CAUSE ONE OF SEVERAL AIR LINES TO WEAR THROUGH OR SEVER.
A RESILIENT WASHER MAY DROP OUT, CAUSING THE BOLTING ATTACHMENT OF THE AIR RESERVOIR TO THE FRAME TO BECOME LOOSE. DUE TO VIBRATION, THE BOLT COULD EVENTUALLY WEAR THROUGH, ALLOWING THE RESERVOIR TO DROP DOWN ON EITHER END. THIS CONDITION COULD EVENTUALLY CAUSE ONE OF SEVERAL AIR LINES TO WEAR THROUGH OR SEVER.
A RESILIENT WASHER MAY DROP OUT, CAUSING THE BOLTING ATTACHMENT OF THE AIR RESERVOIR TO THE FRAME TO BECOME LOOSE. DUE TO VIBRATION, THE BOLT COULD EVENTUALLY WEAR THROUGH, ALLOWING THE RESERVOIR TO DROP DOWN ON EITHER END. THIS CONDITION COULD EVENTUALLY CAUSE ONE OF SEVERAL AIR LINES TO WEAR THROUGH OR SEVER.
A RESILIENT WASHER MAY DROP OUT, CAUSING THE BOLTING ATTACHMENT OF THE AIR RESERVOIR TO THE FRAME TO BECOME LOOSE. DUE TO VIBRATION, THE BOLT COULD EVENTUALLY WEAR THROUGH, ALLOWING THE RESERVOIR TO DROP DOWN ON EITHER END. THIS CONDITION COULD EVENTUALLY CAUSE ONE OF SEVERAL AIR LINES TO WEAR THROUGH OR SEVER.