REAR BRAKE RELAY VALVE CONTROL LINE WAS CONNECTED TO THE SECONDARY DOUBLE CHECK VALVE, RATHER THAN THE PRIMARY ONE. CONSEQUENCE OF DEFECT: THESE TRUCKS HAVE A TWO AXLE BRAKE SYSTEM EACH ON…
A POORLY DESIGNED BRACKET WHICH MOUNTS THE SERVICE/PARKING BRAKE UNIT TO THE REAR DRIVE AXLE MAY ALLOW DAMAGE TO BRAKE CHAMBER. DAMAGE MAY CAUSE THE SPRING BRAKE TO BE APPLIED.
ENGINE COOLING FAN IS MADE OF A PLASTIC OUTER RING AND BLADE MOLDED TO A METAL CENTER. THE FAN BLADES CAN SEPARATE FROM THE HUB AND DISINTEGRATE WITHOUT WARNING.
A BOLT MAY NOT HAVE BEEN FULLY TIGHTENED ON THE PITMAN ARM AND RETAINING SCREWS MAY NOT HAVE BEEN INSTALLED OR MAY NOT HAVE BEEN FULLY TIGHTENED. THE PITMAN ARM COULD SEPARATE…