CERTAIN AIR BRAKE ANTI-LOCK MODULATORS COULD MALFUNCTION DURING OPERATION OF THE ANTI-LOCK SYSTEM. A NYLON PISTON WITHIN THE MODULATOR AIR VALVE SYSTEM CAN SWELL FROM EXPOSURE TO SYSTEM CONTAMINANTS. CONTINUED EXPOSURE MAY…
THE ENGINE COOLING FAN BLADES MAY CRACK AND CHIP DUE TO HIGH STRESSES CAUSED BY VIBRATIONS. THE CHIPPED PIECES OF THE BLADE COULD FLY INTO THE UNDERHOOD COMPONENTS. ALSO, THESE PIECES COULD…