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1. Year:1974 Make:MACK Model:U

   Manufacturer	Component Mfg	Component	Component	Description	Consequence	Corrective Action
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE	19780404	AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED.		THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)	19751031
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS	19751031
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN	19771012	THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.		DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	EXTERIOR LIGHTING:HEADLIGHTS:SWITCH	19741121
   MACK TRUCKS, INC	MACK TRUCKS, INCORPORATED	STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM	19780808	DEFICIENCIES, IN THE FORM OF FORGING LAPS, CRACKS AND EXCESSIVE DECARBURIZATION DURING HEAT TREATMENT, EXIST IN THE STEERING KNUCKLES. STRESSES IMPOSED WITH INTEGRAL HYDRAULIC POWER STEERING MAY LEAD TO A FAILURE IN THE AREA OF THE STEERING ARM ATTACHING BOSS. THIS TYPE OF FAILURE WOULD CAUSE LOSS OF STEERING CONTROL.		DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE LEFT STEERING KNUCKLE WITH AN IMPROVED TYPE OF KNUCKLE.

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