NHTSA Recall 75V141000
Filed by Mack Trucks, Inc.. Component: Service Brakes, Air. Reported 1975-07-24. An estimated 935 vehicles are affected. Recall repairs are free at any authorized dealer.
Defect
MACK CAMPAIGN NO SCO-63.TRUCKS MFG'D DEC.12, 1974 THRU JUNE 30, 1975.POSSIBILITY THAT THE TRAILER SUPPLY CONTROL VALVE EXHAUST PORT WAS INADVERTENLYPLUGGED, AND THE SAFETY VALVE ON THE AIR RESERVOIR MAY HAVE BEEN OMITTED.IFTHIS CONDITION EXISTS IT COULD LEAD TO INTERMITTENT LOCKUP OF THE TRAILERBRAKES AND DIFFICULTY IN CHARGING THE TRAILER BRAKE AIR SYSTEM.(CORRECT BYINSPECTING AND INSTALLING VALVE AND UNPLUG CONTROL VALVE).
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