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NHTSA Recall 75V141000


Trucking Agency:  National Highway Traffic Safety Administration
Vehicles:  Mark RL, Mark Rs, Mark WL, Mark WS

NHTSA Recall 75V141000

NHTSA Campaign ID number : 	75V141000
	
Vehicle Make / Model: 	    	Model Year(s):
     MACK / RL 	    	1974-1975
     MACK / RS 	    	1974-1975
     MACK / WL 	    	1974-1975
     MACK / WS 	    	1974-1975
Manufacturer: MACK TRUCKS, INCORPORATED 	Mfr's Report Date: JUL 21, 1975
NHTSA CAMPAIGN ID Number: 75V141000 	
N/A
NHTSA Action Number: N/A
Component: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
Potential Number of Units Affected: 935
Summary:
Consequence:
Remedy:
Notes:
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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