Auto Recalls for Consumers

1979 MACK U SERIES Recall - Campaign #81V088000

 
Auto Recalls For Consumers

1979 MACK U SERIES RECALL - #81V088000

RECALL FOR SERVICE BRAKES, AIR : CONTROLS : HAND CONTROL/VALVE

THE RETAINING PIN FOR THE BRAKE CONTROL KNOB HAS BEEN MISALIGNED (OFF THE CENTER LINE OF THE VALVE PLUNGER HOLE). THIS CAUSES THE KNOB TO BE OVERSTRESSED AT THE RETAINING PIN HOLE AREA CAUSING IT TO SEPARATE FROM THE VALVE.

Information provided by the National Highway Traffic Safety Administration.

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Vehicle 1979 MACK U SERIES
Manufacturer MACK TRUCKS, INCORPORATED
Manufactured between 7/1/1979 - 1/1/1980
Recalled on 7/14/1981
Influenced by MACK TRUCKS, INCORPORATED
Owners Notified on 12/21/1981
# Affected 10,000
Recalled for SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE
Description THE RETAINING PIN FOR THE BRAKE CONTROL KNOB HAS BEEN MISALIGNED (OFF THE CENTER LINE OF THE VALVE PLUNGER HOLE). THIS CAUSES THE KNOB TO BE OVERSTRESSED AT THE RETAINING PIN HOLE AREA CAUSING IT TO SEPARATE FROM THE VALVE.
Consequences
Corrective action THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.
Notes VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH BRAKE CONTROL KNOBS.SYSTEM: SERVICE BRAKES; KNOB RETAINING PIN.CONSEQUENCES OF DEFECT: WITH THE KNOB BROKEN OFF, THE CONTROL VALVE WOULDBECOME DIFFICULT OR IMPOSSIBLE TO OPERATE. ONE OR A COMBINATION OF BRAKEAPPLICATIONS WOULD NOT BE POSSIBLE AND THE VEHICLE COULD BE PARKED IN AN UNSAFECONDITION. AN ACCIDENT AND PERSONAL INJURY COULD RESULT.
See also 1979 MACK U SERIES Recall for STEERING, GEAR BOX (OTHER THAN RACK AND PINION)

1979 MACK U SERIES Recall for PARKING BRAKE, DRIVELINE, AIR
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