Recall
Mack R Series — 81V088000
NHTSA ID
81V088000
Make
Mack
Model
R Series
Years Affected
1979
Recall Date
1981-07-08
Component
SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE
Units Affected
10,000
Completion Rate
—
Mfr Campaign No.
Summary
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.
Remedy
THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.