NHTSA Campaign 81V088000
SERVICE BRAKES, AIR:CONTROLS:HAND CONTROL/VALVE
Issued by MACK TRUCKS, INCORPORATED · Reported Jul 8, 1981 · 10,000 vehicles affected
What's wrong
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.
Vehicles affected by this recall
| Make | Model | Year | Units |
|---|---|---|---|
| MACK | F SERIES | 1979 | 10,000 |
| MACK | F SERIES | 1980 | 10,000 |
| MACK | MC SERIES | 1979 | 10,000 |
| MACK | MC SERIES | 1980 | 10,000 |
| MACK | R SERIES | 1979 | 10,000 |
| MACK | R SERIES | 1980 | 10,000 |
| MACK | U SERIES | 1979 | 10,000 |
| MACK | U SERIES | 1980 | 10,000 |
Source: NHTSA Campaign 81V088000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.