- Vehicles
- 10,000
- Built between
- Jul 1979 – Jan 1980
- Models
- 4
- Recall type
- Vehicle
- Initiated by
- Manufacturer
- Owners notified
- 21 December 1981
- Repaired
- Not reported
- Unrepaired
- Not reported
Does this affect my vehicle?
This recall covers vehicles built between July 1979 and January 1980. If yours was built outside that window, it is not part of this recall.
- 1979-1980 Mack F SeriesBuilt July 1979 to January 1980
- 1979-1980 Mack MC SeriesBuilt July 1979 to January 1980
- 1979-1980 Mack R SeriesBuilt July 1979 to January 1980
- 1979-1980 Mack U SeriesBuilt July 1979 to January 1980
What the defect is
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.
What gets fixed
THE HOLES WILL BE RETOOLED TO PROVIDE CORRECT ALIGNMENT AND PLASTIC KNOBS WILL BE REPLACED BY KNOBS OF STRONGER MATERIAL HAVING METAL REINFORCEMENTS.
Timeline
- Vehicles builtJuly 1979 to January 1980
- Recall reported to NHTSA8 July 1981
- Owners notified21 December 1981
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 8 July 1981.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Official source
- Recalling manufacturer
- MACK TRUCKS, INCORPORATED
- Recall initiated by
- MFR
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Additional 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.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.