- Vehicles
- 9,666
- Built between
- Jul 1979 – Jan 1980
- Models
- 3
- Recall type
- Vehicle
- Initiated by
- Manufacturer
- Owners notified
- 20 October 1980
- 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 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
On certain vehicles, the knob that operates the tractor park valve may break off, rendering the valve inoperable.
What gets fixed
DEFECTIVE KNOBS WILL BE REPLACED WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.
Timeline
- Vehicles builtJuly 1979 to January 1980
- Recall reported to NHTSA6 May 1980
- Owners notified20 October 1980
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 6 May 1980.
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.system: service brakes; tractor park valve control knob.consequences of defect: the purpose of the tractor park valve is to allow thedriver to apply the tractor spring emergency/parking brake independently of thetrailer emergency parking brakes. If the knob is broken, the tractor parkingbrakes cannot be applied. If parked on an incline and left unattended, vehiclecould roll free and cause accident and injury.
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.