Recall 80V-052: 1979–1980 Mack MC Series, 1979–1980 Mack R Series and 1 more
MACK TRUCKS, INCORPORATED recall for parking brake, reported to NHTSA on May 6, 1980, covering about 9,666 vehicles.
The problem
On certain vehicles, the knob that operates the tractor park valve may break off, rendering the valve inoperable.
The fix
Defective knobs will be replaced with an improved type, without charge to owner.
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.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Parking Brake › Driveline › Air |
| Recall started by | the manufacturer |
| NHTSA campaign number | 80V052000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Mack MC Series | 1979, 1980 | All years |
| Mack R Series | 1979, 1980 | All years |
| Mack U Series | 1979, 1980 | All years |
Not every vehicle of these model years is included. Enter your VIN at nhtsa.gov/recalls ↗ or ask a dealer.
Frequently asked questions
What is recall 80V-052?
On certain vehicles, the knob that operates the tractor park valve may break off, rendering the valve inoperable.
How is recall 80V-052 fixed?
Defective knobs will be replaced with an improved type, without charge to owner.
Is the recall repair free?
Yes. Safety recall repairs are free at authorized dealers. Check whether your vehicle is included with its VIN at nhtsa.gov/recalls.