Recall 78V-028: 1973–1977 Mack HMM6856S
MACK TRUCKS, INCORPORATED recall for steering, reported to NHTSA on Feb 9, 1978, covering about 100 vehicles.
The problem
The steering pitman arm is subject to failure at the area of the transition to the arm offset due to high stress concentrations.
The fix
Dealer will replace the steering pitman arm, steering gear output shaft and steering gear mounting bracket.
Notes
Vehicle description: trucks.system: steering; steering pitman arm.consequences of defect: pitman arm failure could cause loss of vehicle controlwithout prior warning and a potential vehicle accident.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Steering › Linkages |
| Recall started by | the manufacturer |
| NHTSA campaign number | 78V028000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Mack HMM6856S | 1973, 1974, 1975, 1976, 1977 | 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 78V-028?
The steering pitman arm is subject to failure at the area of the transition to the arm offset due to high stress concentrations.
How is recall 78V-028 fixed?
Dealer will replace the steering pitman arm, steering gear output shaft and steering gear mounting bracket.
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.