Recall 79V-082: 1977–1978 Mack DM, 1977–1978 Mack R and 2 more
MACK TRUCKS, INCORPORATED recall for steering, reported to NHTSA on Apr 3, 1979, covering about 12,000 vehicles.
The problem
An improper pinch bolt and nut may have been used in the clamping of the steering shaft to the steering gear input shaft. Due to clamping force loads applied at the bolt, the nut could yield, resulting in looseness of the input shaft yoke. Should this condition go unnoticed, spline wear could cause shaft separation.
The fix
Vehicles will be inspected and, if necessary, the correct fasteners will be installed at no charge to owner.
Notes
Vehicle description: heavy trucks.system: steering; steering shaft clamp bolt.consequences of defect: this defect could cause loss of vehicle control and avehicle accident.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Steering › Steering Wheel/Handle Bar |
| Recall started by | the manufacturer |
| NHTSA campaign number | 79V082000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Mack DM | 1977, 1978 | All years |
| Mack R | 1977, 1978 | All years |
| Mack RD | 1977, 1978 | All years |
| Mack U | 1977, 1978 | 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 79V-082?
An improper pinch bolt and nut may have been used in the clamping of the steering shaft to the steering gear input shaft. Due to clamping force loads applied at the bolt, the nut could yield, resulting in looseness of the input shaft yoke. Should this condition go unnoticed, spline wear could cause shaft separation.
How is recall 79V-082 fixed?
Vehicles will be inspected and, if necessary, the correct fasteners will be installed at no 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.