Recall 78V-068: 1974–1976 Mack DM, 1974–1976 Mack DMM and 11 more
MACK TRUCKS, INCORPORATED recall for service brakes, air, reported to NHTSA on Apr 4, 1978, covering about 9,700 vehicles.
The problem
An axle "no brake" condition could result from an eaton controller internal electrical malfunction. This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. As a result, the anti-wheel lock warning lamp is not activated.
The fix
The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.
Notes
Vehicle description: trucks equipped with eaton 21 anti-lock controllers.system: service brakes; anti-wheel lock solenoid.consequences of defect: loss of brakes on any one axle will result in extendedvehicle stopping distances, which could lead to a vehicle accident.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Service Brakes, Air › Antilock › Control Unit/Module |
| Recall started by | NHTSA (Office of Defects Investigation) |
| NHTSA campaign number | 78V068000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Mack DM | 1974, 1975, 1976 | All years |
| Mack DMM | 1974, 1975, 1976 | All years |
| Mack F | 1974, 1975, 1976 | All years |
| Mack HMM | 1974, 1975, 1976 | All years |
| Mack MB | 1974, 1975, 1976 | All years |
| Mack R | 1974, 1975, 1976 | All years |
| Mack RD | 1974, 1975, 1976 | All years |
| Mack RL | 1974, 1975, 1976 | All years |
| Mack RM | 1974, 1975, 1976 | All years |
| Mack RS | 1974, 1975, 1976 | All years |
| Mack U | 1974, 1975, 1976 | All years |
| Mack WL | 1974, 1975, 1976 | All years |
| Mack WS | 1974, 1975, 1976 | 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-068?
An axle "no brake" condition could result from an eaton controller internal electrical malfunction. This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. As a result, the anti-wheel lock warning lamp is not activated.
How is recall 78V-068 fixed?
The dealer will inspect and, if necessary, replace the anti-wheel lock controller 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.