- Vehicles
- 9,700
- Built between
- Oct 1974 – Mar 1976
- Models
- 13
- Recall type
- Vehicle
- Initiated by
- NHTSA investigation
- Owners notified
- 1 September 1978
- Repaired
- Not reported
- Unrepaired
- Not reported
Does this affect my vehicle?
This recall covers vehicles built between October 1974 and March 1976. If yours was built outside that window, it is not part of this recall.
- 1974-1976 Mack DMBuilt October 1974 to March 1976
- 1974-1976 Mack DMMBuilt October 1974 to March 1976
- 1974-1976 Mack FBuilt October 1974 to March 1976
- 1974-1976 Mack HMMBuilt October 1974 to March 1976
- 1974-1976 Mack MBBuilt October 1974 to March 1976
- 1974-1976 Mack RBuilt October 1974 to March 1976
- 1974-1976 Mack RDBuilt October 1974 to March 1976
- 1974-1976 Mack RLBuilt October 1974 to March 1976
- 1974-1976 Mack RMBuilt October 1974 to March 1976
- 1974-1976 Mack RSBuilt October 1974 to March 1976
- 1974-1976 Mack UBuilt October 1974 to March 1976
- 1974-1976 Mack WLBuilt October 1974 to March 1976
- 1974-1976 Mack WSBuilt October 1974 to March 1976
What the defect is
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.
What gets fixed
THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.
Timeline
- Vehicles builtOctober 1974 to March 1976
- Recall reported to NHTSA4 April 1978
- Owners notified1 September 1978
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 4 April 1978.
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
- ODI
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 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.
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.