The issue
Certain vehicles do not comply with the requirements of CMVSS 121 "Air Brake Systems". Due to improper seating of the check valve retainer in the brass fitting housing, it is possible for the air brake system pressure to push the check valve internal parts into the primary system reservoir and a vehicle operator would not know that this has happened. In this condition, the vehicle would not meet the emergency requirements of the standard. Correction: Dealer will replace the check valve.
Description (français)
Certains véhicules ne respectent pas les exigences de la NSVAC 121 portant sur les systèmes de freinage à air comprimé. À cause d'un mauvais appui du dispositif de retenue du clapet dans le réceptacle de raccordement en laiton, il est possible que la pression du système de freinage à air comprimé pousse les pièces internes du clapet de non-retour dans le réservoir du système primaire sans que le conducteur du véhicule s'en aperçoive. Dans cet état, le véhicule ne respecterait pas les exigences d'urgence de la norme. Correction : Le concessionnaire devra remplacer le clapet de non-retour.
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada · official text, unchanged
Vehicles covered
| Make and model | Model years |
|---|---|
| Mack CH | 2003 |
| Mack CL | 2003 |
| Mack CV | 2003 |
| Mack CX | 2003 |
| Mack DM6 | 2003 |
| Mack DMM | 2003 |
| Mack LE | 2003 |
| Mack MR | 2003 |
| Mack RD6 | 2003 |
| Mack RD8 | 2003 |
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CH | 2003 | 0 | 7 |
| Mack CL | 2003 | 0 | 2 |
| Mack CV | 2003 | 2 | 5 |
| Mack CX | 2003 | 0 | 10 |
| Mack DM6 | 2003 | 0 | 1 |
| Mack DMM | 2003 | 0 | 1 |
| Mack LE | 2003 | 0 | 4 |
| Mack MR | 2003 | 0 | 4 |
| Mack RD6 | 2003 | 0 | 1 |
| Mack RD8 | 2003 | 0 | 1 |