The defect
MACK IS RECALLING 338 MODEL YEAR 2009 MRU AND LEU HEAVY DUTY TRUCKS MANUFACTURED FROM AUGUST 20 THROUGH NOVEMBER 26, 2008 EQUIPPED WITH CERTAIN HALDEX QUICK RELEASE VALVES (QRV). THE RUBBER DIAPHRAGM INSIDE THE QRV MAY EXPERIENCE DELAMINATION RESULTING IN SIGNIFICANT LEVELS OF AIR PRESSURE LEAKAGE PAST AND/OR THROUGH THE DIAPHRAGM, OR THE DEVELOPMENT OF A BUBBLE IN THE DIAPHRAGM WHICH MAY TRAP AIR PRESSURE IN THE VALVE AND NOT ALLOW THE SERVICE BRAKES TO RELEASE.
The risk
MALFUNCTION OF THE AIR BRAKE SYSTEM COULD RESULT IN A VEHICLE CRASH.
The remedy
MACK WILL NOTIFY OWNERS AND REPAIR THE AFFECTED VEHICLE FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR ABOUT JULY 13, 2009. OWNERS CAN CONTACT MACK TOLL-FREE AT 1-800-866-1177.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Mack LEU | 2009 |
| Mack MRU | 2009 |
Components: SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE
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 LEU | 2009 | 0 | 4 |
| Mack MRU | 2009 | 0 | 7 |
Other service brakes, air recalls in 2009
27 of the 491 recall campaigns reported to NHTSA in 2009 concerned the service brakes, air; MACK TRUCKS, INC filed 74 campaigns in all.
| 09V487000 22 Dec 2009 | NISSAN DIESEL AMERICA, INC |
| 09V475000 15 Dec 2009 | FORD MOTOR COMPANY |
| 09V395000 6 Oct 2009 | MACK TRUCKS, INC |
| 09V380000 1 Oct 2009 | ENTEGRA COACH |
| 09V334000 20 Aug 2009 | LABRIE ENVIRONMENTAL GROUP |
| 09V309000 29 Jul 2009 | GENERAL MOTORS CORP. |
| 09V290000 23 Jul 2009 | ROUSH PERFORMANCE PRODUCTS, INC. |
| 09V285000 23 Jul 2009 | BLUE BIRD BODY COMPANY |
NHTSA recalls (public domain) · all recalls of 2009