Vehicle recall 09V194000 · June 1, 2009
Mack LEU and MRU
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…
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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.
- Consequence
- Malfunction of the air brake system could result in a vehicle crash.
- 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.
- Notes
- Mack's recall campaign no. SC0338.OWNERS may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.
Recall details
- NHTSA campaign
- 09V194000
- Reported to NHTSA
- June 1, 2009
- Filed by
- MACK TRUCKS, INC
- Manufacturer campaign
- SC0338
- Owner notification
- July 13, 2009
- Vehicles potentially affected
- 338
- Initiated by
- NHTSA’s Office of Defects Investigation
- Components
- Service brakes, air › Supply › Quick release valve
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.