Vehicle recall 08V144000 · March 26, 2008
2006-2007 Mack MR
A check valve was omitted from the secondary supply port of the SR-7 spring brake modulating valve.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Mack is recalling 218 my 2006-2007 mr trucks. A check valve was omitted from the secondary supply port of the SR-7 spring brake modulating valve.
- Consequence
- As a result, an air leak in the secondary or primary system may result in the park brakes inadvertently applying, increasing the risk of a crash.
- Remedy
- Dealers will add a check valve to the secondary supply port of the SR-7 spring brake modulating valve and will also repair the SR-7 valve by applying a check valve repair kit as required for the bendix safety recall (please see 07E-037). The recall began on April 15, 2008. Owners may contact mack at 1-800-528-6586.
- Notes
- Mack recall no. SC0337.CUSTOMERS 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
- 08V144000
- Reported to NHTSA
- March 26, 2008
- Filed by
- MACK TRUCKS, INC
- Manufacturer campaign
- SC0337
- Owner notification
- April 15, 2008
- Vehicles potentially affected
- 218
- Initiated by
- the manufacturer
- Components
- Service brakes, air › Supply › Check 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.