2006–2007 Mack MR Recall: Service Brakes, Air
NHTSA campaign 08V144000 · Service Brakes, Air · filed Mar 26, 2008 · verified Jul 30, 2026
The defect
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.
The risk
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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.
Affected vehicles
Related recalls
More Mack MR recalls
- 2002–2005 Mack LE and 1 other model — Suspension
- 2002–2004 Mack CL and 6 other models — Power Train
- 2004–2005 Mack CL and 6 other models — Power Train
- 2006–2007 Mack CHN and 8 other models — ON CERTAIN TRUCKS EQUIPPED WITH BENDIX SR-7 SPRING BRAKE…
- 2007 Mack CHN and 6 other models — ON CERTAIN TRUCKS EQUIPPED WITH SR-7 BENDIX BRAKE VALVES…
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 08V144000 (manufacturer number SC0337). Data last verified Jul 30, 2026.