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.
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.
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.