Supply: quick release valveRecall 09V-194 · Mack vehicles
MACK TRUCKS, INC recall 09V-194 covers 338 Mack vehicles for a supply: quick release valve problem, reported to NHTSA on June 1, 2009.
Source: NHTSA recall 09V194000 and manufacturer quarterly reports. Started by an NHTSA defect investigation.
The problem
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 fix
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.
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 <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A>.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
The investigation behind this recall
- Haldex Air Brake System Control ValvesNHTSA