Quick release valves/haldex/meritor wabco
Defect 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.
Safety Consequence
Malfunction of the air brake system could result in a vehicle crash.
Corrective Action
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.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Service Brakes, Air.
FAQ: Recall 09V194000
Your rights, the repair process, and what each field on this page means.
What is recall 09V194000?
NHTSA recall 09V194000 was issued by Mack Trucks, Inc. on June 1, 2009. It addresses: Quick release valves/haldex/meritor wabco. The recall affects approximately 338 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 09V194000 or the manufacturer campaign number SC0338. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.