Vehicle recall 07V361000 · August 15, 2007

Mack CV, CXN and 5 more models

On certain trucks equipped with parker single check valves (scv) provided by bendix.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: On certain trucks equipped with parker single check valves (scv) provided by bendix. The defect exists in the parker scv that connects with the supply port of the SR-7 spring brake modulating valve. After prolonged use of the parker scv, the valve body retainer may become excessively worn and eventually break apart. Pieces of the parker scv can become lodged inside the SR-7 spring brake modulating valve, potentially causing either leakage out of the SR-7 valve or preventing air from properly exhausting from the SR-7 valve.
Consequence: This condition can cause a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button. These conditions can occur without warning, leading to unintended vehicle rollaway, brake drag, or in the case of loss of primary circuit, inability to modulate the spring brakes.
Remedy: Mack is working with bendix to replace the parker single check valve. The recall began on January 9, 2008. Owners may contact bendix at 1-440-329-9000 or mack at 1-800-528-6586.
Notes: Mack recall no. SC0334 (SC0327).customers may 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: 07V361000
Reported to NHTSA: August 15, 2007
Filed by: MACK TRUCKS, INC
Manufacturer campaign: SC0334
Owner notification: January 9, 2008
Vehicles potentially affected: 21,847
Initiated by: the manufacturer
Components: Service brakes, air › Supply › Check valve

Recall 07V361000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Mack CHN (2005-2007): 2007, 2006, 2005
Mack CHU (2008): 2008
Mack CTP (2006): 2006
Mack CV (2004-2008): 2008, 2007, 2006, 2005, 2004
Mack CXN (2005-2008): 2008, 2007, 2006, 2005
Mack CXU (2008): 2008
Mack GU (2008): 2008

Has your Mack been repaired?

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