Recall 07V361000: 2004–2008 Mack CV and 3 other models

Report received

Aug 15, 2007

Manufacturer

Mack trucks, inc

Potentially affected

21,847vehicles

Model years

2004–2008

Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.

What NHTSA recorded

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.

Possible 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.

Affected model years

Pages for each model year show complaints, parts, mileage and other recalls.

• 2005 Mack CHN0 complaints
• 2006 Mack CHN0 complaints
• 2007 Mack CHN1 complaints
• 2004 Mack CV0 complaints
• 2005 Mack CV2 complaints
• 2006 Mack CV0 complaints
• 2007 Mack CV0 complaints
• 2008 Mack CV0 complaints
• 2008 Mack CXU0 complaints
• 2008 Mack GU0 complaints