Recall 15V275000: 2011–2016 Mack MRU

Report received

May 11, 2015

Manufacturer

Mack Trucks, Inc.

Potentially affected

2,124vehicles

Model years

2011–2016

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

Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2016 Mack MRU and LEU trucks manufactured June 25, 2010, to April 30, 2015, and 2015-2016 LR6 trucks manufactured from December 18, 2014 through March 6, 2015. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.

Possible consequence

If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.

Remedy

Cummins will notify owners on behalf of Mack, and Cummins service centers will administer the repairs which include securing the ends of the 90-degree elbow and reprogramming the electronic control module (ECM) with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Mack customer service at 1-800-528-6586 or Cummins Inc. at 1-800-343-7357. Mack's number for this recall is SC0391.

Affected model years

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

• 2011 Mack MRU0 complaints
• 2012 Mack MRU0 complaints
• 2013 Mack MRU0 complaints
• 2014 Mack MRU0 complaints
• 2015 Mack MRU0 complaints
• 2016 Mack MRU0 complaints