Mack Trucks (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.
Mack Trucks – Vent Tube May Detach from Engine Breather
| Report Received Date | 05/11/2015 |
| NHTSA ID | 15V275000 |
| Consequence Summary | If engine oil comes into contact with a hot surface, there could be an increased risk of a fire. |
| Corrective Action | 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 at 1-800-343-7357. Mack's number for this recall is SC0391. |
| Recall Code | SC0391 |
| Potentially Affected | 2124 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=15V275000) |
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