THOMAS SAF-T-LINER HDX 2011: ENGINE AND ENGINE COOLING:ENGINE

General Information

NHTSA Campaign ID Number: 15V344000

Make Model Year
THOMAS SAF-T-LINER HDX 2011
Date Owners Notified Date Received by ODI Date Added to Database
2015-06-12 2015-06-03 2015-06-03

Production Dates: 2008-05-25 - 2014-12-18

Manufacturers Involved: Daimler Trucks North America, LLC

Manufacturer Campaign Number: FL-681

Component: ENGINE AND ENGINE COOLING:ENGINE

Potential Number Of Units Affected: 746

Report Initiator: MFR MFR Report

Summary

Daimler Trucks North America LLC "DTNA" is recalling certain model year 2008-2015 Thomas Built Buses Saf-T-Liner HDX school buses manufactured May 25, 2008, to December 18, 2014, and equipped with certain Cummins Westport ISL G engines. 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.

Consequence

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

Remedy

Cummins will notify owners on behalf of DTNA, and dealers secure the ends of the 90-degree elbow. In addition, the electronic control module "ECM" will be reprogrammed 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 DTNA customer service at 1-800-745-8000, or Cummins customer service at 1-800-343-7357. DTNA's number for this recall is FL-681.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 'TTY 1-800-424-9153', or go to www.safercar.gov.