Thomas Built Buses recall: Engine and engine cooling
What is wrong
Daimler Trucks North America (DTNA) is recalling certain model year 2011 through 2013 Thomas Built non-school buses manufactured from March 2010 through July 2012, equipped with Cummins ISB6.7 diesel engines manufactured from February 16, 2010, through May 4, 2012, containing a fan pulley, part number 3914462. The subject fan pulley is part of the accessory drive system on the front of the engine. This system is used to drive such components as the refrigerant compressors, the radiator fan, and the engine water pump. The web of the pulley can fatigue over time, causing the pulley to fail.
What could happen
If this occurs, the fan belt may lose engagement of the water pump, allowing the cooling system to overheat. This may result in exceeding temperature limits, potentially disabling the school bus. If the school bus is occupied when it becomes disabled, the occupants would need to exit the vehicle and be transferred to another vehicle, putting them at risk of injury.
The fix
Cummins will notify owners of the recall. Repairs will be performed by Cummins authorized service facilities. A new fan drive pulley will be installed free of charge. The safety recall began on January 4, 2013. Owners may contact Cummins at 1-812-377-5000 or DTNA at 1-800-547-0712.
Vehicles covered
- Thomas Built Buses Saf-T-Liner C2 2011–2013
Facts
- NHTSA recall number
- 12V572000
- Type
- Vehicle
- Filed by
- Daimler Trucks North America
- Reported to NHTSA
- Dec 11, 2012
- Owners notified
- Jan 4, 2013
- Vehicles or items affected
- 42
- Started by
- The manufacturer
- Built
- Mar 1, 2010 to Jul 31, 2012
- Part
- Engine and engine cooling › Engine › Diesel
- Maker's own recall number
- FL-635
Notes
DTNA's recall campaign number is FL-635.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.
Other recalls for the same vehicles
- Thomas Built Buses recall: Engine Oct 21, 2026
- Thomas Built Buses recall: Exterior lighting Oct 1, 2026
- Thomas Built Buses recall: Fuel system, diesel Aug 10, 2026
- Thomas Built Buses recall: Fuel system, diesel Aug 10, 2026
- Thomas Built Buses recall: Exterior lighting Apr 9, 2026
- Thomas Built Buses recall: Engine Feb 24, 2026
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.