Tiffin recall: Engine and engine cooling
What is wrong
Tiffin motorhomes is recalling certain model year 2011 allegro bus and phaeton recreational vehicles built on the powerglide chassis equipped with a cummins isx or isl diesel engine. The v-band clamp assembly, part numbers q187684, q187685, and q187686, used to connect the inlet and outlet cone sections to the diesel oxidation catalyst (doc)/diesel particulate filter (dpf) include a t-bolt which can fracture and fail when subjected to stress or load. A fracture or failure of the t-bolt may cause the clamp to loosen and the inlet or outlet sections attached to the doc/dpf housing to disconnect.
What could happen
If the inlet or outlet sections disconnect, hot exhaust gases can vent prior to exiting the tailpipe, creating the risk of combustion and a fire. If both clamps fail, there is a risk in some applications that the doc/dpf housing may detach completely, creating a road hazard.
The fix
Tiffin motorhomes is working with cummins to identify and notify owners of the recall campaign. Repairs will be performed by authorized cummins dealers free of charge. The safety recall began on october 10, 2011. Owners may contact cummins at 1-812-377-5000 or tiffin motorhomes at 1-256-356-8661.
Vehicles covered
- Tiffin Allegro Bus 2011
- Tiffin Phaeton 2011
Facts
- NHTSA recall number
- 11V485000
- Type
- Vehicle
- Filed by
- Tiffin Motorhomes, Inc.
- Reported to NHTSA
- Sep 23, 2011
- Owners notified
- Oct 10, 2011
- Vehicles or items affected
- 179
- Started by
- The manufacturer
- Built
- Sep 1, 2010 to Dec 31, 2010
- Part
- Engine and engine cooling
Notes
Cummins' recall campaign number is c1154.owners may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov .
Other recalls for the same vehicles
- Tiffin recall: Fuel system, diesel Oct 8, 2026
- Tiffin recall: Electrical system Jun 29, 2026
- Tiffin recall: Electrical system Jul 30, 2024
- Tiffin recall: Seats Jan 23, 2024
- Tiffin recall: Equipment Sep 20, 2023
- Tiffin recall: Electrical system Jun 5, 2023
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.