The defect
DAIMLER TRUCKS IS RECALLING CERTAIN MODEL YEAR 2011- 2012 THOMAS BUILT SAF-T-LINER C2, SAF-T-LINER MVP-EF, AND SAF-T-LINER HDX SCHOOL BUSES MANUFACTURED FROM SEPTEMBER 1, 2010, THROUGH DECEMBER 31, 2010, 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.
The risk
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 remedy
DAIMLER TRUCKS 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 DAIMLER TRUCKS AT 1-800-547-0712.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Thomas Built SAF-T-Liner C2 | 2011 |
| Thomas Built Buses SAF-T-Liner C2 | 2012 |
| Thomas Built Buses SAF-T-Liner HDX | 2011, 2012 |
| Thomas Built Buses SAF-T-Liner MVP-EF | 2011, 2012 |
Components: ENGINE AND ENGINE COOLING
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Thomas Built SAF-T-Liner C2 | 2011 | 0 | 5 |
| Thomas Built Buses SAF-T-Liner C2 | 2012 | 3 | 16 |
| Thomas Built Buses SAF-T-Liner HDX | 2011 | 0 | 23 |
| Thomas Built Buses SAF-T-Liner HDX | 2012 | 0 | 19 |
| Thomas Built Buses SAF-T-Liner MVP-EF | 2011 | 0 | 3 |
| Thomas Built Buses SAF-T-Liner MVP-EF | 2012 | 0 | 3 |
Other engine and engine cooling recalls in 2011
56 of the 597 recall campaigns reported to NHTSA in 2011 concerned the engine and engine cooling; DAIMLER TRUCKS NORTH AMERICA filed 134 campaigns in all.
| 11V605000 27 Dec 2011 | DAIMLER TRUCKS NORTH AMERICA |
| 11V592000 19 Dec 2011 | NISSAN NORTH AMERICA, INC. |
| 11V593000 19 Dec 2011 | AMERICAN SUZUKI MOTOR CORP. |
| 11V583000 8 Dec 2011 | NISSAN NORTH AMERICA, INC. |
| 11V576000 5 Dec 2011 | DAIMLER TRUCKS NORTH AMERICA |
| 11V573000 5 Dec 2011 | DAIMLER TRUCKS NORTH AMERICA |
| 11V570000 1 Dec 2011 | SUTPHEN CORPORATION |
| 11V547000 10 Nov 2011 | TIFFIN MOTORHOMES, INC. |
NHTSA recalls (public domain) · all recalls of 2011