Allison Transmission (ATI) is recalling certain models B3400xFE_R and B400R, with part numbers B3400xFE_R and B400R. The transmission yoke may separate, resulting in driveshaft separation and a sudden loss of drive power.
Allison Transmission – Transmission May Separate from Driveshaft
| Report Received Date | 10/11/2023 |
| NHTSA ID | 23E079000 |
| Consequence Summary | A sudden loss of drive power can increase the risk of a crash. Additionally, a disabled bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers. |
| Corrective Action | Dealers will inspect the output yoke bolts, and if necessary, tighten loose output yoke bolts, free of charge. Owner notification letters are expected to be mailed October 27, 2023. Owners may contact ATI customer service at 1-317-242-5000. ATI's number for this recall is 2023FA04. |
| Recall Code | 2023FA04 |
| Potentially Affected | 8498 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=23E079000) |
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