| Bulletin Date: | Sep. 1, 2023 |
| Component: | Engine and engine cooling |
| Bulletin Summary: | Certain t680 next gen cummins x15 have fan hub bracket hardware that is under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware. |
| Vehicles covered in this TSB: |
2020 Kenworth T680,
2021 Kenworth T680,
2022 Kenworth T680,
2023 Kenworth T680.
|
| Bulletin Date: | Sep. 1, 2023 |
| Component: | Structure |
| Bulletin Summary: | Replacement fuel bezels are available for t680 next gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose. |
| Vehicles covered in this TSB: |
2020 Kenworth T680,
2021 Kenworth T680,
2022 Kenworth T680,
2023 Kenworth T680.
|
| Bulletin Date: | Nov. 15, 2021 |
| Component: | Cooling system fan |
| Bulletin Summary: | Non-safety campaign ÿ¿ÿ¢ÿ¿ÿ¿ÿ¿ÿ¿ vehicles with a cummins x15 engine and horton fan drive may set diagnostic trouble code (dtc) 6637 and/or 3838 due to fan speed that results in the fan remaining activated until the power is cycl |
| Vehicles covered in this TSB: |
2018 Kenworth T680,
2019 Kenworth T680,
2020 Kenworth T680,
2016 Kenworth T880,
2018 Kenworth T880,
2019 Kenworth T880,
2020 Kenworth T880.
|