| Bulletin Date: | Jun. 10, 2022 |
| Component: | Structure |
| Bulletin Summary: | Info only - chassis equipped with a flush mounted battery box between the frame rails, and containing 3 batteries, may experience battery movement on the side where the single battery resides. This bulletin contains a procedure to fabricate |
| Vehicles covered in this TSB: |
2021 Peterbilt 348,
2021 Peterbilt 365,
2022 Peterbilt 365,
2021 Peterbilt 367,
2022 Peterbilt 367,
2021 Peterbilt 389,
2022 Peterbilt 389,
2021 Peterbilt 548,
2022 Peterbilt 548,
2021 Peterbilt 567,
2022 Peterbilt 567,
2021 Peterbilt 579,
2022 Peterbilt 579.
|
| Bulletin Date: | Mar. 31, 2022 |
| Component: | Engine and engine cooling |
| Bulletin Summary: | This bulletin provides information on the epa21 mx fuel injector cleaning procedure and includes suggested fuel system cleaning fluids. This procedure also provides information to determine if it is necessary to replace the fuel injectors. |
| Vehicles covered in this TSB: |
2021 Peterbilt 320,
2021 Peterbilt 520,
2021 Peterbilt 567,
2022 Peterbilt 567,
2021 Peterbilt 579,
2022 Peterbilt 579.
|
| Bulletin Date: | Feb. 4, 2022 |
| Component: | Equipment |
| Bulletin Summary: | The turbo inlet elbow is susceptible to tearing, potentially allowing dust to enter the engine. The turbo inlet elbow will be replaced with an improved part. |
| Vehicles covered in this TSB: |
2020 Peterbilt 567,
2020 Peterbilt 579.
|