Service bulletins for the 2026 Kenworth L770
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
14 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Steering are shown. Show all
| 24KWC/24PBC | 2026-08-20. Service bulletin. STEERING. Updated Sheppard Steering Gear Classification Tool link in Inspection Procedure |
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| 26PACA | 2026-06-03. Service bulletin. STEERING. Updated cross shaft and bearing installation steps have been added to the repair procedures. |
| 26PACA | 2026-02-18. Service campaign. STEERING. KW: Certain Kenworth L770 chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in increased stress on the steering cross shaft on the Right-Hand Stand-Up (RHSU) controls configuration. Failure of the RH steering cross shaft could result in the loss of RH steering control which may increase the risk of a crash. PB: Certain Peterbilt Model 520 / 520 BEV chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in increased stress on the steering cross shaft on the Right-Hand Stand-Up (RHSU) controls configuration. Failure of the RH steering cross shaft could result in the loss of RH steering control which may increase the risk of a crash. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.