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Service bulletin 22KWB

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10213089
Published by NHTSA2022-06-02
Manufacturer's number22KWB
Manufacturer's date2022-05-10
NHTSA componentSTEERING

NHTSA's summary

Safety Recall – Interim Notification - The Dana D-Series front axle steer arm fasteners that attach the steer arm to the steering knuckle may fail, increasing the risk of a crash or injury. Repair information will be added when a repair procedure and parts are available.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Steering

Vehicles listed
KENWORTH T1702018 to 2020
KENWORTH T2702018 to 2021
KENWORTH T3702018 to 2021
KENWORTH T4402018 to 2021
KENWORTH T4702018 to 2021
KENWORTH T6802018, 2019, 2020, 2021
KENWORTH T8002018 to 2020
KENWORTH T800B2021
KENWORTH T8802018, 2019, 2020, 2021
KENWORTH T880B2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
KENWORTH W9002018 to 2021
KENWORTH W9902018, 2019, 2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20222102022-04-25. Steering
22V2770002022-04-25. STEERING:CRITICAL FASTENERS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A0032020-11-05. Service bulletin. PACCAR has determined that all Set Forward Front Axle (SFFA) models with the PACCAR 20K front steer axle and wide-based tires have the potential to experience a shimmy or shake in the front axle. Wide-based tires include any series tires with widths of 385 mm or higher. This is due a lack of friction in the current axle rotating components. Replacing the thrust roller bearing with a thrust washer assembly creates enough friction to eliminate the shimmy.
R18012019-09-05. Service bulletin. MY2018 QV/VV Retrofit
15-0272019-06-11. Service bulletin. Non Safety Campaign: ZF (supplier) steering gear boxes may have a sealing plug not seated corrected allowing power steering fluid loss.