{"nhtsa_id":10254157,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-05-04","date":"2024-04-10","document_id":"24KWF","mfr_campaign":null,"replaces":null,"component":"STEERING","mfr_system":null,"summary":"Certain Kenworth vehicles from model year 2025 may contain steering gear(s) with a sector shaft that may not meet hardness requirements for the gear teeth due to improper heat treating during assembly. Sector shaft gear teeth with lower than required hardness may prematurely wear, crack, or fracture. A fractured gear tooth may interfere with the gear mechanism leading to binding which in turn may increase the likelihood of a crash. This bulletin will be updated when repair parts and procedures are available.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10254157-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10254157-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10254157","components":[{"id":"steering","name":"Steering","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T280","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_t280"]},{"make":"KENWORTH","model":"T380","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_t380"]},{"make":"KENWORTH","model":"T480","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_t480"]},{"make":"KENWORTH","model":"T680","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_t880"]},{"make":"KENWORTH","model":"W990","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_w990"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}