{"nhtsa_id":11024956,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-11-05","date":"2025-10-28","document_id":"24KWD","mfr_campaign":"24KWD","replaces":null,"component":"SERVICE BRAKES","mfr_system":null,"summary":"SAFETY RECALL Additional chassis have been included. The chassis list has been updated. Certain T370 / T440 / T470 / T480 / T660 / T680 / T800 / T880 / W900 / C500 chassis may be equipped with air tank reservoirs that have less than twelve times the combined volume of all service brake chambers which fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) No.121, Air Brake Systems.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024956-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024956-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11024956","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"C500","year_from":2017,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T370","year_from":2017,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T440","year_from":2018,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T470","year_from":2017,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T480","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T480","year_from":2022,"year_to":2024,"match":"exact","vehicle_ids":["2022_kenworth_t480","2023_kenworth_t480","2024_kenworth_t480"]},{"make":"KENWORTH","model":"T660","year_from":2017,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T680","year_from":2020,"year_to":2024,"match":"exact","vehicle_ids":["2020_kenworth_t680","2021_kenworth_t680","2022_kenworth_t680","2023_kenworth_t680","2024_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2017,"year_to":2024,"match":"exact","vehicle_ids":["2017_kenworth_t880","2018_kenworth_t880","2019_kenworth_t880","2020_kenworth_t880","2021_kenworth_t880","2022_kenworth_t880","2023_kenworth_t880","2024_kenworth_t880"]},{"make":"KENWORTH","model":"W900","year_from":2017,"year_to":2024,"match":null,"vehicle_ids":[]}],"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":[]}