{"nhtsa_id":10042748,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-01-09","date":"2011-09-16","document_id":"TIB-16-35","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE FRONT AXLE U BOLTS WERE MANUFACTURED ON CERTAIN T3 AND T4 SERIES TRUCKS WITH INSUFFICIENT TORQUE. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10042748","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T300","year_from":2011,"year_to":2011,"match":"exact","vehicle_ids":["2011_kenworth_t300"]},{"make":"KENWORTH","model":"T370","year_from":2011,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T400","year_from":2011,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T440","year_from":2011,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T470","year_from":2011,"year_to":2012,"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":[]}