{"nhtsa_id":10030394,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-09-29","date":"2009-09-28","document_id":"TB-22-12","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:MULTIPLE AXLE","mfr_system":null,"summary":"KENWORTH TRUCK SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A NEW STANDARD AXLE LUBE WOULD BE STANDARD INCHASSIS BEGINNING 9/15/08. THE CHASSIS LISTED WERE MANUFACTURED AFTER THAT DATE BUT WITH THE PREVIOUS STANDARD LUBE. MODELS C500, T600, T800 AND W900. CSC LETTER REC'D. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10030394","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"C500","year_from":2008,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T600","year_from":2008,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T660","year_from":2008,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T800","year_from":2008,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"W900","year_from":2008,"year_to":2008,"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":[]}