{"nhtsa_id":603713,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-03-03","date":"1998-11-09","document_id":"98224","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC","mfr_system":null,"summary":"A NOISE FROM HYDRO-MAX BRAKE BOOSTER ASSEMBLY- MOTORHOME CHASSIS VEHICLES.","document":null,"url":"https://open.wenmarpro.com/bulletins/603713","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"SUPER DUTY F SERIES","year_from":1999,"year_to":1999,"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":[]}