{"nhtsa_id":10020436,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2006-10-04","date":"2006-05-01","document_id":"422","mfr_campaign":null,"replaces":"422","component":"SERVICE BRAKES, AIR:SLACK ADJUSTERS:AUTOMATIC","mfr_system":null,"summary":"AUTOMATIC SLACK ADJUSTER ADJUSTMENT CAUTION. MODELS CONSTELLATION AND HERITAGE. WESTERN STAR. *KB","document":null,"url":"https://open.wenmarpro.com/bulletins/10020436","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"5700","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_western-star_5700"]},{"make":"WESTERN STAR","model":"CONSTELLATION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"WESTERN STAR","model":"HERITAGE","year_from":null,"year_to":null,"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":[]}