{"nhtsa_id":614826,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-12-14","date":"2000-07-13","document_id":"09299","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE","mfr_system":null,"summary":"SUBJECT REGARDING ARTIC JOINT STOP VALVE FIX TO ENSURE PROPER FUNCTION OF THE ARTIC JOINT HYDRAULIC STABILIZATION SYSTEM. WHILE DRIVING, THE STOP VALVE BETWEEN THE PROPORTIONAL VALVE AND ACCUMULATOR MUST REMAIN OPEN AT ALL TIMES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/614826","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"NEOPLAN","model":"JL SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"MG","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"MR","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"OK SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"ON SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"OR SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"NEOPLAN","model":"OT SERIES","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":[]}