{"nhtsa_id":10029464,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-07-09","date":"2009-03-23","document_id":"SB-3013","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK; SERVICE BRAKES, AIR","mfr_system":null,"summary":"MCI COACH: REAR RELAY VALVE. THE ISSUE INVOLVES LEAKAGE FROM THE SECONDARY RESERVOIR TO (OR THROUGH, IF THE DRAIN COCK IS LEFT OPEN) THE PRIMARY RESERVOIR WHEN A FULL SERVICE BRAKES APPLICATION IS MADE AFTER THE PRIMARY RESERVOIR HAS BEEN DRAINED AS PART OF THE FAILED SYSTEM CHECK,. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10029464","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MCI","model":"J4500","year_from":2000,"year_to":2009,"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":[]}