{"nhtsa_id":10042749,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-01-09","date":"2011-09-28","document_id":"PIL-553","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH","mfr_system":null,"summary":"MERITOR: THE TRACTOR TRAILER BRAKE CONTROL LINE REMAINS APPLIED AFTER THE FOOT VALVE IS RELEASED. THIS CAN CAUSED INCREASED BREAK WEAR. IN AN UNUSED CAVITY OF THE VALVE, AN INCORRECT ADDITION OF A RUBBER DIAPHRAGM HAS BEEN IDENTIFIED. NO MODELS OR MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10042749","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERITOR WABCO","model":"ABS VALVE PACKAGE","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MERITOR WABCO","model":"AIR BRAKE SYSTEM","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":[]}