{"nhtsa_id":10081449,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-04","date":"2014-08-27","document_id":"FSB 511-002","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR:DRUM; SERVICE BRAKES, AIR:DRUM:SHOES/LININGS","mfr_system":null,"summary":"Brake Drum, Replacement (Steer Axle) Some MACK CHU, CXU, GU, and TD trucks built between 08/29/2011 and 06/30/2014, equipped with a MACK 14.6k steer axle, unitized hub, and 152 mm (6.0 in) wide Bendix brake shoes can show signs of brake shoe protrusion beyond the brake drum. This condition is resolved by installing new 152 mm (6.0 in) brake shoes, 178 mm (7.0 in) wide brake drums (20536276), new dust shields, and replace the existing Z-Brackets.","document":null,"url":"https://open.wenmarpro.com/bulletins/10081449","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"brake-drum-shoe","name":"Brake drums and shoes","parent":"brakes"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CHU","year_from":2013,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CMH","year_from":2012,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CXU","year_from":2012,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2012,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"TD","year_from":2012,"year_to":2015,"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":[]}