{"nhtsa_id":10083023,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-20","date":"2013-07-17","document_id":"FSB 561-023","mfr_campaign":null,"replaces":null,"component":"ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS","mfr_system":null,"summary":"THE INCOMPATIBILITY OF HOSE ID AND COMPRESSOR FITTING SIZE HAS CAUSED THE COMPRESSOR HOSES TO COME LOOSE/BLOW OUT FROM THE AIR COMPRESSOR FITTINGS.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083023","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GU","year_from":2010,"year_to":2014,"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":[]}