{"nhtsa_id":631850,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-06-20","date":"2002-06-01","document_id":"1717A","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"SUBJECT ON INSTALLATION THE CHARGE AIR FAN OVERRIDE ON CUMMINS 8.3 GAS ENGINES FOR 30, 65, 40 FT CNG. *SLC","document":null,"url":"https://open.wenmarpro.com/bulletins/631850","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"NEW FLYER","model":"NEW FLYER","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":[]}