{"nhtsa_id":602686,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-01-06","date":"1998-10-01","document_id":"TSB980701","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"CONDITIONS WITH HYDRAULIC FAN DRIE SYSTEM MAY NOT REACH FULL FAN SPEED AND PREMATURELY FAIL. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602686","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"SPARTAN","model":"IRIZAR BUS","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":[]}